Question Framework 1.1 & 2.0

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  - 1
    - 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: Question Framework 1.1 & 2.0 Tag: 113919
  - 2
    - 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: Question Framework 1.1 & 2.0 Tag: 113915
  - 3
    - .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: Question Framework 1.1 & 2.0 Tag: 113910
  - 4
    - 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: Question Framework 1.1 & 2.0 Tag: 113905
  - 5
    - .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: Question Framework 1.1 & 2.0 Tag: 113903
  - 6
    - (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: Question Framework 1.1 & 2.0 Tag: 113895
  - 7
    - 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: Question Framework 1.1 & 2.0 Tag: 113894
  - 8
    - 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: Question Framework 1.1 & 2.0 Tag: 113891
  - 9
    - 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: Question Framework 1.1 & 2.0 Tag: 113889
  - 10
    - test Tag: Question Framework 1.1 & 2.0 Tag: 113888
  - 11
    - 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: Question Framework 1.1 & 2.0 Tag: 113887
  - 12
    - 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: Question Framework 1.1 & 2.0 Tag: 113882
  - 13
    - 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: Question Framework 1.1 & 2.0 Tag: 113881
  - 14
    - 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: Question Framework 1.1 & 2.0 Tag: 113880
  - 15
    - 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: Question Framework 1.1 & 2.0 Tag: 113878
  - 16
    - 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: Question Framework 1.1 & 2.0 Tag: 113876
  - 17
    - 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: Question Framework 1.1 & 2.0 Tag: 113874
  - 18
    - 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: Question Framework 1.1 & 2.0 Tag: 113868
  - 19
    - "unable to write data to transport connection" error Hi everybody. Yes, I know there are a number of posts about this, but many of them have not been answered and of those that have been, I can't find one that exactly fits. I am working in vb.net using a TCPClient object and sending commands to a remote, IP-aware device. All goes swimmingly for a while, then I get the above error. The exception's "InnerException" is a "SocketError", with the message, "An existing connection was forcibly closed by the remote host" It's usually about 5 minutes or so before it gives up. The client who owns the device says another version of our software connects fine all the time, via a serial-to-ip conversion device/program. So it's unlikely to be the device itself, despite the inner exception message. I have tried both send and receive timeouts on the TCPClient - no change. I am at a loss - any ideas out there? TIA, Peter Royle Tag: Question Framework 1.1 & 2.0 Tag: 113864
  - 20
    - System.Configuration.Install.Installer and console I have a Windows service exe that derives from System.Configuration.Install.Installer The exe can be executed from the command line with parameters such as INSTALL, UNINSTALL, START, and STOP to perform such tasks on the service But the exe is also the exe that _is_ the service process, so when it's run with no parameters (by the SCM?) it calls System.ServiceProcess.ServiceBase.Run ( srp.ServicesToRun ) ; The problem then is when it's accidently run with no parameters from the command line. Is there some way for it to know whether or not it's being executed by the SCM? I'd like it to be able to give a help message and terminate when it's run from the command line while still behaving properly when running as a service. Tag: Question Framework 1.1 & 2.0 Tag: 113863
  - 21
    - Copying a flash mem card, including boot sector. Is there a .NET framework call that will make an exact copy of the contents of a disk, including the boot sector if there is one? What I have is a Windows CE device that boots from a compact flash card. This device goes out to customers, where it runs a machine for them. I want to make a utility that will allow them to back up and restore their system. I know how to copy the files and directories from a disk, but that doesn't result in a new, bootable, disk. I could tell them to use Norton Ghost, and that would work just fine, but I have already created a utility for managing the information on that disk. It's a C# .Net framework 2.0 application. I would like to add a "make backup disk" button to the menu of that utility, but I don't know how to copy the boot information. Tag: Question Framework 1.1 & 2.0 Tag: 113861
  - 22
