DataTable.Merge()

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  - 1
    - SslStream caching and Vista: Hi. When my client program runs under XP and calls a server (solaris in this case) via an SslStream all is well. The client may make multiple calls and multiple authentication calls and be fine. Running the client under Vista, when the second authentication call is made it returns the following SSPI error: "A call to the SSPI failed, see inner exception" which reads "the Local Security Authority cannot be contacted" Well that was pretty mystifying so I looked at what was going on with ethereal. Apparently, on the second authentication go-round the client asks the server to re-use a session Id. The client responds and then Vista rejects a re-used session Id (even though it asked to do that). What I have found out is that the .net framework seems to cache SslStream sessions automatically, I have not found any way to turn this off for Vista - any ideas on how to do this? Thanks _Randal Tag: DataTable.Merge() Tag: 129529
  - 2
    - Getting 3.0 Facts Straight Ok. If anybody has a url , that'd be great. My IT Department is asking for the exact lowdown on 3.0, from a machine/OS perspective. 3.0 projects can be developed on a. XP SP2 b. Vista c. ( I guess 2003Server, but how uses that as their personal OS) and deployed on 2003Server (some future version of Vista) Oh man. I know I screwed that up somehow. I found a few blogs, but would like group help with the concrete facts with this one. Tag: DataTable.Merge() Tag: 129528
  - 3
    - case values in switch statement? Hi, guys, I have a switch statement like the follows in a KeyPress event: switch (e.KeyChar) { case '0' - '9': case 'A' - 'Z': break; default: break; } Of course, this did not work. But, how can I do such kind of case values which are in a range without writing each case value one by one? Thanks a lot. Tag: DataTable.Merge() Tag: 129521
  - 4
    - win32 error i've created a console application whcih reads different file formats and scans for some for words.... the application builds fine and executes finely..but sometimes, the exe automatically becomes 0kb and gives me this error <Application.exe> is not a valid win32 application.. can anyone help me out in fixing this issue... Tag: DataTable.Merge() Tag: 129516
  - 5
    - win32 error i've created a console application whcih reads different file formats and scans for some for words.... the application builds fine and executes finely..but sometimes, the exe automatically becomes 0kb and gives me this error <Application.exe> is not a valid win32 application.. can anyone help me out in fixing this issue... Tag: DataTable.Merge() Tag: 129515
  - 6
    - Advanced WPF text How to creat text on path? Can I creat non regtagular text box? How to control text tracking, kerning and leading? Thanks. Jim Tag: DataTable.Merge() Tag: 129514
  - 7
    - checkboxlist query I've used a checkboxlist control on my form.. i'm populating values dynamically at runtime to this list.. but when i do it, the checkboxes so added are remaining unchecked... but I want a newly added item to be checked by default... how do i do it? any good samples... Tag: DataTable.Merge() Tag: 129513
  - 8
    - How can I get volume ID Hello. How can I get volume ID on which I have open file? Alexi. Tag: DataTable.Merge() Tag: 129503
  - 9
    - Overriding "OnXXX" versus adding event handler Okay, this has come up in the past but I haven't seen anything that I would call a good, solid general rule. The question applies more generally, but I'm going to ask in the context of a Control. How does one decide whether to write an "override" method to an event and when to simply add an event handler for that event? For example, you can either write a new OnPaint override, or you can register a delegate that the Control's base OnPaint method will execute. My current thought is that when you are not inheriting from the base class, you register a delegate (duh, since you obviously have no way to override the method in that case), and when you are inheriting from the base class, you override the method (the main reason here being that if you're inheriting from the base class, you want your new functionality to always work, rather than relying on your delegate remaining in the event handler list). In other words, override when you can, add an event handler if you can't. Is it really as simple as that? Or are there other factors I should be considering? Many thanks in advance for the wisdom of those who have gone down this road before me. :) Pete Tag: DataTable.Merge() Tag: 129495
  - 10
    - convert an object to string and back (in a culture independent fashion) to store user preference in our application we have an 'hand written' XML file. (as opposed to XmlSerializer written one, which crash sometimes, on some user's computer, for some unknown reason.. but I'm digressing) In this XML file I store object value, which I convert to string (when writting) and from string (when reading) with a couple of simple function which (should) do a reversible conversion (using TypeConverter) (functions below). Unfortunately, for some Enum, (namely System.Windows.Forms.Keys) I got a culture dependent string, even though I specify CultureInfo.InvariantCulture as an argument in my ConvertXXX method with the TypeConverter. Even using 'new CultureInfo("en")' do not fix this behavior. Any tip on how to fix these function (below) so they provide a truly culture independent reversible object=>string=>object mechanism? =================================================== public static bool TryGetStringValue<T>(object val, out string ret) { if (val is string) { ret = (string)val; return true; } TypeConverter tc = TypeDescriptor.GetConverter(typeof(T)); if (tc == null) { ret = val.ToString(); return false; } try { ret = tc.ConvertToString(null, CultureInfo.InvariantCulture, val); return true; } catch (ArgumentException) { } catch (NotSupportedException) { } ret = val.ToString(); return false; } public static bool TryGetTValue<T>(object val, out T tval) { if (val is T) { tval = (T)val; return true; } TypeConverter tc = TypeDescriptor.GetConverter(typeof(T)); if (tc == null) { tval = default(T); return false; } if (!tc.IsValid(val)) { tval = default(T); return false; } try { tval = (T)tc.ConvertFrom(null, CultureInfo.InvariantCulture, val); return true; } catch (ArgumentException) { } catch (NotSupportedException) { } tval = default(T); return false; } =================================================== Tag: DataTable.Merge() Tag: 129493
  - 11
    - Windows Workflow - What basic tutorials? What's going on here? I thought I was an experienced programmer but I'm looking at the beginning WWF tutorial (Simple Expense Report) and I'm baffled. I feel like I don't know how to even begin reading this. I thought this was supposed to be interactive coding. Since when do we cut and paste into a project file? Is this just a temporary Beta thing? Why this constant use of command prompts? Also I have downloaded other samples onto my machine and none of them seem to work correctly. In the OrderingStateMachine demo, I get the error message: "The project file <C:\data\Visual Studio 2005\OrderingStateMachine\VB\OrderWorkFlows\OrderWorkFlows.vbproj cannot be opened. The project type is not supported by this installation." ?????? Could someone direct me to a more user-friendly, comprehensible tutorial? Tag: DataTable.Merge() Tag: 129485
