Best design pattern for enabling/disabling menu items based on state of things?

TheMSsForum.com: The Microsoft Software Forum

The MSS Forum ‹ Framework
- Archive
  - Biz
  - MCSE
  - CRM
  - Drivers
  - Framework
  - ADO
  - ASP
  - Compact
  - Forms
  - Dotnet
  - C#
  - VB
  - FontpageGen
  - Excel
  - WorkSheet
  - Exchange
  - Setup
  - Fox
  - Fontpage
  - ASP
  - IIS
  - Entourage
  - Money
  - Messanger
  - PocketPC
  - Powerpoint
  - Project
  - Publisher
  - Excel
  - VB
  - Security
  - Portal
  - Services
  - SQLServerDev
  - SVCS
  - SQLServer
  - VB
  - VC
  - MFC
  - ExcelGen

- Previous
 - 1
 - how to fingerprint a user's machine? hello- i need to have a way to accurately 'fingerprint' an end-user's machine. the resulting 'fingerprint' needs to be a simple string-based value. currently, i have created the function listed below that i am using to do this. however, this appears to break down from time to time and i cant determine exactly why. i know that enabling/disable network connections will change the produced value, but is there something else that would change this? perhaps the type of encryption i am using? should i use another one? when i run this function lots of times, it produces the same fingerprint. however, it appears to change later in the future, and i havent been able to detect why because it doesnt change each time i call this function. i am totally open to changing my approach entirely. like i said, i simply need *some* way to accurately identify an end-user's machine (programmatically, of course). can someone please provide me with thoughts and an example that will accomplish this task better? many thanks! ben -------------------- using System; using System.Management; using System.Security.Cryptography; namespace QC.Forensics.Hardware { public class LocalMachine { public static string MachineFingerprint { get { //get the collection of all of the network adapters on the local machine ManagementClass pManagementClass = new ManagementClass("Win32_NetworkAdapterConfiguration"); ManagementObjectCollection pMOColl = pManagementClass.GetInstances(); //build our fingerprint, based on all the MAC addresses for each network card installed on the local machine string sFingerprint = ""; string sCurMACAddress = ""; foreach(ManagementObject pCurMO in pMOColl) { sCurMACAddress = ""; try { sCurMACAddress = pCurMO["MacAddress"].ToString(); } catch { } if (sCurMACAddress != "") { if (sFingerprint == "") sFingerprint = sCurMACAddress; else sFingerprint = sFingerprint + ":" + sCurMACAddress; } } //now hash our value to get our true fingerprint byte[] aInBits = System.Text.ASCIIEncoding.ASCII.GetBytes(sFingerprint); SHA1 pHasher = new SHA1CryptoServiceProvider(); byte[] aOutBits = pHasher.ComputeHash(aInBits); sFingerprint = Convert.ToBase64String(aOutBits); return sFingerprint; } } } } Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 114004
 - 2
 - Basic question about inheritance/hiding methods I have a C# collection class that inherits from SortedList. I want to be able to hide certain methods such as Add. How do I do that? Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 114003
 - 3
 - Implemented interface methods are not available and do not show in Intellisense? I'm creating my own SortedList collection class that implements IDictionary, ICollection, and IEnumerable. The code compiles. I am writing a unit test to exercise it. I can create the object but none of the methods like Add are available. The only thing that shows in Intellisense is: Equals GetHashCode GetType ToString What am I doing wrong?? Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 114001
 - 4
 - VSTS Performance Explorer issues I'm trying to use the VSTS Profiler on a fairly large and complex .NET 2.0 application. In the past, I've always used the Compuware tools (especially the Community Edition of their profiler) and am in general quite familure with application tuning in .Net. The application in question is a Windows Forms EXE with about 25 project (all DLL's) under it, written using C# and a little of bit Managed C++. My test environment is a Windows XP Professional machine and almost everything is being built as "Any Cpu" (and what's not is being targeted at the x86 runtime). When I create new performance session, I add in the "TestHarness" project - this is the Winforms app that drives the DLL. In production this is a Windows Service, but for testing I use the WinForms driver as it's alot easier. ... so I create a performance session, add my TestHarness in, and try to hit "Run". Unfortunatly the "run" button in the performance explorer is greyed out. I've tried every means and mechanism I can think of, but it's always greyed out. I've exited and come back in. I've switched between Instrumentation and Sampling. I've kicked; I've screamed; I've yelled. I've gone through the Wizard. I've done things manually. I offered up a prayer to Bill and Steve. No dice. I can run the application normally - I can set breakpoints, debug, etc. This all works fine. It's just the Profiling infrastructure that seems to be broken. If I create a little sample app, everything works fine. So I know the installation of the profiling infrastructure is correct, and I know the general process I'm using is valid. I'm at my wits end in terms of getting this to work. I had really hoped this would do the trick now that Compuware has stopped offering a free version of their profiler - but so far I'm not not making much headway. -- Chris Mullins Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113999
 - 5
 - Question about generic IEnumerable Visual Studio won't give me the "implement interface option" when I do this: public class Dictionary<K,T> : IEnumerable<KeyValuePair<K,T>> but it does when I do this: public class Dictionary<K,T> : IEnumerable<K> and what is the difference between the right-click menu choices "Implement Interface" and "Implement Interface Explicitly"? They both appear to generate the same code? Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113998
 - 6
 - ANOTHER BIZTALK CONTRACT/ MA OMNI GROUP tgugger@sbcglobal.net 419-537-9447 ANOTHER BIZTALK POSITION/ CONTRACT/ BOSTON AREA We have another BIZTALK contract in the Boston area. This one is for three months. We need a developer who has this experience: This is a mid to senior level Biztalk developer. Need latest version of Biztalk. Need knowledge of Rules Engineering Need knowledge of Activity tracking. If you are interested and QUALIFIED, please answer the seven questions below. Email answers WITH A RESUME to: tgugger@sbcglobal.net. Because resumes continue to change with each new contract, we do not store previously submitted resumes. 1.. BizTalk ------------------------yrs 2.. Latest Biztalk version -------- 3.. Rules engineering exp ? 4.. Activity tracking exp ---------- ? 5.. Citizenship Status ------------ 6.. Availability ------------------------- 7.. Rate (1099 or c to c) -------------pr hr + expenses Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113991
 - 7
 - Serious bug in .NET framework 2.0 - IShellLink interface crashes This is a multi-part message in MIME format. --------------080507040709070501060408 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 8bit *Hello* I wrote an application which runs perfect under .NET framework 1.1. I was very disappointed, that a LOT of things do NOT work on *Framework 2.0*. This framework is NOT downward compatible. For one of the problems I could not yet find a solution or not even an explanation: My project loads a managed C++ DLL which uses the *IShellLink* interface to resolve shortcuts. The function ResolveShortCut() (see below) is called from the main C# program in a thread loop to resolve all links found on the desktop. This works perfect on .NET framework 1.1 But on Framework 2.0 the behaviour is really strange and always different: 1.) Sometimes the function ResolveShortCut() (see below) works 10 or even 100 times without problems. 2.) Then suddenly it happens that *CoInitialize(0)* fails. 3.) Another time *CoCreateInstance(CLSID_ShellLink, ...)* fails. 4.) The next time at the point *i_ShLink->GetPath(...)* a crash appears which cannot even be caught by a try catch block (neither in managed C++ nor in the calling C# code !!) _*Types of Crashes*_: 1.) Sometimes the whole application crashes without any error message. (the application silently disappears from the screen) 2.) Another time I get a window which asks me to send the crash information to Microsoft 3.) Another time I get an error telling me something about "out of memory". (which is nonsense) ___________________________________________________________________ _*Environment:*_ The problem appears on Windows 2000 and 2003. I use Visual Studio 2003. The *STRANGEST* thing is that this problem appears in the following cases: 1.) The ONLY ever installed framework = 1.1 --> everything OK 2.) framework 1.1 + 2.0 installed --> crashes *although* my application loads the assemblies (mscoree.dll etc..) of framework 1.1 !! 