    - Using ManualResetEvent within a ContextBoundObject For some reason, I tried to create an instance of the ManualResetEvent class from the constructor of a class that derives from ContextBoundObject (for automatic synchronization purposes), and after the call to "new ManualResetEvent(false)" the watch window shows "undefied value" / null for that instance, altough a call to Debug.Assert(event != null) doesn't assert! Moreover, when I try to call Set on the event, an exception is thrown (can't access a disposed object or something like that), even though I didn't dispose of the event. Is there a special problem regarding the use of ManualResetEvent in ContextBoundObjects? What is the reason for this? Thanks. Tag: Question Framework 1.1 & 2.0 Tag: 113858
  - 23
    - Loading method on runtime I am storing method names in one xml file , on run time i read method name for ex class1.Method1 , I want invoke this method is there any facility in system.reflection to load the methods like we load assemblies using assembly.load. I would have instantiated the class before reading xml , Is there any way I can load method on runtime. Thanks in Advance Sudheendra Tag: Question Framework 1.1 & 2.0 Tag: 113855
  - 24
    - INSERTing long TEXTs into MSSQL 8.00.2039 Hi, I have a table with columns of types datetime, varchar, text, text, text, text. The text columns will contain XML documents, there is no primary key in the table but they varchar column contains foreign keys. If I insert trivial text values like "hello" everything works fine but when I use real XML documents weird things start to happen. The row gets inserted with no error message but when I view it in enterprise manager the particular column that was supposed to contain the XML document is empty (the datetime and all text columns with trivial values like "hello" or "world" is correctly displayed). After some experimentation I noticed that it appears to be the length of the text field that determines whether that column will get a value or not. For text values of length 900 chars and shorter it's no problem, but for text values with a length of 901 chars that column will not be set but instead empty. The actual content of the long text value does not matter, I tried to insert a 900 char string of the letter "c" only and that worked, while 901 consecutive "c" chars causes the row to be inserted with a empty value where the string of "c"s should have been. My question is, how can I insert TEXT values longer than 900 chars? I know this datatype should handle alot longer values... FWIW; I'm using MSSQL 8.00.2039 and I'm doing the INSERTs using standard .NET component (ver 1.1) such as SqlConnection and SqlCommand. regards, martin Tag: Question Framework 1.1 & 2.0 Tag: 113850
  - 25
    - callback supplied to Socket.BeginSend never gets called Iâ??m having troubles with socket async operations using .NET 2.0. Sometimes a callback supplied to Socket.BeginSend never gets called. I suspect this can be caused by AVG Antivirus or MS AntiSpyware running on the PC, because if I suppress them, everything goes fine. Unfortunately, I was unable to reproduce the issue in isolated environment as the problem has been reported by one of our customers who experiences it in irregular way. Iâ??ve only managed to track it down to Socket.BeginSend and the callback using our logging system. Is it a known issue with Socket in .NET 2.0? Is there a fix to solve this problem? Thanks in advance! Any help would be highly appreciated. Tag: Question Framework 1.1 & 2.0 Tag: 113846
- Next
  - 1
    - Generic Lists Desing Issue Generic Lists are great! But I think you missed a opportunity. Here is my problem. I made a Collection "Family: List<Person> " which will contain 'Family'. I wanted to override the Add method so you can only add persons whose Parents or Childeren are already in the list, but the Add method is not virtual! The Add method of Arraylist is virtual and I see no reason for the generic counterpart not to be. My work around is to create my own GenericList that has a private List<T> and duplicate all IList<T> members and make them virtual, but still it should have been there all along. I see no reason why List<> or all other generic collections have no virtual methods, is there? Maybe speed, but that wasn't an issue with ArrayList so it shouldn't be with generic collections either. Tag: Question Framework 1.1 & 2.0 Tag: 113842
  - 2
    - C# code needed to open the windows "Open with" dialog Hi All, I need C# code needed to open the windows "Open with" dialog Regards, Shilpa Tag: Question Framework 1.1 & 2.0 Tag: 113834
  - 3
    - Threading problem in local COM server We have defined a COM object in C# on the .Net platform (v2.0.50727) in an out-of-process server (.exe). This COM object, in one of its methods, creates a WebBrowser control (AxSHDocVw.AxWebBrowser). The main application can successfully create an instance of this object, but when trying to call the method creating the WebBrowser control, an exception is thrown stating that System.Windows.Forms: ActiveX control '8856f961-340a-11d0-a96b-00c04fd705a2' cannot be instantiated because the current thread is not in a single-threaded apartment. The Main() function in the COM server has the [STAThread] attribute set, and we checked that this thread actually runs in a single thread appartment. The constructor of the COM object is also called on this thread, in STA. The method creating the web browser control, however, is called on another thread, which indeed runs in MTA. We did not create this thread, nor did (willingly) specify somewhere that a thread should be created, and so we do not have control over the apartment of that thread. I don't know whether it is relevant, but the class factory of the COM object is registered with the flags CLSCTX_LOCAL_SERVER, REGCLS_MULTIPLEUSE, after which the Main() function goes on to accept COM requests by calling System.Windows.Forms.Application.Run (); I'd be very grateful for any clues or hints. Jeroen Tag: Question Framework 1.1 & 2.0 Tag: 113833