  - 12
    - Truly cross platform? The thread bellow titled 'Determining if two paths are the same' brings to mind some of the first 'things' I had heard way back when DotNet started. It was going to be the panacea of cross platform development. I am asking the question here of the group to find out if everyone (anyone) thinks this has come (or is coming) to fruition. I think that perhaps it has gone a long way towards making it simpler to communicate between platforms but I am not sure if the framework itself has actually made it to the cross platform development hall of fame just yet. What do you folks think is the possibility of truly doing that? Looking at the mono project and actually trying to use it in some productive manner has showed me that this is far off. Just trying to get it working along with GDK and Mono-develop on a fedora Core 6 system was an exercise in futility. While I can understand what drives the open source community I honestly can't understand what keeps it going when stuff is that hard. I can install VS.NET 2005 and be developing in an hour. Hello world in Mono-develop never came to life. But, I digress and that is another rant for another message area. So, what are your thoughts and ideas? Tag: DataTable.Merge() Tag: 129483
  - 13
    - Locking Desktop and Threading Issue Hi, I have an application that displays forms on the users desktop, what I am doing with it is having a SystemEvents SessionSwitchEventHandler to capture the lock of the desktop, I would like to kill the forms when this event is captured, that piece is fine, but I would like to sleep the app until the SessionSwitchReason.SessionUnlock happens then I can wake it again and go the correct part of the code? Can I wake a sleeping thread, or should I not sleep the thread at all, is there another way to get the thread to sleep or hibernate and then wake up? Thanks Eamonn Tag: DataTable.Merge() Tag: 129478
  - 14
    - .Net Windows Service ...data access problem Hi, I am writing a .NET windows Service that will access the database every 10 minutes. When the service calls the function in the business services layer which in turn calls the correponding function in data access layer, this DAL function fails. The reason 'apparently' being that the it can not read the connection string information and hence can not create the database connection. Please note that that I am using enterprise library. All the projects representing business service layer, DAL, Model, Web UI and also the the windows service project are all in the same solution. Can anyone tell me what should I do to get around this problem. Thanks -Sam Tag: DataTable.Merge() Tag: 129470
  - 15
    - Installation problem - MSDN Libs for VS2005 I'm trying to jury-rig an installation of MSDN for VS2005 from ISO disks. The company I'm working for has an 'install drive' so I'm not sure of the pedigree of these directories. Essentially, since I don't have a CD burner at my disposal, I'm trying to run the installation directly from the ISO images using Microsoft's Virtual CD-ROM Control Panel v2.0.1.1. The problem is as follows: It doesn't matter if I run the setup on the first MSDN disk or call MSDN installation directly from VS2005's setup screen. Either way I get an error message saying: "Error 1311. Source file not found. U:\_17693_RTL_x86_enu_NET_Framework_SDK_HxS.cab. Verify that the file exists and that you can access it." I should note that given the current mounting scheme, the 3 ISO images are disks T, U, and V and presumably software on the T drive should be running. So how could it know about the U drive in the first place and why didn't it issue a standard Insert Disk prompt? (The file definitely exists and I can even copy it.) Tag: DataTable.Merge() Tag: 129468
  - 16
    - Questions about clickOnce hi, I have couple of questions about clickonce again, I am publishing a Winform appplication using ClickOnce. In the 'Publishing Location' text box I input the directory name (C:\CLICKONCE\Test2\). In the 'Installation URL' what shall i input. Why do i need to input a URL when it is simple Winform Application. Question2: When I publish a new version, The client should be prompted about the new version and it should run that instead of old one. It doesnt do it in my case, even though 'Application Should check for updates' is ON. Thanks in Advance irfan Tag: DataTable.Merge() Tag: 129464
  - 17
    - search results dialog box when i open search from the start menu, i get a listing in the task bar, but the box cannot be seen. when i click on the task bar block it appears to fly off the screen to the upper right Tag: DataTable.Merge() Tag: 129455
  - 18
    - The Interlocked on the Edge of Forever I've got a quick question that's been bugging me for a long, long time: Let's say I've got a member variable (in a heavily threaded app): private int _firstTime = 0; To make changes to this is easy enough: InterlockedExchange(ref _firstTime, 1); ... or I can use the InterlockedCompareExchange: int oldValue = InterlockedCompareExchange(ref _firstTime, 1, 0); No problems here. ... but, if I just want to read the value, I CANNOT do: int myValue = _firstTime; or if (_fistTime==0) Doing these requires a memory barrier of some type (volatile variable, monitor, etc) to have any degree of reliability. Now, reading the value out using InterlockedCompareExchange always seemed a bit silly to me. I don't want to always write: int myValue = InterlockedCompareExchange(ref _firstTime, Int32.MinValue, Int32.MinValue); I've never found (although not for lack of looking): int myValue = InterlockedRead(ref _firstTime); Of the code that I write, reading the value, and branching based on it's value, is much more common than writing to the value. I have, in the past, used volitile variables for this - but I've stopped due to the various issues regarding volatiles (non atomic reads & writes). Is there a concensus on the best way to do this? It seems like all the solutions are.... incomplete. Essentially I'm looking for a volitile varaiable that is atomically read and written. Unfortuantly, these don't exist in any language I've yet used. -- Chris Mullins, MCSD.NET, MCPD:Enterprise, Microsoft C# MVP http://www.coversant.com/blogs/cmullins Tag: DataTable.Merge() Tag: 129446
  - 19
    - tcpclient connect security exception - unauthorized Hi all, I have a tcpclient and server setup client and server both different machines. The client when run under administrator credentials connects fine, but when run under normal user, the tcpclient connect is refused with unauthorised. All of this is on same netword/domain. The client is running localy not a network share and connects to specific IP Adress on specific port. The ony difference between connecting and not is the credentials...... Is this .NET Casol as the socket is accessed, if so how do I resolve it, or are we looking at windows user permissions? Any help greatly appreciated... Pete Tag: DataTable.Merge() Tag: 129445