3.) framework 2.0 *UNINSTALLED* and only framework 1.1 installed --> crashes. It is impossible to completely UNINSTALL framework 2.0 ! I saved the registry HKLM into a *.REG file, installed framework 2.0 then uninstalled it and compared the registry with the saved file: The result is shocking: *hundreds of entries in the Registry* and a dozen of files are NOT removed !! _*Conclusion: *_If you ever installed framework 2.0 the computer is ruined. It is impossible to completely remove framework 2.0. My application still crashes even after framework 2.0 was uninstalled !!!!! I have to install a fresh Windows to get it running again !!!! I tried this on two different computers running Windows 2000 and 2003. I can 100% reproduce this ! Additionally another function, which *CREATES *shortcuts also crashes sometimes. I did not yet test, which other functions using COM are also affected. Is this a known problem ? What can I do ? Thanks in advance for any answer. *Elmü* ____________________________________________________________________ Here is the code from my managed C++ DLL. Please don't tell me that there is any bug in this code ! It runs PERFECTLY on framework 1.1 since years. // this line may fail hr = CoInitialize(0) called in the contructor. hr = CoUninitialize(0) called in the destructor. bool Utils::ResolveShortCut(String *ps_LNKfile, // IN: the link file to resolve String **pps_Path, // OUT: the target file String **pps_CmdLine) // OUT: the command line params (if any) { bool b_Ret = false; IShellLink* i_ShLink; IPersistFile* i_Persist; WIN32_FIND_DATA k_Find; WORD *u16_LNKfile = (WORD*)Marshal::StringToHGlobalUni(ps_LNKfile).ToPointer(); // this line may fail HRESULT hr = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink, (void**)&i_ShLink); if (SUCCEEDED(hr)) { hr = i_ShLink->QueryInterface(IID_IPersistFile, (void**)&i_Persist); if (SUCCEEDED(hr)) { hr = i_Persist->Load(u16_LNKfile, STGM_READ); if (SUCCEEDED(hr)) { hr = i_ShLink->Resolve(0, SLR_NO_UI | SLR_NOSEARCH | SLR_NOTRACK | SLR_NOUPDATE | SLR_NOLINKINFO); if (SUCCEEDED(hr)) { char s8_Buf[MAX_PATH]; s8_Buf[0] = 0; // this line may completely crash the whole application! (but only sometimes) hr = i_ShLink->GetPath(s8_Buf, MAX_PATH, &k_Find, SLGP_SHORTPATH); if (SUCCEEDED(hr)) { b_Ret = true; *pps_Path = new String(s8_Buf); } s8_Buf[0] = 0; hr = i_ShLink->GetArguments(s8_Buf, MAX_PATH); if (SUCCEEDED(hr)) { *pps_CmdLine = new String(s8_Buf); } } } i_Persist->Release(); } i_ShLink->Release(); } Marshal::FreeHGlobal(u16_LNKfile); return b_Ret; } --------------080507040709070501060408 Content-Type: text/html; charset=ISO-8859-15 Content-Transfer-Encoding: 8bit <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-15" http-equiv="Content-Type"> <title></title> </head> <body bgcolor="#ffffff" text="#000000"> Hello I wrote an application which runs perfect under .NET framework 1.1. I was very disappointed, that a LOT of things do NOT work on Framework 2.0. This framework is NOT downward compatible. For one of the problems I could not yet find a solution or not even an explanation: My project loads a managed C++ DLL which uses the IShellLink interface to resolve shortcuts. The function ResolveShortCut() (see below) is called from the main C# program in a thread loop to resolve all links found on the desktop. This works perfect on .NET framework 1.1 But on Framework 2.0 the behaviour is really strange and always different: 1.) Sometimes the function ResolveShortCut() (see below) works 10 or even 100 times without problems. 2.) Then suddenly it happens that CoInitialize(0) fails. 3.) Another time CoCreateInstance(CLSID_ShellLink, ...) fails. 4.) The next time at the point i_ShLink->GetPath(...) a crash appears which cannot even be caught by a try catch block (neither in managed C++ nor in the calling C# code !!) Types of Crashes: 1.) Sometimes the whole application crashes without any error message. (the application silently disappears from the screen) 2.) Another time I get a window which asks me to send the crash information to Microsoft 3.) Another time I get an error telling me something about "out of memory". (which is nonsense) ___________________________________________________________________ <big>Environment:</big> The problem appears on Windows 2000 and 2003. I use Visual Studio 2003. The STRANGEST thing is that this problem appears in the following cases: 1.) The ONLY ever installed framework = 1.1 --> everything OK 2.) framework 1.1 + 2.0 installed --> crashes although my application loads the assemblies (mscoree.dll etc..) of framework 1.1 !! 3.) framework 2.0 UNINSTALLED and only framework 1.1 installed --> crashes. It is impossible to completely UNINSTALL framework 2.0 ! I saved the registry HKLM into a *.REG file, installed framework 2.0 then uninstalled it and compared the registry with the saved file: The result is shocking: hundreds of entries in the Registry and a dozen of files are NOT removed !! Conclusion: If you ever installed framework 2.0 the computer is ruined. It is impossible to completely remove framework 2.0. My application still crashes even after framework 2.0 was uninstalled !!!!! I have to install a fresh Windows to get it running again !!!! I tried this on two different computers running Windows 2000 and 2003. I can 100% reproduce this ! Additionally another function, which CREATES shortcuts also crashes sometimes. I did not yet test, which other functions using COM are also affected. Is this a known problem ? What can I do ? Thanks in advance for any answer. Elmü ____________________________________________________________________ Here is the code from my managed C++ DLL. Please don't tell me that there is any bug in this code ! It runs PERFECTLY on framework 1.1 since years. <tt>// this line may fail hr = CoInitialize(0) called in the contructor. hr = CoUninitialize(0) called in the destructor. </tt> <tt>bool Utils::ResolveShortCut(String *ps_LNKfile, // IN: the link file to resolve String **pps_Path, // OUT: the target file String **pps_CmdLine) // OUT: the command line params (if any) { bool b_Ret = false; IShellLink* i_ShLink; IPersistFile* i_Persist; WIN32_FIND_DATA k_Find; WORD *u16_LNKfile = (WORD*)Marshal::StringToHGlobalUni(ps_LNKfile).ToPointer(); // this line may fail HRESULT hr = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink, (void**)&i_ShLink); if (SUCCEEDED(hr)) { hr = i_ShLink->QueryInterface(IID_IPersistFile, (void**)&i_Persist); if (SUCCEEDED(hr)) { hr = i_Persist->Load(u16_LNKfile, STGM_READ); if (SUCCEEDED(hr)) { hr = i_ShLink->Resolve(0, SLR_NO_UI | SLR_NOSEARCH | SLR_NOTRACK | SLR_NOUPDATE | SLR_NOLINKINFO); if (SUCCEEDED(hr)) { char s8_Buf[MAX_PATH]; s8_Buf[0] = 0; // this line may completely crash the whole application! (but only sometimes) hr = i_ShLink->GetPath(s8_Buf, MAX_PATH, &k_Find, SLGP_SHORTPATH); if (SUCCEEDED(hr)) { b_Ret = true; *pps_Path = new String(s8_Buf); } s8_Buf[0] = 0; hr = i_ShLink->GetArguments(s8_Buf, MAX_PATH); if (SUCCEEDED(hr)) { *pps_CmdLine = new String(s8_Buf); } } } i_Persist->Release(); } i_ShLink->Release(); } Marshal::FreeHGlobal(u16_LNKfile); return b_Ret; } </tt> </body> </html> --------------080507040709070501060408-- Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113983
 - 8
 - migration from asp: better client or server-side code? Hi, I made an application in classic asp (reservation of books and video stuffs for students) and want to migrate to asp.net. The user has to chose a date, then pushung on a submit button. The whole day is then displayed in cels of a table. The user has then to click in a cel representing a hour of the day and an object (book ..), and finally click on the submit button to insert that reservation in the database. My problem is: there is a lot of javascript client-side code. All onclick events are executed on client-side. Have i to change this into server-side code or i can still use that client-side code? Is it true that the filosophy of asp.net is: maximum server-side script and minimum client-side? If so, is there no danger to overload the server, instead of sharing the execution of the application between client and server? Thanks for help Ben Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113982
 - 9
 - .Net 2 backgrounder I am looking for pointers on creating a .Net 2.0 Win app that can change the wallpaper of a windows machine. Namely, how to change the wallpaper. Thanks. Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113980
 - 10