  - 4
    - Decimal/Single/...: which Numeric-type to use? Hi, I'm having some troubles with my numeric-types in my VB.NET 2005 application, together with a SQL Server 2000. - I first used Single in my application, and Decimal in my database. But a Single with value 4.475 was converted to a Decimal with value 4.4749999999999996D. So after inserting and selecting it from the database I got another value than the original! - So I used also the Decimal in my application, but now all my numbers are formatted with all the decimals: when my value is "1", it shows "1.0000". A single value roudns it nicely to 1, but the decimal value shows the whole decimal part, even when it isn't needed. What I need is: the users should only see the decimal part when needed, AND my values have to be the same (no 4.475 to 4.474999999999 changements). This seems such a simple and basic need, but I just keep having troubles with it :-( What should I do/use? Another numeric datatype in my application? Another datatype in my Database?? Any help/hints/links/information would be really appreciated! Thansk a lot in advance, Pieter Tag: Question Framework 1.1 & 2.0 Tag: 113832
  - 5
    - for some reason when i deploy my C# application on windows 2003 occasionaly rdr[0].ToString() hangs where rdr is a System.Data.SqlClient.SqlDataReader. Is there a fix for this? is my visual studio.net out dated? for some reason when i deploy my C# application on windows 2003 occasionaly rdr[0].ToString() hangs where rdr is a System.Data.SqlClient.SqlDataReader. Is there a fix for this? is my visual studio.net out dated? Tag: Question Framework 1.1 & 2.0 Tag: 113829
  - 6
    - WebRequest & proxy problem In my auto-update code I donwload some files from the net with a WebRequest. Some people having a proxy server reported problems. IN a previous application I set the WebRequest wr = ....; wr.Proxy = WebProxy.GetDefaultProxy(); Which read proxy info from internet explorer. Great, exactly what I want. But this method is now, in 2.0, apparemtly obsolete. What could I use? I read somewhere that someone suggested WebRequest.DefaultWebProxy, but that's crazy, why set it if it's the default already? I saw also the NetSectionGroup.DefaultProxy propery. So now, what should I do? Problem is I cannot test, we are not using proxy here .... :S and I don't really know they work.... Tag: Question Framework 1.1 & 2.0 Tag: 113826
  - 7
    - are System.Data.SqlClient.SqlConnection thread safe? can many threads share a System.Data.SqlClient.SqlConnection instance without any synchronization? are System.Data.SqlClient.SqlConnection thread safe? can many threads share a System.Data.SqlClient.SqlConnection instance without any synchronization? Tag: Question Framework 1.1 & 2.0 Tag: 113823
  - 8
    - C# code to open a windows directory Hi All, I need the C# code to open a windows directory. Regards, Shilpa Tag: Question Framework 1.1 & 2.0 Tag: 113821
  - 9
    - Process.Start() throws an error saying "Setup error: failed to load resources from resource file Please check your Setup" Hi, I have a .NET Windows Forms application, written in VB.NET and C#. [.NET runtime version: 1.0; Operating System: Windows XP.] I am opening a URL from the application using Process.Start(). The URL points to a java servlet running on apache-tomcat. For some users the application shows an error dialog with following information. Another very interesting observation is that it's sending a lot of requests to the servlet within no time. Please note that this is not happening for all users. -------------------------------------------------------------- Setup error -------------------------------------------------------------- Failed to load resources from resource file Please check your Setup. --------- OK --------- Can anyone let me know what is going wrong here? Thanks, Vijay Tag: Question Framework 1.1 & 2.0 Tag: 113819
  - 10
    - Identify a file type and open the file Hi All, I want to write C# code to identify a file type and open the file in the associated editor. For example, text files should be identified and opened in notepad, html should be opened in internet explorer/netscape/mozilla. At design time, I do not know if internet explorer/netscape is installed on the client machine. The C# code should identify that and open. Please help. Regards, Shilpa Tag: Question Framework 1.1 & 2.0 Tag: 113817
  - 11