  - 20
    - How to tell which window becomes the foregroud window right away? Hello, I followed the MS instructions to subclass Windows using C#.net (http://support.microsoft.com/kb/815775) as the follows. I then opened several Excel files, and selected anyone of them as foreground window. I was expecting to see windows message, saying WM_ACTIVATE, or something like that, however, to my surprise, I saw NO windows message when I randomly selected those Excel windows, (although I could see other window messages, e.g., WM_GETTEXT). It was said that this was because "Subclassing this way only works for windows in its own process, not in other applications." Then, is there a way to make it work on other processes? Will automation will make the "other application" in the same process of our application? My goad is: Tell which (e.g. Excel) window becomes the active one AS SOON AS a (e.g. Excel) window becomes active. Thanks a lot. -------------------- Add a new Class module that is named SubclassHWND.cs to the Visual C# .NET or Visual C# 2005 application. To do this, click Add Class on the Project menu. 2. In the Name text box, type SubclassHWND.cs, and then click Open. 3. Replace the SubclassHWND class code with the following code:public class SubclassHWND : NativeWindow { protected override void WndProc(ref Message m) { // Perform whatever custom processing you must have for this message System.Diagnostics.Debug.WriteLine(m.ToString()); // forward message to base WndProc base.WndProc(ref m); } } 4. To demonstrate its use, add the following code to the Load event of Form1:SubclassHWND s = new SubclassHWND(); s.AssignHandle(this.Handle); //Now s should be listening to the messages of the form. Tag: DataTable.Merge() Tag: 129443
  - 21
    - some config error happens periodically only Hi we have a number of web applications once in a while they produce an error like below if you restart IIS - they disappear it happens on two servers any ideas? Thamks GSL ++++++++++++++++++++++++++++++++++++++++++++++++ Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: Unable to load file 'portallibrary'. Source Error: Line 196: <add assembly="System.EnterpriseServices, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/> Line 197: <add assembly="System.Web.Mobile, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/> Line 198: <add assembly="*"/> Line 199: </assemblies> Line 200: </compilation> Source File: c:\winnt\microsoft.net\framework\v1.1.4322\Config\machine.config Line: 198 Assembly Load Trace: The following information can be helpful to determine why the assembly 'portallibrary' could not be loaded. === Pre-bind state information === LOG: DisplayName = portallibrary (Partial) LOG: Appbase = file:///D:/inetpub/Informins_Root/csrportal LOG: Initial PrivatePath = bin Calling assembly : (Unknown). === LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind). LOG: Post-policy reference: portallibrary LOG: Attempting download of new URL file:///C:/WINNT/Microsoft.NET/Framework/v1.1.4322/Temporary ASP.NET Files/csrportal/4b3f8fd5/6c4a072e/portallibrary.DLL. LOG: Attempting download of new URL file:///C:/WINNT/Microsoft.NET/Framework/v1.1.4322/Temporary ASP.NET Files/csrportal/4b3f8fd5/6c4a072e/portallibrary/portallibrary.DLL. LOG: Attempting download of new URL file:///D:/inetpub/Informins_Root/csrportal/bin/portallibrary.DLL. LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind). LOG: Post-policy reference: portallibrary, Version=1.0.2158.24839, Culture=neutral, PublicKeyToken=null ---------------------------------------------------------------------------- ---- Version Information: Microsoft .NET Framework Version:1.1.4322.2032; ASP.NET Version:1.1.4322.2032 Tag: DataTable.Merge() Tag: 129442
  - 22
    - Determining if two paths are the same Hi there, Given two file names in relative or absolute format, I need to determine if they point to the same file. While I can simply pass each to "Path.GetFullPath()" and compare the results, what is the rule regarding case. That is, how do you determine whether the local file system is case-sensitive or not. I don't want to assume that Windows is the target OS even though realistically it will be. Thanks. Tag: DataTable.Merge() Tag: 129438
  - 23
    - Windows Forms Data Binding problem Hi, I builded my very first windows forms application and I used VS.NET 05 wizards to manage a simple Access table, but by now I have a problem: data aren't updated (without errors) I checked several thinkgs, rows are showed, but if I do some change and then I click on databindingnavigator save button, and then I exit and restart program the data are ... unmodified... where I'm wrong? Thanks! .:M:. Tag: DataTable.Merge() Tag: 129436
  - 24
    - Directory Sizes and Performance Hi all, I need to regularly traverse a large networked file system and return a list of directories and their respective sizes. The file system is large enough that performance is a serious concern. As well as the recursive [File/Directory]Info solution, I've seen reference to using the FileSystemObject or calls to FindFirstFile/ FindNextFile via COM interop. Does anybody know the fastest way of doing this in .Net? -- Bob Tag: DataTable.Merge() Tag: 129434
  - 25
    - .net 3.5 framework. I cannot install any of the new Orcas Express CTP (Beta 1) editions because they all fail and quit when attempting to install the .net 3.5 framework. I have the .net frameworks 1.1, 1.1 Hotfix (KB886903), 2.0 and 3.0 installed on my machine and am running XP SP2. Tag: DataTable.Merge() Tag: 129431
- Next
  - 1
    - .net 3.5 framework. I cannot install any of the new Orcas Express CTP (Beta 1) editions because they all fail and quit when attempting to install the .net 3.5 framework. I have the .net frameworks 1.1, 1.1 Hotfix (KB886903), 2.0 and 3.0 installed on my machine and am running XP SP2. Tag: DataTable.Merge() Tag: 129430
  - 2
    - .net framwork 3.5 I recently attempted to install VWD and VD editions of Orcas Express CTP. They both failed during the installation of the .net framework 3.5 with no other error message other than stating that they had, in fact, failed because of .net 3.5. I have installed on my machine .net frameworks, 1.1, 1.1 Hotfix (KB886903), 2.0 and 3.0. If one or more of these needs to be uninstalled, there was no instructions to such effect on the Orcas Express CTP installation pages. I am also running XP SP2. Any insite on this? Tag: DataTable.Merge() Tag: 129429
  - 3
    - .net 3.5 framework. I cannot install any of the new Orcas Express CTP (Beta 1) editions because they all fail and quit when attempting to install the .net 3.5 framework. I have the .net frameworks 1.1, 1.1 Hotfix (KB886903), 2.0 and 3.0 installed on my machine and am running XP SP2. Tag: DataTable.Merge() Tag: 129428
  - 4