 - Dynamic Method's Body and IL ??? Hi I am using C# 2.0. I need to use the MethodBuilder.CreateMethodBody that takes byte[] as the input parameter taking the IL codes as byte array. I feed this input from MethodBody.GetILAsByteArray. But when the method created dynamically via MethodBuilder.CreateMethodBody is invoked by TypeBuilder.Invoke, it throws exception [inner exception] "Bad Method Token". If the body of the method [which is requested as IL by the MethodBody.GetILAsByteArray] is empty, then the method executes successfully. Is there any special that has to be done with the byte [] from MethodBody.GetILAsByteArray before giving it as input to the MethodBuilder.CreateBody. I could not find enough information even on the MSDN documentation about this. Your help is appreciated. Thanks Vivek Ragunathan Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113978
 - 11
 - RemoveDirecoty Is there an example of the use of the 2.0 FTP RemoveDirectory ... anywhere? -- -- Thom Little -- www.tlanet.net -- Thom Little Associates, Ltd. -- Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113974
 - 12
 - Error adding to the OleDbParameterCollection object Thanks for any thoughts on this I receive the following error when I run the code snippet below: An OleDbParameter with ParameterName 'CateroryID_New' is not contained by this OleDbParameterCollection. Private Function CreateUpdateCommand() As System.Data.OleDb.OleDbCommand Dim StrSQL As String Dim connectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0; Ole DB Services=-4; Data Source=C:\Program File"& _ "s\Microsoft.NET\SDK\v2.0\QuickStart\aspnet\samples\data\App_Data\Northwind.mdb" Dim dbConnection As System.Data.IDbConnection = New System.Data.OleDb.OleDbConnection(connectionString) strSQL = "UPDATE [Categories] SET CategoryName=?, Description=? WHERE CategoryID=?" Dim cmd As New System.Data.OleDb.OleDbCommand (strSQL, dbConnection) Dim pc As System.Data.OleDb.OleDbParameterCollection = cmd.Parameters pc.Add("CategoryID_New", System.Data.OleDb.OleDbType.Integer) pc.Add("CategoryName_New", System.Data.OleDb.OleDbType.BSTR) pc.Add("Description_New", System.Data.OleDb.OleDbType.BSTR) pc.Add("CategoryID_Orig", System.Data.OleDb.OleDbType.Integer) pc.Add("CategoryName_Orig", System.Data.OleDb.OleDbType.BSTR) pc.Add("Description_Orig", System.Data.OleDb.OleDbType.BSTR) Return cmd End Function Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113968
 - 13
 - Update function created using Web Matrix Code Wizard fails Hello, I am using the Web Matrix Code Wizard's Update feature. I have a very simple user interface that has two textboxes. One is for a Name and the other is for a Description. I also have a dropdown listbox. I am working with the Northwind database attempting to update the Category table. The dropdown listbox is populated with the categoryID and the two textboxes are for the CategoryName and CategoryDescription fields. I have data successfully populating the textboxes and when I select a new categoryID in the dropdown listbox, the data in the textboxes changes accordingly. My problem is updating the database. Below I have a function that was created using the Update Code Wizard. I also have an event subroutine that fires when I click the Save button which calls the MyUpdateMethod function. Not sure why, but when I make changes to the textboxes and click save, the changes do not stick. I select a different ID and then select the ID that I made changes to but the changes are not there. I am running on my localhost Web Matrix Server. To view a MSDN walkthrough of a similar exercise go to http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcon/html/vbwlkwalkthroughupdatingdatausingdatabaseupdatequeryinwebforms.asp Any ideas would be greatly appreciated. Function MyUpdateMethod(ByVal categoryID As Integer, ByVal categoryName As String, ByVal description As String) As Integer Dim connectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0; Ole DB Services=-4; Data Source=C:\Northwind.mdb" Dim dbConnection As System.Data.IDbConnection = New System.Data.OleDb.OleDbConnection(connectionString) Dim queryString As String = "UPDATE [Categories] SET [CategoryID]=@CategoryID, [CategoryName]=@CategoryName, [Description]=@Description WHERE ([Categories].[CategoryID] = @CategoryID)" Dim dbCommand As System.Data.IDbCommand = New System.Data.OleDb.OleDbCommand dbCommand.CommandText = queryString dbCommand.Connection = dbConnection Dim dbParam_categoryID As System.Data.IDataParameter = New System.Data.OleDb.OleDbParameter dbParam_categoryID.ParameterName = "@CategoryID" dbParam_categoryID.Value = categoryID dbParam_categoryID.DbType = System.Data.DbType.Int32 dbCommand.Parameters.Add(dbParam_categoryID) Dim dbParam_categoryName As System.Data.IDataParameter = New System.Data.OleDb.OleDbParameter dbParam_categoryName.ParameterName = "@CategoryName" dbParam_categoryName.Value = categoryName dbParam_categoryName.DbType = System.Data.DbType.String dbCommand.Parameters.Add(dbParam_categoryName) Dim dbParam_description As System.Data.IDataParameter = New System.Data.OleDb.OleDbParameter dbParam_description.ParameterName = "@Description" dbParam_description.Value = description dbParam_description.DbType = System.Data.DbType.String dbCommand.Parameters.Add(dbParam_description) Dim rowsAffected As Integer = 0 dbConnection.Open Try rowsAffected = dbCommand.ExecuteNonQuery Finally dbConnection.Close End Try Return rowsAffected End Function ' ddlCategoryID is the dropdown listbox ID, txtCategoryName and txtCategoryDescription are textbox ID's Sub btnSave_Click(sender As Object, e As EventArgs) MyUpdateMethod(ddlCategoryID.SelectedIndex, txtCategoryName.Text, txtCategoryDescription.Text) End Sub Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113967
 - 14
 - 2.0 Recompile I am posting code into the app_Code directory, which doesn't seem to force a recompile. How can I force a recompile? -- Arne Garvander Certified Geek Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113966
 - 15
 - DataViewRowState returning bogus value ?? In an attempt to update an Access database, I have DataViewRowState returning a value of 28 which is not in the properies list of values. Here is a code snippet: Dim cmdUpdate As System.Data.OleDb.OleDbCommand = CreateUpdateCommand() Dim row As System.Data.DataRow Dim intRowsAffected As Integer Dim dvrs As System.Data.DataViewRowState dvrs = System.Data.DataViewRowState.ModifiedCurrent Or System.Data.DataViewRowState.Deleted Or System.Data.DataViewRowState.Added msgbox(dvrs) For Each row In tbl.Select ("", "", dvrs) msgbox("in the for loop") I never make it inside the For loop... Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113965
 - 16
 - Uploading Files I'm trying to figure out a way for a user to be able to select a file name (on their local hard drive) and upload it to a web server. That's the easy part...and I use a standard Input tag with a type=file. What I would like to do is also upload a couple of other files automatically. For example, the users choose c:\myfile.txt. I would also want to upload c:\myfile.gif and c:\myfile.jpg. I would assume this is impossible to do, for security reasons....unless I wrote and activex component to do it...? Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113963
 - 17
 - Updating access database Thanks in advance for any help. I am using code that is directly from David Sceppa's book from MS Press titled "ADO.NET". I have walked completely though the code and I find values are what they should be until I reach the following subroutine. Private Sub SubmitChangesByHand() Dim cmdUpdate As System.Data.OleDb.OleDbCommand = CreateUpdateCommand() Dim row As System.Data.DataRow Dim intRowsAffected As Integer Dim dvrs As System.Data.DataViewRowState dvrs = System.Data.DataViewRowState.ModifiedCurrent Or System.Data.DataViewRowState.Deleted Or System.Data.DataViewRowState.Added For Each row In tbl.Select ("", "", dvrs) msgbox("in the for loop") intRowsAffected = SubmitUpdate(row, cmdUpdate) msgbox(intRowsAffected) if intRowsAffected = 1 then row.AcceptChanges() else row.RowError = "Update attempt failed" End If Next row End Sub For some reason I am not getting inside the For loop. Only thing I can see is that the DataViewRowState is returning a value of 28 which should be 16 (for updating a database). I invoke the function by a button click event elsewhere in the code. Other than that, the table has records in it which is declared elsewhere as: Dim tbl As New System.Data.DataTable("categories") I am using the Northwind database in my trial efforts. Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113962
 - 18