    - Interface & Event I have an interface ITest that includes an event TestStatusChange. There is also a class Test that implements ITest. In one of the functions of Test I want to call the event (see code at the end) but get the following error: "The event 'eventTest.Test.TestStatusChanged' can only appear on the left hand side of += or -=. All samples I saw seem to do the same I am doing. What am I missing? Thanks using System; using System.Collections.Generic; using System.Text; namespace eventTest { public delegate void TestStatus(String status); interface ITest { event TestStatus TestStatusChanged; } class Test : ITest { public event TestStatus TestStatusChanged { add { TestStatusChanged += value; } remove { TestStatusChanged -= value; } } public void Check() { TestStatusChanged("ok"); //!!!!!!!!! COMPILE ERROR !!!!!!!!!!!!! } } class Program { static void Main(string[] args) { } } } Tag: DataTable.Merge() Tag: 129417
  - 5
    - System.Speech How do I add a reference to System.Speech in Visual Studio? -- Arne Garvander (I program VB.Net for fun and C# to get paid.) Tag: DataTable.Merge() Tag: 129410
  - 6
    - Any groups created for WPF / WCF ? Hello, is there any specific newsgroups created for WCF or WPF ? I tried searching but could not find.. it would be a good idea if Microsoft can create such newsgroups, will help people developing early applications on these new technologies. Newsgroup on LINQ would also be a good idea.. ! :) Regards, Jigar Mehta Tag: DataTable.Merge() Tag: 129406
  - 7
    - DataSet fields not updating, no errors being generated I am using a web service to update some database fields. I used the dataset designer to define my datatable and tableadapter. I had it automatically create the insert, update, and delete statements. When I run the update method, all of the fields are updated except for four datetime fields. Another attribute these fields have in common is that they allow nulls. When the method runs, the values in the fields are not overwritten, they are simply not changed. Here is the code used for the updating: PurchaseOrderTableAdapter dAdapter = new PurchaseOrderTableAdapter(); PoDataSet.PurchaseOrderDataTable ds = dAdapter.GetDataByPoID(poID); foreach (PoDataSet.PurchaseOrderRow dataRow1 in ds) { dataRow1["PONumber"] = poNumber; dataRow1["ConfirmingTo"] = confirmingTo; dataRow1["poDate"] = poDate; dataRow1["ReqDate"] = reqDate; dataRow1["CancelDate"] = cancelDate; dataRow1["AllowBackOrder"] = allowBackOrder; dataRow1["ShipTo"] = shipTo; dataRow1["BillTo"] = billTo; dataRow1["ShipVia"] = shipVia; dataRow1["FOBPoint"] = fobPoint; dataRow1["Terms"] = terms; dataRow1["IsPlaced"] = isPlaced; dataRow1["placeDate"] = datePlaced; } try { dAdapter.Update(ds); } catch (Exception e) { return 1 + e.Message; } return "0"; I am new to C# and .net in general. Any ideas as to why this method is not updating the "placeDate", "poDate", "ReqDate", and "CancelDate" fields? The variables used are defined as DateTime types. As I said, there are no errors flagged during the process. Your advice is greatly appreciated. -- Alex Tag: DataTable.Merge() Tag: 129403
  - 8
    - Service running Infinitely Hi, I'm developing a service that should run infinitely and should not be stoppable. The user (any user even admin) should not be able to stop/terminate the service. Is there any way? or should I go for a normal other than service? Any recommendations are appreciated. thanks Tag: DataTable.Merge() Tag: 129400
  - 9
    - Converting source code to another language? Is it possible to convert source code from one language into another using the codedom ICodeParser interface? Has anyone ever tried it? Tag: DataTable.Merge() Tag: 129398
  - 10
    - Need help on CAB I'm a new bie to cab...need some info on displaying a new child window using CAB... My requirement is to show a new form if I click on teh File menu option on the Main Windows form.. So,I've created a shell with File -> New menu option...but and registered a click event with the New menu button oiption..but the problem is like I'm unable to dsiplay the new form in child window....currently my new form appears in the parent window only....How do I display data in a child window using CAB framework.. can anyone help me out Tag: DataTable.Merge() Tag: 129397
  - 11
    - Retrieving data from a Windows Service Hi, I have a collection that resides in a windows service and I want to know is remoting the best way to access this data? The collection will change on an ongoing basis, but whenever I make a request to the windows service I want to be able to get back the latest elements in the collection. Should I use remoting an expose my object as a Singleton? Is there a better way to do this? Thank you. Greg Tag: DataTable.Merge() Tag: 129395
  - 12
    - deadlock on a single Select not in a transaction Hi, We have a web application developped in asp.net (I think it's not relevant, but well, it's so you know)... Yesterday, we received the following message "Transaction (Process ID 69) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction. " The thing is, the query was a simple select with inner joins between 3 tables (like select fields from table1 inner join table2... inner join table3....). This command is not in a transaction, so the deadlock seems impossible. And moreover, the deadlock occurs on the DataReader.Read() not on the Command.ExecuteReader(...). Can someone explain why the deadlock can have occured and what could be the cause and solution to it? Can it be a bug in SQL Server or in the .net framework (I really doubt about it)? thanks ThunderMusic Tag: DataTable.Merge() Tag: 129387
  - 13
    - EventTraceLogListener and error? I started with the logging application block in the April 2007 Enterprise Library. Looking through the source it looks like when it comes to the event log they just inherit the EventTraceLogListener class. It seems to work. I look via the EventViewer and can see messages that are place there via my app. Is there a way to specify that the entry is an error? warning? Something other than "Information"? Thank you. Kevin Tag: DataTable.Merge() Tag: 129386
  - 14
    - Subclassing question. Hello, I followed the MS instructions to subclass Windows using C#.net (http://support.microsoft.com/kb/815775) as the follows. I then opened several Excel files, and selected anyone of them as foreground window. I was expecting to see windows message, saying WM_ACTIVATE, or something like that, however, to my surprise, I saw NO windows message when I randomly selected those Excel windows, (although I could see other window messages, e.g., WM_GETTEXT). What was wrong here? I need to be able to tell which Excel window is the active one programmatically. Was this a right approach for this purpose? Any papers? Thanks a lot. -------------------- Add a new Class module that is named SubclassHWND.cs to the Visual C# .NET or Visual C# 2005 application. To do this, click Add Class on the Project menu. 2. In the Name text box, type SubclassHWND.cs, and then click Open. 3. Replace the SubclassHWND class code with the following code:public class SubclassHWND : NativeWindow { protected override void WndProc(ref Message m) { // Perform whatever custom processing you must have for this message System.Diagnostics.Debug.WriteLine(m.ToString()); // forward message to base WndProc base.WndProc(ref m); } } 4. To demonstrate its use, add the following code to the Load event of Form1:SubclassHWND s = new SubclassHWND(); s.AssignHandle(this.Handle); //Now s should be listening to the messages of the form. Tag: DataTable.Merge() Tag: 129385
  - 15
    - On Adobe's Flash & Flex in ASP.NET I have been asked to create some simple animation using Adobe Flash player in ASP.NET(C#) web application. While I am fairly well versed with ASP.NET C#, I absolutely have NO IDEA about how to say "Hello World" in a Flash enabled web page rendered via ASP.NET. Can any one let me get started? --- By the way, there is a NEWS today about Adobe Flex 2, which I can not comprehend. There are getting started articles for PHP developers on Adobe's website but nothing for ASP.NET developers. http://news.com.com/Adobe+to+open-source+Flash+tool+Flex/2100-7344_3-6179305.html It will be nice to hear something from experienced people. Microsoft folks too are urged to speak something. How Microsfott's Silverlight fits into all this? Can a person who rely solel on VWD/C# Express count on Silverline? Thanks in advance ! -- a VWD(C#) Express explorer Tag: DataTable.Merge() Tag: 129376
  - 16
    - additional files in clickonce hi, I want to add some CAD files or Excel Templates when i publish using ClickOnce. Is there any way i can do it. Thanks irfan Tag: DataTable.Merge() Tag: 129374
  - 17
    - clickOnce Update not working hi, I created a clickonce application and installed it in the client machine. As expected a new shortcut is created in the Start->All Programs. However, when i publish the application again after making some changes, i expect that the newer version should run when i click on the shortcut, which does not happen in my case. Can some one tell me if i am doing anything wrong. (On the publish page "Application should Check for updates" is ON). (The application is a basic Winforms application) regards, irfan sheikh Tag: DataTable.Merge() Tag: 129373
  - 18
    - Workflow - CallExternalMethod -Correlation value is already intial Repeating calls to a CallExternalMethodActivity in a while loop - InvalidOperationException - Correlation value is already initialized I have a workflow that needs to call out to an external event until the event responds with a result of true. Unfortunately, the second time I call the external event, I get the error that the Correlation value is already initialized. I've implemented this with a while loop that has the condition that the result is true or an elapsed time of one hour has occured. The first activity in the loop is to call the external activity. The second is to delay for five minutes. Pretty simple. I've included the full error message the XOML and the code behind below. Has anyone run into this situation? Is there a way around it? Thanks in advance for any help. Jeff ExtractPackaging.BusinessLogic.ExtractIssuePackagingActivity Error: 1 : HandleFaultCode_ExecuteCodeystem.InvalidOperationException: Correlation value on declaration "ActivityContextGuidCorrelationToken" is already initialized. at System.Workflow.Runtime.CorrelationToken.Initialize(Activity activity, ICollection`1 propertyValues) at System.Workflow.Activities.CorrelationService.InvalidateCorrelationToken(Activity activity, Type interfaceType, String methodName, Object[] messageArgs) at System.Workflow.Activities.CallExternalMethodActivity.Execute(ActivityExecutionContext executionContext) at System.Workflow.ComponentModel.ActivityExecutor`1.Execute(T activity, ActivityExecutionContext executionContext) at System.Workflow.ComponentModel.ActivityExecutor`1.Execute(Activity activity, ActivityExecutionContext executionContext) at System.Workflow.ComponentModel.ActivityExecutorOperation.Run(IWorkflowCoreRuntime workflowCoreRuntime) at System.Workflow.Runtime.Scheduler.Run() <SequenceActivity x:Class="ExtractPackaging.BusinessLogic.ExtractIssuePackagingActivity" x:Name="ExtractIssuePackagingActivity" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/workflow"> <CodeActivity x:Name="AcceptRequest" ExecuteCode="AcceptRequest_ExecuteCode" /> <ParallelActivity x:Name="ReadyForPackagingCheckAndWait"> <SequenceActivity x:Name="PrimaryExecutionPath"> <ListenActivity x:Name="ListenForExtractReadyTimeoutAfterOneWeek"> <EventDrivenActivity x:Name="ListenForExtractIssueReady"> <HandleExternalEventActivity x:Name="ExtractIssueIsReadyForPackagingEventHandler" EventName="ExtractIssueReadyForPackagingEvent" InterfaceType="{x:Type ExtractPackaging.BusinessLogic.IExtractIssuePackagingService}"> <HandleExternalEventActivity.CorrelationToken> <wf0:CorrelationToken Name="ActivityContextGuidCorrelationToken" OwnerActivityName="ExtractIssuePackagingActivity" xmlns:wf0="http://schemas.microsoft.com/winfx/2006/xaml/workflow" /> </HandleExternalEventActivity.CorrelationToken> </HandleExternalEventActivity> <CodeActivity x:Name="SetIsReadyForPackaging" ExecuteCode="SetIsReadyForPackaging_ExecuteCode" /> </EventDrivenActivity> <EventDrivenActivity x:Name="TimoutAfterOneWeek"> <DelayActivity InitializeTimeoutDuration="TimeToWaitForReady_InitializeTimeoutDuration" TimeoutDuration="7.00:00:00" x:Name="TimeToWaitForReady" /> <TerminateActivity x:Name="TerminateWorkflow" Error="Workflow Terminated: Files Still not Available After Wait Duration Exceeded" /> <ThrowActivity x:Name="ThrowTimeoutException" Fault="{ActivityBind ExtractIssuePackagingActivity,Path=TimeoutException}" Enabled="False" FaultType="{x:Type p12:Exception}" xmlns12="clr-namespaceystem;Assembly=mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> </EventDrivenActivity> </ListenActivity> <CodeActivity x:Name="SetDoneWaitingForReady" ExecuteCode="SetDoneWaitingForReady_ExecuteCode" /> </SequenceActivity> <SequenceActivity x:Name="KeepAskingIfExtractIssueReadyForPackaging"> <WhileActivity x:Name="WhileNotIsReadyForPackaging"> <WhileActivity.Condition> <RuleConditionReference ConditionName="ExtractIssueIsNotReadyForPackagingAndNotDoneWaitingCondition" /> </WhileActivity.Condition> <SequenceActivity x:Name="WaitAndCallIsReadyAgain"> <CallExternalMethodActivity x:Name="CallIsExtractIssueReadyForPackaging" InterfaceType="{x:Type ExtractPackaging.BusinessLogic.IExtractIssuePackagingService}" MethodName="ExtractIssueIsReadyForPackaging"> <CallExternalMethodActivity.CorrelationToken> <wf0:CorrelationToken Name="ActivityContextGuidCorrelationToken" OwnerActivityName="ExtractIssuePackagingActivity" xmlns:wf0="http://schemas.microsoft.com/winfx/2006/xaml/workflow" /> </CallExternalMethodActivity.CorrelationToken> <CallExternalMethodActivity.ParameterBindings> <WorkflowParameterBinding ParameterName="activityContextGuid"> <WorkflowParameterBinding.Value> <ActivityBind Name="ExtractIssuePackagingActivity" Path="ActivityContextGuid" /> </WorkflowParameterBinding.Value> </WorkflowParameterBinding> <WorkflowParameterBinding ParameterName="extractIssuePackage"> <WorkflowParameterBinding.Value> <ActivityBind Name="ExtractIssuePackagingActivity" Path="ExtractIssuePackage" /> </WorkflowParameterBinding.Value> </WorkflowParameterBinding> </CallExternalMethodActivity.ParameterBindings> </CallExternalMethodActivity> <DelayActivity