 - Help with dsoFramer Has anyone had a chance to get the dsoFramer sample code from MSFT to work in DOT.NET VB? If so, could you please share your code with me. I just need to open an OFFICE document and view it; nothing else. TIA John Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113960
 - 19
 - Good introductory C++ .NET book, preferably for VS.NET 2005 (or 2003) Anyone have good suggestions? I have loads of experience with C# and VB.NET, but would like to make the transition to C++. Thanks! Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113955
 - 20
 - Assembly Version In the 1.1 framework the assemly Version would optionally auto-increment. In the 2.0 framework the auto increment seems to be only available on one-touch deployment. How can I put auto-increment back on a non-one-touch assembly? (I am written a windows service) -- Arne Garvander Certified Geek Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113954
 - 21
 - Slow loading of file icons Hello I've got a problem with loading file icons to TreeView. I'm diplaying only some directories in TreeView (~50 files total), but it's taking a long time to add them. Loading is done by [DllImport("Shell32.dll")]...SHGetFileInfo(...) and it's fast enough, but then doing ImageList.Add(...) is taking up to a couple of seconds for ~20 icons, which is really bad. Is there any way to help it? (no delayed loading on expand event and this kind of stuff, please - it's only about adding (string, Icon) to ImageList). Writing in c#... Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113952
 - 22
 - CounterSample & nextSample I need to produce the 5 minute average CPU utilization for a system (the average utilization over a 5 minute period). I found the below article that seems to do a reasonably complete job of explaining the differences between raw, calculated and sampled performance data. http://msdn2.microsoft.com/en-us/library/xb29hack.aspx CPU utilization is of type Timer100NsInverse. So here is my question: to get the most accurate 5 minute average of CPU utilization, should I be taking a sample at 0 minutes, another sample at 5 minutes, and then calculate the results (see below code for an example)? Advice would be appreciated. Thanks in advance. Joe // 1st sample counter = new PerformanceCounter("Processor", "% Processor Time", "_Total", "192.168.130.9"); sample1 = counter.NextSample(); counter.Close(); Thread.Sleep(5*60*1000); // 2nd sample counter = new PerformanceCounter("Processor", "% Processor Time", "_Total", "192.168.130.9"); sample2 = counter.NextSample(); counter.Close(); // Output results Console.WriteLine("CPU util = " + CounterSample.Calculate(sample1, sample2)); Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113949
 - 23
 - My Project/Settings.settings Hi In a Windows project you have a folder called 'My Project' with a Settings.settings file. However you don't have the same option for a Web project...how come? and how do you do something similar for a web project??? TIA Søren Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113947
 - 24
 - Equivalent to VCL's DataModule In Borland's VCL ( Visual Component Library ), one can use a DataModule into which one can drop non-visual components from the RAD designer. The DataModule is a design-time visual container for non-GUI components, which is never seen visually at run-time as a GUI control. An application or Dll can have any number of datamodules in it, each with its own name. One can also manually add any non-GUI data to any particular DataModule. For an application at run-time, datamodule instances for each visual datamodule are automatically created just like forms, while for a Dll at run-time it is the programmer's responsibility to create datamodule instances for each visual datamodule created at design time. I have found the ability to use datamodules as visual containers to non-GUI components in an application or Dll to be very useful. Admittedly a datamodule is nothing more than a class which contains instances of non-GUI components and possibly other non-GUI fields, but I like the ability to manipulate it at design time, and as a means of separating the data portion of an application or Dll from the GUI portion. Does .NET have any equivalent to this idea, so that non-visual components can be created at design time without having to drop such a component on a Windows or Web form. ? Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113946
 - 25
 - UTF8 to UTF16 ? I'm somewhat confused about Unicode but up until now I havent really seen much issues with using it up until recently. We recently started using an SMS gateway that requires a unicode message to be sent as a hexadecimal string where each byte code has been replaced with their hexadecimal value, for example: 043104AF0442044D044... This string according to their documentation must be in UTF-16 before conversion to the hexadecimal form, we however are using UTF-8 on our website and all the texts are entered as UTF-8. When I try to send a unicode formatted message using content from our website it shows some characters correctly but not all of them, I cannot see another reason for this than the fact that we are using UTF-8 and they require it to be in UTF-16. Now to the questions: 1. How do I convert between UTF-8 and UTF-16 ? I was looking at the Decoder, Encoder classes but it doesn't really provide a direct way to convert between encodings that I could see. 2. Since all strings are actually UTF-16 in .NET does this mean that the conversion already has been made or does it mean it is actually storing UTF-8 encoded bytes into a UTF-16 string ? Thank you PL. Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113945
- Next
 - 1
 - Additional component to web service I post here is because there is no one answer my question(10 days ago) in "web service" news group. I am going to implement a program on the web service side. The program will work with the web services so that it can do some check on the data before invoking any web method. The program will do some general checks, and does not know exactly what kinds of web methods behind. I think I could write a dll, then let the web services to call this dll first before the web methods are invoked. But I do not how to do exactly. Is there any way to integrate the program into the web services? Please give me a guide in details. Thanks. Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113944
 - 2
 - help: simple csc works in 1.1 but not 2.0 framework I'm pulling my hair out! Is this a bug?? Scenario - boiled down as simple as I can make it. 1. Created 2.0 console app. 2. Added reference: (COM tab) "Microsoft CDO for Windows 2000 Library" ---- This adds CDO and ADODB references to the project 3. Added a few lines of code (see below) 4. Compiles just fine from VS 2005. (puts Interop.CDO.dll and interop.ADODB.dll in debug dir. 5. If I copy the code and the Interop.CDO.dll and interop.ADODB.dll to a single directory and run csc on it, framework 1.1 csc compiles fine, 2.0 csc gives errors acting like the ref is not there. Code ------------------------ using CDO; using ADODB; public class XXXX { static void Main() { CDO.Message cdoMessage = new CDO.MessageClass(); CDO.Configuration configuration = new CDO.ConfigurationClass(); configuration = cdoMessage.Configuration; ADODB.Fields fields = configuration.Fields; } } ERROR from CSC ------------------------- Microsoft (R) Visual C# 2005 Compiler version 8.00.50727.42 for Microsoft (R) Windows (R) 2005 Framework version 2.0.50727 Copyright (C) Microsoft Corporation 2001-2005. All rights reserved. Mailer.cs(23,7): error CS0012: The type 'ADODB.Fields' is defined in an assembly that is not referenced. You must add a reference to assembly 'ADODB, Version=7.0.3300.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. Interop.CDO.dll: (Location of symbol related to previous error) Mailer.cs(23,29): error CS0266: Cannot implicitly convert type 'ADODB.Fields []' to 'ADODB.Fields [z:\test\Interop.ADODB.dll]'. An explicit conversion exists (are you missing a cast?) -------------------------------- Any kind sole have an idea on what the issue is or how I can fix it????????????????? All advice appreciated. Thanks. Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113937
 - 3
 - Help with event response in threadpool. I am using a controls, webbrowser, in threadpool. every thread has its own webbrowser object. at the same time, i must response for the event DocumentComplete, i don't know whether the event should be fired when the thread method returned? How to realize this? Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113934
 - 4