InitializeTimeoutDuration="LoopDelayBetweenCallsToIsReady_InitializeTimeoutDuration" TimeoutDuration="00:00:00" x:Name="LoopDelayBetweenCallsToIsReady" /> </SequenceActivity> </WhileActivity> </SequenceActivity> </ParallelActivity> <CallExternalMethodActivity x:Name="CallExternalPackageExtractIssue" InterfaceType="{x:Type ExtractPackaging.BusinessLogic.IExtractIssuePackagingService}" MethodName="PackageExtractIssue"> <CallExternalMethodActivity.CorrelationToken> <wf0:CorrelationToken Name="ActivityGuidCorrelationToken" OwnerActivityName="ExtractIssuePackagingActivity" xmlns:wf0="http://schemas.microsoft.com/winfx/2006/xaml/workflow" /> </CallExternalMethodActivity.CorrelationToken> <CallExternalMethodActivity.ParameterBindings> <WorkflowParameterBinding ParameterName="activityContextGuid"> <WorkflowParameterBinding.Value> <ActivityBind Name="ExtractIssuePackagingActivity" Path="ActivityContextGuid" /> </WorkflowParameterBinding.Value> </WorkflowParameterBinding> <WorkflowParameterBinding ParameterName="extractIssuePackageXmlString"> <WorkflowParameterBinding.Value> <ActivityBind Name="ExtractIssuePackagingActivity" Path="ExtractIssuePackageXmlString" /> </WorkflowParameterBinding.Value> </WorkflowParameterBinding> </CallExternalMethodActivity.ParameterBindings> </CallExternalMethodActivity> <ListenActivity x:Name="WaitForResonseFromExternalCall"> <EventDrivenActivity x:Name="eventDrivenActivity1"> <HandleExternalEventActivity Invoked="OnExtractIssuePackaged" x:Name="handleExternalEventActivity1" EventName="ExtractIssuePackaged" InterfaceType="{x:Type ExtractPackaging.BusinessLogic.IExtractIssuePackagingService}"> <HandleExternalEventActivity.CorrelationToken> <wf0:CorrelationToken Name="ActivityGuidCorrelationToken" OwnerActivityName="ExtractIssuePackagingActivity" xmlns:wf0="http://schemas.microsoft.com/winfx/2006/xaml/workflow" /> </HandleExternalEventActivity.CorrelationToken> </HandleExternalEventActivity> </EventDrivenActivity> <EventDrivenActivity x:Name="eventDrivenActivity2"> <DelayActivity TimeoutDuration="00:00:10" x:Name="ExternalEventTimeout" /> <CodeActivity x:Name="RaiseTimeoutException" ExecuteCode="RaiseTimeoutException_ExecuteCode" /> </EventDrivenActivity> </ListenActivity> <CodeActivity x:Name="ExtractIssuePackagingActivityComplete" ExecuteCode="ExtractIssuePackagingActivityComplete_ExecuteCode" /> <FaultHandlersActivity x:Name="faultHandlersActivity1"> <FaultHandlerActivity x:Name="GenericFaultHandler" FaultType="{x:Type p6:Exception}" xmlns6="clr-namespaceystem;Assembly=mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> <CodeActivity x:Name="HandleFaultCode" ExecuteCode="HandleFaultCode_ExecuteCode" /> </FaultHandlerActivity> </FaultHandlersActivity> </SequenceActivity> using System; using System.ComponentModel; using System.ComponentModel.Design; using System.Collections; using System.Drawing; using System.Workflow.ComponentModel.Compiler; using System.Workflow.ComponentModel.Serialization; using System.Workflow.ComponentModel; using System.Workflow.ComponentModel.Design; using System.Workflow.Runtime; using System.Workflow.Activities; using System.Workflow.Activities.Rules; using System.Configuration; using System.Diagnostics; namespace ExtractPackaging.BusinessLogic { public partial class ExtractIssuePackagingActivity : SequenceActivity { private static TraceSource traceSource = new TraceSource("ExtractPackaging.BusinessLogic.ExtractIssuePackagingActivity"); private DateTime dateTimePackagingStarted = DateTime.Now; public DateTime DateTimePackagingStarted { get { return dateTimePackagingStarted; } set { dateTimePackagingStarted = value; } } private bool allFilesReadyForPackaging = false; public bool AllFilesReadyForPackaging { get { return allFilesReadyForPackaging; } set { allFilesReadyForPackaging = value; } } private DateTime datetimeSentToConcretePackager; public DateTime DateTimeSentToConcretePackager { get { return datetimeSentToConcretePackager; } set { datetimeSentToConcretePackager = value; } } public static DependencyProperty ExtractIssuePackageProperty = System.Workflow.ComponentModel.DependencyProperty.Register( "ExtractIssuePackage", typeof(WebServicesFramework.BusinessEntities.ExtractIssuePackage), typeof(ExtractIssuePackagingActivity)); [Description("The ExtractIssuePackage for which to fulfill the packaging requst")] [Category("ExtractIssuePackaging")] [Browsable(true)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)] public WebServicesFramework.BusinessEntities.ExtractIssuePackage ExtractIssuePackage { get { return ((WebServicesFramework.BusinessEntities.ExtractIssuePackage)(base.GetValue(ExtractIssuePackagingActivity.ExtractIssuePackageProperty))); } set { base.SetValue(ExtractIssuePackagingActivity.ExtractIssuePackageProperty, value); } } public static DependencyProperty ExtractIssuePackageGuidProperty = System.Workflow.ComponentModel.DependencyProperty.Register("ExtractIssuePackageGuid", typeof(System.String), typeof(ExtractIssuePackagingActivity)); [Description("The ExtractIssuePackageGuid")] [Category("ExtractIssuePackaging")] [Browsable(true)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)] public String ExtractIssuePackageGuid { get { return ((System.String)(base.GetValue(ExtractIssuePackagingActivity.ExtractIssuePackageGuidProperty))); } set { base.SetValue(ExtractIssuePackagingActivity.ExtractIssuePackageGuidProperty, value); } } [Description("ActivityContextGuid")] [Category("Activity")] [Browsable(true)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)] public string ActivityContextGuid { get { return ((string)(base.GetValue(Activity.ActivityContextGuidProperty).ToString())); } } [Description("TimeoutException")] [Category("ExtractPackaging")] [Browsable(true)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)] public Exception TimeoutException { get { return new Exception("ExtractPackaging.BusinessLogic.ExtractIssuePackagingActivity.TimeoutException"); } } public static DependencyProperty IsReadyForPackagingProperty = System.Workflow.ComponentModel.DependencyProperty.Register( "IsReadyForPackaging", typeof(bool), typeof(ExtractIssuePackagingActivity)); [Description("Indicates if the current extract is ready for packaging")] [Category("ExtractIssuePackaging")] [Browsable(true)] [DefaultValue(false)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)] public bool IsReadyForPackaging { get { return ((bool)(base.GetValue(ExtractIssuePackagingActivity.IsReadyForPackagingProperty))); } set { base.SetValue(ExtractIssuePackagingActivity.IsReadyForPackagingProperty, value); } } public static DependencyProperty DoneWaitingForReadyProperty = System.Workflow.ComponentModel.DependencyProperty.Register( "DoneWaitingForReady", typeof(bool), typeof(ExtractIssuePackagingActivity)); [Description("Indicates if the workflow is done waiting for the Extract Issue to be ready for packaging")] [Category("ExtractIssuePackaging")] [Browsable(true)] [DefaultValue(false)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)] public bool DoneWaitingForReady { get { return ((bool)(base.GetValue(ExtractIssuePackagingActivity.DoneWaitingForReadyProperty))); } set { base.SetValue(ExtractIssuePackagingActivity.DoneWaitingForReadyProperty, value); } } public static DependencyProperty