 - how to interpret Number property in System.Data.SqlClient.SqlError Environment: .NET 1.1, SQL 2000, VS.NET 2003. We have some logic in an application to perform some recovery operation on the client side based on the SQL error code returned from System.Data.SqlClient.SqlError. It seems to me that the Number property in System.Data.SqlClient.SqlError is a perfect fit. According to the manual page, The Number property in System.Data.SqlClient.SqlError corresponds to an entry in the master.dbo.sysmessages table. I managed to get some numbers not listed in the master.dbo.sysmessages table: 11 (General network error. Check your network documentation), and 17 (SQL Server does not exist or access denied). It is reasonable that these network related errors do not appear in the master.dbo.sysmessages table. However, I was wondering, in addition to 11 and 17, what are other possible error code (returned by Number property in System.Data.SqlClient.SqlError) not listed in master.dbo.sysmessages table??? I remember that ODBC (in unmanaged C/C++ code) has very detailed description for EACH error code and sql state, and people always suggest that we use System.Data.SqlClient instead of System.Data.Odbc. I already tried MSDN as well as google various places without luck. Or is there any other way to do what I wish to do? Any hints/suggestions are appreciated. Thanks. Kong Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113929
 - 5
 - Remoting a collection class? I want to create a collection class (List or SortedList, etc) that is remotable (inherits MarshalByRefObject). Because C# doesn't support multiple class inheritance I can't just do this: public class Groups : List, MarshalByRefObject I know I can implement all of the collection interfaces myself but what a hassle. Is there a simpler way? Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113926
 - 6
 - .NET 2.0 client / Axis 1.3 Server problem with java.lang.Integer Axis 1.3 on server / .NET 2.0 client (Visual Studio 2005 - using Add Web Reference) I have a class that contains a java.lang.String and a java.lang.Integer. The client consumes the string fine but the Integer value is always delivered as a null. Any suggestions? Method in question is getApplication() <?xml version="1.0" encoding="UTF-8" ?> - <wsdl:definitions targetNamespace="urn:ProvisionService" xmlns:apachesoap="http://xml.apache.org/xml-soap" xmlns:impl="urn:ProvisionService" xmlns:intf="urn:ProvisionService" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tns1="urn:ProvisionServiceBean_System" xmlns:tns2="urn:ProvisionServiceFault" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> -  - <wsdl:types> - <schema targetNamespace="urn:ProvisionServiceBean_System" xmlns="http://www.w3.org/2001/XMLSchema"> <import namespace="urn:ProvisionService" /> <import namespace="urn:ProvisionServiceFault" /> <import namespace="http://schemas.xmlsoap.org/soap/encoding/" /> - <complexType name="Application"> - <sequence> <element name="desc" nillable="true" type="xsd:string" /> <element name="id" nillable="true" type="xsd:int" /> </sequence> </complexType> - <complexType name="DispServer"> - <sequence> <element name="deleted" nillable="true" type="xsd:int" /> <element name="id" nillable="true" type="xsd:int" /> <element name="machineName" nillable="true" type="xsd:string" /> <element name="serverName" nillable="true" type="xsd:string" /> <element name="siteId" nillable="true" type="xsd:int" /> </sequence> </complexType> </schema> - <schema targetNamespace="urn:ProvisionServiceFault" xmlns="http://www.w3.org/2001/XMLSchema"> <import namespace="urn:ProvisionService" /> <import namespace="urn:ProvisionServiceBean_System" /> <import namespace="http://schemas.xmlsoap.org/soap/encoding/" /> - <complexType name="FaultCause"> - <sequence> <element name="code" type="xsd:int" /> <element name="message" nillable="true" type="xsd:string" /> </sequence> </complexType> - <complexType name="ProvisionFault"> - <sequence> <element name="faultCause" nillable="true" type="tns2:FaultCause" /> <element name="message" nillable="true" type="xsd:string" /> </sequence> </complexType> </schema> - <schema targetNamespace="urn:ProvisionService" xmlns="http://www.w3.org/2001/XMLSchema"> <import namespace="urn:ProvisionServiceBean_System" /> <import namespace="urn:ProvisionServiceFault" /> <import namespace="http://schemas.xmlsoap.org/soap/encoding/" /> - <complexType name="ArrayOf_tns1_DispServer"> - <complexContent> - <restriction base="soapenc:Array"> <attribute ref="soapenc:arrayType" wsdl:arrayType="tns1:DispServer[]" /> </restriction> </complexContent> </complexType> </schema> </wsdl:types> - <wsdl:message name="getApplicationRequest"> <wsdl:part name="o" type="tns1:Application" /> </wsdl:message> <wsdl:message name="getServersRequest" /> - <wsdl:message name="getBeanResponse"> <wsdl:part name="getBeanReturn" type="xsd:anyType" /> </wsdl:message> - <wsdl:message name="getBeanRequest"> <wsdl:part name="o" type="xsd:anyType" /> </wsdl:message> - <wsdl:message name="ProvisionFault"> <wsdl:part name="fault" type="tns2:ProvisionFault" /> </wsdl:message> - <wsdl:message name="getServersResponse"> <wsdl:part name="getServersReturn" type="impl:ArrayOf_tns1_DispServer" /> </wsdl:message> - <wsdl:message name="getApplicationResponse"> <wsdl:part name="getApplicationReturn" type="tns1:Application" /> </wsdl:message> - <wsdl:portType name="ProvisioningService"> - <wsdl:operation name="getApplication" parameterOrder="o"> <wsdl:input message="impl:getApplicationRequest" name="getApplicationRequest" /> <wsdl:output message="impl:getApplicationResponse" name="getApplicationResponse" /> <wsdl:fault message="impl:ProvisionFault" name="ProvisionFault" /> </wsdl:operation> - <wsdl:operation name="getBean" parameterOrder="o"> <wsdl:input message="impl:getBeanRequest" name="getBeanRequest" /> <wsdl:output message="impl:getBeanResponse" name="getBeanResponse" /> <wsdl:fault message="impl:ProvisionFault" name="ProvisionFault" /> </wsdl:operation> - <wsdl:operation name="getServers"> <wsdl:input message="impl:getServersRequest" name="getServersRequest" /> <wsdl:output message="impl:getServersResponse" name="getServersResponse" /> <wsdl:fault message="impl:ProvisionFault" name="ProvisionFault" /> </wsdl:operation> </wsdl:portType> - <wsdl:binding name="ProvisionServiceSoapBinding" type="impl:ProvisioningService"> <wsdlsoap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http" /> - <wsdl:operation name="getApplication"> <wsdlsoap:operation soapAction="" /> - <wsdl:input name="getApplicationRequest"> <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="urn:ProvisionService" use="encoded" /> </wsdl:input> - <wsdl:output name="getApplicationResponse"> <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="urn:ProvisionService" use="encoded" /> </wsdl:output> - <wsdl:fault name="ProvisionFault"> <wsdlsoap:fault encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" name="ProvisionFault" namespace="urn:ProvisionService" use="encoded" /> </wsdl:fault> </wsdl:operation> - <wsdl:operation name="getBean"> <wsdlsoap:operation soapAction="" /> - <wsdl:input name="getBeanRequest"> <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="urn:ProvisionService" use="encoded" /> </wsdl:input> - <wsdl:output name="getBeanResponse"> <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="urn:ProvisionService" use="encoded" /> </wsdl:output> - <wsdl:fault name="ProvisionFault"> <wsdlsoap:fault encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" name="ProvisionFault" namespace="urn:ProvisionService" use="encoded" /> </wsdl:fault> </wsdl:operation> - <wsdl:operation name="getServers"> <wsdlsoap:operation soapAction="" /> - <wsdl:input name="getServersRequest"> <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="urn:ProvisionService" use="encoded" /> </wsdl:input> - <wsdl:output name="getServersResponse"> <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="urn:ProvisionService" use="encoded" /> </wsdl:output> - <wsdl:fault name="ProvisionFault"> <wsdlsoap:fault encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" name="ProvisionFault" namespace="urn:ProvisionService" use="encoded" /> </wsdl:fault> </wsdl:operation> </wsdl:binding> - <wsdl:service name="ProvisioningServiceService"> - <wsdl:port binding="impl:ProvisionServiceSoapBinding" name="ProvisionService"> <wsdlsoap:address location="http://192.168.20.129:8080/ProvisionService/services/ProvisionService" /> </wsdl:port> </wsdl:service> </wsdl:definitions> ===================== proxy.cs file //------------------------------------------------------------------------------ // <auto-generated> // This code was generated by a tool. // Runtime Version:2.0.50727.42 // // Changes to this file may cause incorrect behavior and will be lost if // the code is regenerated. // </auto-generated> //------------------------------------------------------------------------------ // // This source code was auto-generated by Microsoft.VSDesigner, Version 2.0.50727.42. // #pragma warning disable 1591 namespace ConsoleApplication1.Aaron { using System.Diagnostics; using System.Web.Services; using System.ComponentModel; using System.Web.Services.Protocols; using System; using System.Xml.Serialization; /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Web.Services", "2.0.50727.42")] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Web.Services.WebServiceBindingAttribute(Name="ProvisionServiceSoapBinding", Namespace="urn:ProvisionService")] [System.Xml.Serialization.SoapIncludeAttribute(typeof(ProvisionFault))] [System.Xml.Serialization.SoapIncludeAttribute(typeof(DispServer))] public partial class ProvisioningServiceService : System.Web.Services.Protocols.SoapHttpClientProtocol { private System.Threading.SendOrPostCallback getApplicationOperationCompleted; private System.Threading.SendOrPostCallback getBeanOperationCompleted; private System.Threading.SendOrPostCallback getServersOperationCompleted; private bool useDefaultCredentialsSetExplicitly; /// <remarks/> public ProvisioningServiceService() { this.Url = global::ConsoleApplication1.Properties.Settings.Default.ConsoleApplication1_Aaron_ProvisioningServiceService; if ((this.IsLocalFileSystemWebService(this.Url) == true)) { this.UseDefaultCredentials = true; this.useDefaultCredentialsSetExplicitly = false; } else { this.useDefaultCredentialsSetExplicitly = true; } } public new string Url { get { return base.Url; } set { if ((((this.IsLocalFileSystemWebService(base.Url) == true) && (this.useDefaultCredentialsSetExplicitly == false)) && (this.IsLocalFileSystemWebService(value) == false))) { base.UseDefaultCredentials = false; } base.Url = value; } } public new bool UseDefaultCredentials { get { return base.UseDefaultCredentials; } set { base.UseDefaultCredentials = value; this.useDefaultCredentialsSetExplicitly = true; } } /// <remarks/> public event getApplicationCompletedEventHandler getApplicationCompleted; /// <remarks/> public event getBeanCompletedEventHandler getBeanCompleted; /// <remarks/> public event getServersCompletedEventHandler getServersCompleted; /// <remarks/> [System.Web.Services.Protocols.SoapRpcMethodAttribute("", RequestNamespace="urn:ProvisionService", ResponseNamespace="urn:ProvisionService")] [return: System.Xml.Serialization.SoapElementAttribute("getApplicationReturn")] public Application getApplication(Application o) { object[] results = this.Invoke("getApplication", new object[] { o}); return ((Application)(results[0])); } /// <remarks/> public void getApplicationAsync(Application o) { this.getApplicationAsync(o, null); } /// <remarks/> public void getApplicationAsync(Application o, object userState) { if ((this.getApplicationOperationCompleted == null)) { this.getApplicationOperationCompleted = new System.Threading.SendOrPostCallback(this.OngetApplicationOperationCompleted); } this.InvokeAsync("getApplication", new object[] { o}, this.getApplicationOperationCompleted, userState); } private void OngetApplicationOperationCompleted(object arg) { if ((this.getApplicationCompleted != null)) { System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg)); this.getApplicationCompleted(this, new getApplicationCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState)); } } /// <remarks/> [System.Web.Services.Protocols.SoapRpcMethodAttribute("", RequestNamespace="urn:ProvisionService", ResponseNamespace="urn:ProvisionService")] [return: System.Xml.Serialization.SoapElementAttribute("getBeanReturn")] public object getBean(object o) { object[] results = this.Invoke("getBean", new object[] { o}); return ((object)(results[0])); } /// <remarks/> public void getBeanAsync(object o) { this.getBeanAsync(o, null); } /// <remarks/> public void getBeanAsync(object o, object userState) { if ((this.getBeanOperationCompleted == null)) { this.getBeanOperationCompleted = new System.Threading.SendOrPostCallback(this.OngetBeanOperationCompleted); } this.InvokeAsync("getBean", new object[] { o}, this.getBeanOperationCompleted, userState); } private void OngetBeanOperationCompleted(object arg) { if ((this.getBeanCompleted != null)) { System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg)); this.getBeanCompleted(this, new getBeanCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState)); } } /// <remarks/> [System.Web.Services.Protocols.SoapRpcMethodAttribute("", RequestNamespace="urn:ProvisionService", ResponseNamespace="urn:ProvisionService")] [return: System.Xml.Serialization.SoapElementAttribute("getServersReturn")] public DispServer[] getServers() { object[] results = this.Invoke("getServers", new object[0]); return ((DispServer[])(results[0])); } /// <remarks/> public void getServersAsync() { this.getServersAsync(null); } /// <remarks/> public void getServersAsync(object userState) { if ((this.getServersOperationCompleted == null)) { this.getServersOperationCompleted = new System.Threading.SendOrPostCallback(this.OngetServersOperationCompleted); } this.InvokeAsync("getServers", new object[0], this.getServersOperationCompleted, userState); } private void OngetServersOperationCompleted(object arg) { if ((this.getServersCompleted != null)) { System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg)); this.getServersCompleted(this, new getServersCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState)); } } /// <remarks/> public new void CancelAsync(object userState) { base.CancelAsync(userState); } private bool IsLocalFileSystemWebService(string url) { if (((url == null) || (url == string.Empty))) { return false; } System.Uri wsUri = new System.Uri(url); if (((wsUri.Port >= 1024) && (string.Compare(wsUri.Host, "localHost", System.StringComparison.OrdinalIgnoreCase) == 0))) { return true; } return false; } } /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "2.0.50727.42")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.SoapTypeAttribute(Namespace="urn:ProvisionServiceBean_System")] public partial class Application { private string descField; private System.Nullable<int> idField; /// <remarks/> [System.Xml.Serialization.SoapElementAttribute(IsNullable=true)] public string desc { get { return this.descField; } set { this.descField = value; } } /// <remarks/> [System.Xml.Serialization.SoapElementAttribute(IsNullable=true)] public System.Nullable<int> id { get { return this.idField; } set { this.idField = value; } } } /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "2.0.50727.42")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.SoapTypeAttribute(Namespace="urn:ProvisionServiceFault")] public partial class ProvisionFault { private FaultCause faultCauseField; private string messageField; /// <remarks/> [System.Xml.Serialization.SoapElementAttribute(IsNullable=true)] public FaultCause faultCause { get { return this.faultCauseField; } set { this.faultCauseField = value; } } /// <remarks/> [System.Xml.Serialization.SoapElementAttribute(IsNullable=true)] public string message { get { return this.messageField; } set { this.messageField = value; } } } /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "2.0.50727.42")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.SoapTypeAttribute(Namespace="urn:ProvisionServiceFault")] public partial class FaultCause { private int codeField; private string messageField; /// <remarks/> public int code { get { return this.codeField; } set { this.codeField = value; } } /// <remarks/> [System.Xml.Serialization.SoapElementAttribute(IsNullable=true)] public string message { get { return this.messageField; } set { this.messageField = value; } } } /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "2.0.50727.42")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.SoapTypeAttribute(Namespace="urn:ProvisionServiceBean_System")] public partial class DispServer { private System.Nullable<int> deletedField; private System.Nullable<int> idField; private string machineNameField; private string serverNameField; private System.Nullable<int> siteIdField; /// <remarks/> [System.Xml.Serialization.SoapElementAttribute(IsNullable=true)] public System.Nullable<int> deleted { get { return this.deletedField; } set { this.deletedField = value; } } /// <remarks/> [System.Xml.Serialization.SoapElementAttribute(IsNullable=true)] public System.Nullable<int> id { get { return this.idField; } set { this.idField = value; } } /// <remarks/> [System.Xml.Serialization.SoapElementAttribute(IsNullable=true)] public string machineName { get { return this.machineNameField; } set { this.machineNameField = value; } } /// <remarks/> [System.Xml.Serialization.SoapElementAttribute(IsNullable=true)] public string serverName { get { return this.serverNameField; } set { this.serverNameField = value; } } /// <remarks/> [System.Xml.Serialization.SoapElementAttribute(IsNullable=true)] public System.Nullable<int> siteId { get { return this.siteIdField; } set { this.siteIdField = value; } } } /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Web.Services", "2.0.50727.42")] public delegate void getApplicationCompletedEventHandler(object sender, getApplicationCompletedEventArgs e); /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Web.Services", "2.0.50727.42")] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] public partial class getApplicationCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs { private object[] results; internal getApplicationCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) : base(exception, cancelled, userState) { this.results = results; } /// <remarks/> public Application Result { get { this.RaiseExceptionIfNecessary(); return ((Application)(this.results[0])); } } } /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Web.Services", "2.0.50727.42")] public delegate void getBeanCompletedEventHandler(object sender, getBeanCompletedEventArgs e); /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Web.Services", "2.0.50727.42")] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] public partial class getBeanCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs { private object[] results; internal getBeanCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) : base(exception, cancelled, userState) { this.results = results; } /// <remarks/> public object Result { get { this.RaiseExceptionIfNecessary(); return ((object)(this.results[0])); } } } /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Web.Services", "2.0.50727.42")] public delegate void getServersCompletedEventHandler(object sender, getServersCompletedEventArgs e); /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Web.Services", "2.0.50727.42")] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] public partial class getServersCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs { private object[] results; internal getServersCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) : base(exception, cancelled, userState) { this.results = results; } /// <remarks/> public DispServer[] Result { get { this.RaiseExceptionIfNecessary(); return ((DispServer[])(this.results[0])); } } } } #pragma warning restore 1591 Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113924
 - 7
 - Question Framework 1.1 & 2.0 If I have installed both versions of the framework, can I say to may application use 1.1 or 2.0 or when I run the applicacion will use the higher version???? Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113920
 - 8
 - HttpWebRequest / CookieContainer - not deleting cookies. when I use HttpWebRequest with CookieContainer object that handles cookies, if I have this cookie header in a response: Set-Cookie: CookieName=; path=/;expires=01-Jan-1999 00:00:00 GMT the cookie is not deleted for the next request, what should be and actually done with Internet Explorer as client. is this a bug is there a solution / workaroung by manually deleting the cookie? TIA. Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113919
 - 9
 - errors 1.1 System.Windows.Forms.Control 1. virtual fuctions OnPaint, OnCreated are breaking, but System.EventHandler is good . 2.SetStyle(System.Windows.Forms.ControlStyles.Opaque,false); is breaking (I try it in inner constructor class from inherit) but bellow is good: System.Drawing.Bitmap bitmap=new System.Drawing.Bitmap(control.Width,control.Height); bitmap.MakeTransparent(control.BackColor); control.BackgroundImage=bitmap; Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113915
 - 10
 - .NET 2.0 application stop serving ASPX pages? I've set up a development ASP.NET 2.0 application folder on a development server. This folder has been set up since at least January, and I have been working in it myself since February 2nd. It has been working fine up until this week. Three times this week it has locked up and no longer serves up .NET page requests. You can still access the files there through Windows explorer, and it still will serve non-.NET files such as ASP pages or text files through the browser, but it will not serve up any .NET ASPX pages. Even if the code inside is recompiled, or new pages are added, they are still not served up. I have eliminated any code-related issues on this, and have confirmed that if I restart IIS, then it starts working again. This did not happen for the past six weeks at least, but this week it has happened three times in four days. The lock-up today happened when I made a change to a web.config file but did not re-compile or anything, and when I hit the site again, it was doing this. I have made other web.config changes this week that did not cause this problem. Anyone else having this problem or know what is causing this? Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113910
 - 11
 - Printing Anomily Hi, I have a problem that I recently solved and thought I would throw it out to see if anyone can explain why I had to use the particular solution. I have an application that prints a series of numbers to any printer. It was developed in C# for .NET 2.0 Framework. The code looked like this //variable to hold the last Page and Print settings private PageSettings lastPageSettings; public FormMain() { InitializeComponent(); lastPageSettings = new PageSettings(); } private void runToolStripMenuItem_Click(object sender, EventArgs e) { PrintDocument pd = new PrintDocument(); FormNumberer thisForm = (FormNumberer)this.ActiveMdiChild; pd.PrintPage += new PrintPageEventHandler(thisForm.RunPage); pd.DefaultPageSettings = lastPageSettings; printDialog.Document = pd; if (printDialog.ShowDialog() == DialogResult.OK) pd.Print(); } Here is the issue. The above code works fine on a Wndows XP Machine. When the application is copied to a Windows 2000 Machine and executed I get a memory error at the line pd.Print(). Now while debugging I observed that the PrintDialog placed the printer settings into pd.PrinterSettings, but not into pd.DefaultPageSettings.PrinterSettings. So therefore the two variables would contain different printers if the default printer was not used. So I made this adjustment: if (printDialog.ShowDialog() == DialogResult.OK) { pd.DefaultPageSettings.PrinterSettings = printDialog.PrinterSettings; pd.Print(); } And now everything works fine. Does anyone have a clue as to why this may be? Thanks, Bryan Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113905
 - 12
 - .Net framework 2.0 and IIS Dear all If I install the .Net framework in my IIS server? Are there any impact wil be affected to the current ASP application? Will it update the files for the current ASP component? regards Good Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113903
 - 13
 - (paritially) trusted caller exception problem Hi, I have created an simple example to show of my problem and hope that someone could help me. SecurityTest (Solution) | +---SecTest (Project, Console Application) +---SecurityLib (Project, Library) +---SecurityLib2(Project, Library) SecTest (Referenz auf SecurityLib) macht nichts anderes als using System; using System.Collections.Generic; using System.Text; using SecurityLib; namespace SecTest { class Program { static void Main(string[] args) { Test x = new Test(); x.run(); } } } the following lines are added to the AssemblyInfo.cs of SecurityLib and SecurityLib2 //Remove all Permissions from Assembly to Explizit set them with RequestMinimum [assembly: System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.RequestOptional, Unrestricted = false)] if I comment out the lines all is working fine, but i want to explizit allow permissions with RequestMinimum SecuityLib (reference to SecurityLib2) is implemented as using System; using System.Collections.Generic; using System.Text; using SecurityLib2; namespace SecurityLib { public class Test { private class InternalClass : Class1 { int _x; public InternalClass(int x) : base() { _x = x; } } public void run() { int y = 0; y = 11; InternalClass ic = new InternalClass(y); //<-----------------------Exception occurs } } } SecurityLib2 looks like using System; using System.Collections.Generic; using System.Text; namespace SecurityLib2 { public abstract class Class1 { } } It's working if I AllowPartitialTrustedCallers in SecurityLib2, but I do not want that for all classes. The question is what's the permission to set (to RequestMinimum) so that the code is working. On my reallifeproject in the additional line in the AssemblyInfo.cs are [assembly: System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.RequestOptional, Unrestricted = false)] [assembly: System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.RequestMinimum, SerializationFormatter = true)] [assembly: System.Net.SocketPermission(System.Security.Permissions.SecurityAction.RequestMinimum, Unrestricted = true)] but that has no impact on the problem itself. Hope someone could help Thanks Mike Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113895