ExtractIssuePackageXmlStringProperty = System.Workflow.ComponentModel.DependencyProperty.Register( "ExtractIssuePackageXmlString", typeof(string), typeof(ExtractIssuePackagingActivity)); [Description("Xml representation of the ExtractIssuePackage property")] [Category("ExtractIssuePackaging")] [Browsable(true)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)] public string ExtractIssuePackageXmlString { get { return ((string)(base.GetValue(ExtractIssuePackagingActivity.ExtractIssuePackageXmlStringProperty))); } set { base.SetValue(ExtractIssuePackagingActivity.ExtractIssuePackageXmlStringProperty, value); } } public static DependencyProperty PackagedEvent = DependencyProperty.Register("Packaged", typeof(EventHandler), typeof(ExtractIssuePackagingActivity)); [Description("ExtractIssue Packaged")] [Category("ExtractIssuePackaging")] [Browsable(true)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)] public event EventHandler Packaged { add { base.AddHandler(ExtractIssuePackagingActivity.PackagedEvent, value); } remove { base.RemoveHandler(ExtractIssuePackagingActivity.PackagedEvent, value); } } private WebServicesFramework.BusinessEntities.Shipment shipment; public WebServicesFramework.BusinessEntities.Shipment Shipment { get { return this.shipment; } set { this.shipment = value; } } private ExtractIssuePackagedEventArgs extractIssuePackagedEventArgs = default(ExtractPackaging.BusinessLogic.ExtractIssuePackagedEventArgs); public ExtractIssuePackagedEventArgs ExtractIssuePackagedEventArgs { get { return this.extractIssuePackagedEventArgs; } } private void AcceptRequest_ExecuteCode(object sender, EventArgs e) { string activityContextGuid = base.GetValue(Activity.ActivityContextGuidProperty).ToString(); traceSource.TraceEvent( TraceEventType.Information, 1, "AcceptRequest_ExecuteCode: ActivityContextGuid = " + activityContextGuid); } private void RaiseTimeoutException_ExecuteCode(object sender, EventArgs e) { traceSource.TraceEvent( TraceEventType.Warning, 1, "RaiseTimeoutException_ExecuteCode"); throw new Exception("ExtractPackaging.BusinessLogic.ExtractIssuePackagingActivity.RaiseTimeoutException_ExecuteCode"); } private void OnExtractIssuePackaged(object sender, ExternalDataEventArgs e) { string activityContextGuid = ((ExtractIssuePackagedEventArgs)e).ActivityContextGuid; traceSource.TraceEvent( TraceEventType.Information, 1, "OnExtractIssuePackaged: ActivityContextGuid = " + activityContextGuid); string xmlString = ((ExtractIssuePackagedEventArgs)e).ExtractIssuePackageXmlString.ToString(); ExtractIssuePackageXmlString = xmlString; ExtractIssuePackage = WebServicesFramework.BusinessEntities.ExtractIssuePackage.FromXmlString(xmlString); WebServicesFramework.BusinessEntities.Manager manager = new WebServicesFramework.BusinessEntities.Manager( WebServicesFramework.DataAccess.Manager.Engine); int extractIssuePackageIndex; extractIssuePackageIndex = manager.ShipmentHelper.GetExtractIssuePackageIndexByGuid( this.Shipment, ExtractIssuePackage.ExtractIssuePackageGuid); if (extractIssuePackageIndex == -1) { extractIssuePackageIndex = manager.ShipmentHelper.GetExtractIssuePackageIndexByData( this.Shipment, ExtractIssuePackage.ExtractId, ExtractIssuePackage.IssueDate, ExtractIssuePackage.PackagingSpecificationId); } shipment.ExtractIssuePackages[extractIssuePackageIndex] = ExtractIssuePackage; } private void ExtractIssuePackagingActivityComplete_ExecuteCode(object sender, EventArgs e) { string activityContextGuid = base.GetValue(Activity.ActivityContextGuidProperty).ToString(); traceSource.TraceEvent( TraceEventType.Information, 1, "ExtractIssuePackagingActivityComplete_ExecuteCode: ActivityContextGuid = " + activityContextGuid); traceSource.TraceEvent( TraceEventType.Information, 1, " "); } private void UpdateExtractIssuePackageId_ExecuteCode(object sender, EventArgs e) { string activityContextGuid = base.GetValue(Activity.ActivityContextGuidProperty).ToString(); traceSource.TraceEvent( TraceEventType.Information, 1, "UpdateExtractIssuePackageId_ExecuteCode: ActivityContextGuid = " + activityContextGuid); ExtractIssuePackage.ExtractIssuePackageGuid = new Guid(ExtractIssuePackageGuid); // Don't forget to update the xmlString as well ExtractIssuePackageXmlString = WebServicesFramework.BusinessEntities.ExtractIssuePackage.ToXmlString( ExtractIssuePackage); } private void HandleFaultCode_ExecuteCode(object sender, EventArgs e) { traceSource.TraceEvent( TraceEventType.Error, 1, "HandleFaultCode_ExecuteCode:" + GenericFaultHandler.Fault.ToString()); } private void SetDoneWaitingForReady_ExecuteCode(object sender, EventArgs e) { this.DoneWaitingForReady = true; this.AllFilesReadyForPackaging = true; } private void LoopDelayBetweenCallsToIsReady_InitializeTimeoutDuration(object sender, EventArgs e) { this.LoopDelayBetweenCallsToIsReady.TimeoutDuration = TimeSpan.Parse( ConfigurationManager.AppSettings["ExtractPackaging.BusinessLogic.ExtractIssuePackagingActivity.LoopDelayBetweenCallsToIsReady"]); } private void TimeToWaitForReady_InitializeTimeoutDuration(object sender, EventArgs e) { this.TimeToWaitForReady.TimeoutDuration = TimeSpan.Parse( ConfigurationManager.AppSettings["ExtractPackaging.BusinessLogic.ExtractIssuePackagingActivity.TimeToWaitForReady"]); } private void SetIsReadyForPackaging_ExecuteCode(object sender, EventArgs e) { this.IsReadyForPackaging = true; } private void CallExternalPackageExtractIssue_MethodInvoking(object sender, EventArgs e) { DateTimeSentToConcretePackager = DateTime.Now; } private void ResetCorrelationToke_CodeActivity_ExecuteCode(object sender, EventArgs e) { } } } Tag: DataTable.Merge() Tag: 129372
  - 19
    - How to capture Item's event through an object of its collection in a external class? There are two classes 1) Key - contains some public variables, one method "Reset" and one event "valuesReset" which is raised by Reset method. 2) Keys - this class is collection of objects of class 'Key' and it is inherited with ReadOnlyCollection(Of key). I'm pasting the code here Class key Public Event valuesReset() Public _name As String = "" Public _title As Integer = 0 Public _strong As Integer = 0 Public _italic As Integer = 0 Public Function reset() As Boolean _name = "" _title = 0 _strong = 0 _italic = 0 RaiseEvent valuesReset() End Function End Class 'Collection of key Class keys Inherits ReadOnlyCollection(Of key) Friend Sub New() MyBase.New(New List(Of key)) End Sub Friend Function add(ByVal tmpKey As key) As Integer If Items.Contains(tmpKey) Then Return Items.IndexOf(tmpKey) End If Items.Add(tmpKey) Return Count - 1 End Function Friend Sub AddAt(ByVal tmpKey As key, ByVal index As Integer) If index < 0 OrElse index > Items.Count - 1 Then Return End If If Contains(tmpKey) Then Return End If Items.Insert(index, tmpKey) End Sub Friend Sub Dispose() For i As Integer = Count - 1 To 0 Step -1 Me(i).reset() Next End Sub Friend Sub remove(ByVal tmpKey As key) Items.Remove(tmpKey) End Sub End Class Class Form1 withevents objKeys as Keys ' I want to capture the "valuesReset" event here with the index number of the key type ' bject End Class Now the problem is how can I capture the event "valuesReset" of an key object if I use "withevents objKeys as Keys" in any form/outside class? and if it is possible how can I know which key object inside the collection has raised the event? Thanks In advance :-) Tag: DataTable.Merge() Tag: 129371