 - 14
 - Help! OnClick event in VScrollBar in .Net Compact Framework Hi! I tried to catch the Click event from a VScrollBar control but the Click event is not rised. MSDN says that OnClick event is suported by .Net Compact Framework and, in this case, I supose that the click event sould be rised bu VScrollBar. In this case I derived a class from VScrollBar and I overrided the OnClick protected method. I failed again because the overrided OnClick method is never called. I derived another class from Control and I overrided again the OnClick method. In this case the overrided OnClick method was called. Please, there is anybody who can tell me what is happening with OnClick method and Click event for VScrollBar control? And what should I do to catch the Click event for VScrollBar? Or what should I do to make it work OnClick overrided method in a derived class from VScrollBar? I use Windows XP Professional, Visual C# fromVisual Studio 2005 Professional Edition, .Net Compact Framework 1.0 or 1.1 Thank you in advance! Best regards, Cornel Gligan Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113894
 - 15
 - Creating simple exe that runs without framework? Hi all, probably a simple question for most of you: Can I create a simple executable with vb.net, that can run without the .Net framework installed? (like any executable created with VB6 in the old days..) I would like to stay away from permissions, strong naming GAC etc. for some simple tools... Thx, Marcel P.S. Why is it that .Net ships with command line tools that could easily be implemented with an interface???? (sn, gacutil, caspol..) Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113891
 - 16
 - clr error : 800700b My machine: Windows XP sp2 Hi, I have Vs.net 2003 with .net 1.1 sp 1 I installed also vs.net 2005 Each tool from 2003 sdk shipped with vsnet: TlbImp, ResGen etc gave first an error:"Unable to find a version of runtime to run this application" After I created a config file where I specified the runtime version 1.1.XXX I get this error: "clr error : 800700b" which seems to be BadImageFormat for an assembly. In most machines in our company we have the same problem and we are not able to find the cause for this errors. Does anyone have a clue or a tip for tracking the error cause? Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113889
 - 17
 - test Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113888
 - 18
 - CodeDom AppDomain & AssemblyResolve event I am using CodeDomProvider.CompileAssemblyFromSource to compile an assembly in memory. I would like to use the AppDomain AssemblyResolve event to help resolve references added via CompilerParameters.ReferencedAssemblies - but the compilation fails ("Metadata file ... could not be found") yet the AssemblyResolve event is not raised. Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113887
 - 19
 - Ngen process during installation of .net framework 1.1 Hi everyone, I have observed that the ngen process appears in the list of processes in taskmgr while .net framework 1.1 gets installed. This process consumes 0-50% of cpu and 0-20K of RAM. I would like to know if this process can be a cause of slowing down performance of a high speed application. The installer of this application examines whether .net framework is installed, if it is not installed it first installs .net 1.1 and then continues with its own installation. It would be great if anyone knows about problems related to ngen during installation of .net framework 1.1, say, under low memory conditions, or for particular OSs, or for particular hardware configuration -- Thanks, Sameeksha MCAD.Net Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113882
 - 20
 - Ngen process during installation of .net framework 1.1 Hi everyone, I have observed that the ngen process appears in the list of processes in taskmgr while .net framework 1.1 gets installed. This process consumes 0-50% of cpu and 0-20K of RAM. I would like to know if this process can be a cause of slowing down performance of a high speed application. The installer of this application examines whether .net framework is installed, if it is not installed it first installs .net 1.1 and then continues with its own installation. It would be great if anyone knows about problems related to ngen during installation of .net framework 1.1, say, under low memory conditions, or for particular OSs, or for particular hardware configuration -- Thanks, Sameeksha MCAD.Net Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113881
 - 21
 - How To Get Permission to Call File.SetAccessControl? My program needs to update the access control rules for a file (actually a virtual COMM port). I have the code working on my development machine. But when run on a different machine (or same machine with another account), it fails with a System.UnauthorizedAccessException. I presume it is because on my dev machine/account my account is a member of the Administrators group and on the other machine/account it is just a normal user. But I need to have the code work for a non-admin user (basically any user). What do I have to request to get this level of permission and how do I get it? Thanks. Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113880
 - 22
 - Trusting Assemblies Problem Hi all, I have an issue with trusting assemblies, I have a console app and which I have transferred to a server and use a batch file to run the exe. I have figured out that I need to trust the .exe for it to run on the server. Problem is: any modification to the exe and copying the exe to the same location does not run the program, it has to go through the process of trusting again even if the change is minimal. How can i avoid this? Thanks, Stephen Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113878
 - 23
 - Need 1.1 and 2? I am only using dotnet for apps that we installed that need it. This is a dumb question but do we need both 1.1 and 2 or will just 2 do for our simple need? Sorry to be so stupid about it but never can't find an answer on the net. Thank you. Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113876
 - 24
 - RegisterAssembly, CreateComInstanceFrom and IsCOMObject I am registering a managed class as a COM class via RegistrationServices.RegisterAssembly, then I am instantiating that class via CreateObject, then I am testing if the object is a COM instance via Type.IsCOMObject. Surprisingly (to me) the return value is False. This is a problem for me, because I am using managed code to write a OWC spreadsheet addin, and memory allocated by the addin is not freed when the spreadsheet is destroyed. I wanted to explicitly invoke InteropServices.Marshal.ReleaseComObject, but it is failing, presumably because the object returned by CreateObject() is, in some way, not a COM class. Can anyone explain why the IsCOMObject is returning False, and what I might be able to do to make it return True? Sub Main() Dim lvType As System.Type = GetType(ComClassTest) Dim lvRegistrationServices As New Runtime.InteropServices.RegistrationServices() lvRegistrationServices.RegisterAssembly(lvType.Assembly, Runtime.InteropServices.AssemblyRegistrationFlags.None) Runtime.InteropServices.RegistrationConnectionType.SingleUse) Try Dim lvObject As System.Object = Microsoft.VisualBasic.CreateObject(lvRegistrationServices.GetProgIdForType(lvType)) Debug.Assert(True = lvObject.GetType.IsCOMObject, "CreateObject creates a COM object") ' this assertion fails Finally lvRegistrationServices.UnregisterAssembly(lvType.Assembly) End Try End Sub Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113874
 - 25
 - Know the version of the framework ¿¿ Is there any liitle code or sentce in c# or VB to know the version of ASP.NET ??? Tag: Best design pattern for enabling/disabling menu items based on state of things? Tag: 113868

For example, I have a TreeView user control on my main form. I want to
enable/disable various things on the MenuStrip and ContextMenuStrip based on
the state of things in the TreeView (basically, what kind of node is
selected). Looking for ideas on what the best design pattern is for this.
Quick and dirty is to pass references for the menu strips to the user
control and let it set enable/disable on the menu items as state changes,
but that feels like a hack. I guess the classic Observer pattern is called
for? I don't want to make this overly complex, I just want a more elegant
solution than tightly coupling the classes (reuse isn't an issue however).

Top