  - 20
    - How to capture Item's event through an object of its collection in a external class? There are two classes 1) Key - contains some public variables, one method "Reset" and one event "valuesReset" which is raised by Reset method. 2) Keys - this class is collection of objects of class 'Key' and it is inherited with ReadOnlyCollection(Of key). I'm pasting the code here Class key Public Event valuesReset() Public _name As String = "" Public _title As Integer = 0 Public _strong As Integer = 0 Public _italic As Integer = 0 Public Function reset() As Boolean _name = "" _title = 0 _strong = 0 _italic = 0 RaiseEvent valuesReset() End Function End Class 'Collection of key Class keys Inherits ReadOnlyCollection(Of key) Friend Sub New() MyBase.New(New List(Of key)) End Sub Friend Function add(ByVal tmpKey As key) As Integer If Items.Contains(tmpKey) Then Return Items.IndexOf(tmpKey) End If Items.Add(tmpKey) Return Count - 1 End Function Friend Sub AddAt(ByVal tmpKey As key, ByVal index As Integer) If index < 0 OrElse index > Items.Count - 1 Then Return End If If Contains(tmpKey) Then Return End If Items.Insert(index, tmpKey) End Sub Friend Sub Dispose() For i As Integer = Count - 1 To 0 Step -1 Me(i).reset() Next End Sub Friend Sub remove(ByVal tmpKey As key) Items.Remove(tmpKey) End Sub End Class Class Form1 withevents objKeys as Keys ' I want to capture the "valuesReset" event here with the index number of the key type ' bject End Class Now the problem is how can I capture the event "valuesReset" of an key object if I use "withevents objKeys as Keys" in any form/outside class? and if it is possible how can I know which key object inside the collection has raised the event? Thanks In advance :-) Tag: DataTable.Merge() Tag: 129370
  - 21
    - Custom control loading order Hi, I have a custom control which loads data, with some critera from a property of the hosting UserControl. I try to get the property value on BindingChanged in my custom control, but, at that time, host UserControl is not completly loaded, so my property is NULL. I can't call a custom control's method from host UserControl. It would 'destroy' the automatic behaviour... How can I know in my custome control that the host UserControl has finished to load ? TIA Tag: DataTable.Merge() Tag: 129361
  - 22
    - Build "Release" for asp.net website I build a website solution by using visual studio 2005, how can I build the "release" version, because I just find the "debug" in the IDE and it seems it's necessary to append the configuration manually. -- ISAMUSETU Tag: DataTable.Merge() Tag: 129350
  - 23
    - why use .net? Hi there, We need to retrospectively justify our choice in using .NET framework for developing our site. Our techie isnt here so we cant run it past him. Can some kind, helpful person run their eye over it and tell me if I'm tellling porkies, or if there is anything I should add? Why should people choose .net (I think ours is 1.1) Thanks Gay ****************** We recognised that in order to meet our aims of producing a high quality and consistent website, we had to ensure that our system was fast, robust and able to deal with a high number of users. We chose .NET framework so that we could meet these needs now, but also so that we could best account for any future developments in a cost effective manner. This has proved the case, in that with our Stage 2 developments we will be implementing a forum system. Using .NET has meant that we can integrate new modules with ease. With .NET's cross-platform interconnectivity, we feel that we have chosen the best approach for future-proofing. Tag: DataTable.Merge() Tag: 129346
  - 24
    - What can we do in C#.net with a given window handle? Hello, friends, What can we do in C#.net with a given window handle? For example, can we activate or close this window? How? Any reference papers? Thanks a lot. Tag: DataTable.Merge() Tag: 129344
  - 25
    - Piped input contains Unicode preamble I'm an old dog and I like old tricks, so I write a lot of utilities that accept piped input. e.g. TYPE mydata.txt | MyApp or MyApp < mydata.txt or App1 | App2 Then read the input with System.Console.In What I found though is that if the input file contains a Unicode preamble (i.e. EF BB BF for UTF-8) the preamble appears in the data, which is inconvenient. I'm not real interested in _why_ this is the case, but I wonder what others do to resolve this. So far, because I'm only concerned with "ASCII" text, I simply ignore all characters above 7F, but I'd like a more elegant solution. One other thing I tried was rather than use System.Console.In I tried new System.IO.StreamReader ( System.Console.OpenStandardInput , true ) which worked some times, but other times was missing the beginning of the data (which I assume is due to buffering). Tag: DataTable.Merge() Tag: 129343

I'm a little confused about DataTable.Merge(). I have two DataTable
objects with the same structure - dtOrig and dtCurrent. The end result
I'm trying to achieve is to get all the rows in dtCurrent that are in
some way different from the corresponding rows in dtOrig so those new/
modified/deleted rows can be processed. My idea was to use
dtOrig.Merge(dtCurrent), and then call dtOrig.GetChanges(). But what I
found is that when the preserveChanges Merge() parameter is
'false' (or not supplied) the values in dtOrig do get updated, but the
RowState stays 'Unchanged'. When preserveChanges is 'true' then the
RowState for all rows becomes 'Modified' but the values in dtOrig are
NOT actually updated! What am I missing here? Is there a better way to
go about this? Thanks.

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RE: DataTable.Merge() by pbromberg

pbromberg
Wed May 02 15:09:01 CDT 2007

Depending on "how" you got to your dtOrig and dtCurrent Datatables, the Merge
method may not give you the behavior you are looking for. This page of the
documentation should help clear things up:

http://msdn2.microsoft.com/en-us/library/fk68ew7b.aspx

sorry if dupe, MS' web thang not cooperating today.

Peter
--
Site: http://www.eggheadcafe.com
UnBlog: http://petesbloggerama.blogspot.com
Short urls & more: http://ittyurl.net

"mj2736@yahoo.com" wrote:

> I'm a little confused about DataTable.Merge(). I have two DataTable
> objects with the same structure - dtOrig and dtCurrent. The end result
> I'm trying to achieve is to get all the rows in dtCurrent that are in
> some way different from the corresponding rows in dtOrig so those new/
> modified/deleted rows can be processed. My idea was to use
> dtOrig.Merge(dtCurrent), and then call dtOrig.GetChanges(). But what I
> found is that when the preserveChanges Merge() parameter is
> 'false' (or not supplied) the values in dtOrig do get updated, but the
> RowState stays 'Unchanged'. When preserveChanges is 'true' then the
> RowState for all rows becomes 'Modified' but the values in dtOrig are
> NOT actually updated! What am I missing here? Is there a better way to
> go about this? Thanks.
>
>

Top