    - Page state on postback Hi, This is a pretty straightforward question about postback, etc. in C# ASP.NET. I have 3 DropDownLists, each is bound to a SQL DataTable, created from 3 SQL queries. If the user makes a selection from a DropDownList, an auto-postback event is triggered. But, the DataTables, which are members of my Page class, become null on the postback. I don't want to lose that DataTable information. There's more info in the DataTables than the DropDownLists, which is why I want to keep them around. So, does this mean I need to recreate the DataTables somehow and rebind , such as repeating the SQL queries and rebinding, or serializing the data somehow? I'm just trying to figure out the limits of what .net does for me. Is it limited to setting the state of controls on postback? I'm aware of how Session["var"] and ViewState["var"] work, I just wanted to see if I'm overlooking something, like some trick to keep variables in the Page class around between postbacks. At this point it seems like caching the SQL queries to recreate to DataTables is my best bet. Lemme know if I'm missing something. Thanks in advance Tag: Question Framework 1.1 & 2.0 Tag: 113816
  - 12
    - Can't cancel the validation when the control lost focus to a userc I have problem with a control when its causesValidation property is set to true. It is actually happens in .NET Framework 1.1. When I lost focus from this control to another control within a user control by clicking the target control, I can't really cancel the validating event. It won't happen if I move the focus to other control within the form, or within the same container of the source control. another different behavior when the application is ran in Terminal Server. + Steps to Reproduce: Let say the source control is a textbox and the target control within a usercontrol is a checkbox. When I click the checkbox, the checked value is changed and so does the validating event of the source control. So, the focus remains in the source control, but the target control is excecuted too. Sample application is in: http://www.geocities.com/dikhi/downloads/WindowsApplication2.zip + Actual Results: In Windows XP: The focus remains in the textbox, but the checked value of the checkbox is changed. In Terminal Server: The focus is moved to the target control. + Expected Results: In WIndows XP: The focus is still in the source control (already correct), but The target control (checkbox) shouldn't change its checked value. In Terminal Server: The same as the Windows XP Many thanks in advance. Tag: Question Framework 1.1 & 2.0 Tag: 113814
  - 13
    - NetworkStream with CryptoStream help Hi all, I've some problems using NetworkStream with CryptoStream. I create a simple server/client projects and I think the problem is in cryptoStream. If the server sends data using networkStream, the data is sended. But if the server sends data with cryptoStream the send process stops because it needs to feel all the client read buffer. In this way, only closing the socket the message is sent. If the client buffer is small the server sends the message. The same problem happens in client. If client read using networkStream, no matter what stream server is using to send or the client buffer size, the client receives the message. But if client uses cryptoStream, it blocks. Thanks, -- Andre Azevedo ClientCode: ------------- using System; using System.Collections.Generic; using System.Text; using System.Net.Sockets; using System.IO; using System.Security.Cryptography; using System.IO.Compression; using System.Threading; namespace ConsoleApplication2 { class Program { static void Main(string[] args) { Int32 port = 8080; TcpClient client = new TcpClient("127.0.0.1", port); NetworkStream n = client.GetStream(); Stream write = new CryptoStream(n, new ToBase64Transform(), CryptoStreamMode.Write); Stream read = new CryptoStream(n, new FromBase64Transform(), CryptoStreamMode.Read); while (true) { //byte[] data = new Byte[1024]; byte[] data = new Byte[5]; Console.WriteLine("Receiving!"); read.BeginRead(data, 0, data.Length, new AsyncCallback(ReadCallback), read); //n.BeginRead(data, 0, data.Length, new AsyncCallback(ReadCallback), n); Thread.Sleep(3000); } read.Close(); client.Close(); } private static void ReadCallback(IAsyncResult ar) { try { Stream read = (Stream) ar.AsyncState; int bytes = read.EndRead(ar); Console.WriteLine("Received " + bytes + " bytes"); } catch (SocketException se) { Console.WriteLine(se.Message); } catch (Exception ex) { Console.WriteLine(ex.Message); } } } } ServerCode: ----------------- using System; using System.IO; using System.Net; using System.Net.Sockets; using System.Text; using System.Security.Cryptography; using System.IO.Compression; using System.Threading; class MyTcpListener { public static void Main() { TcpListener server = null; Int32 port = 8080; IPAddress localAddr = IPAddress.Parse("127.0.0.1"); server = new TcpListener(localAddr, port); server.Start(); while (true) { Console.Write("Waiting for a connection... "); Socket client = server.AcceptSocket(); Console.WriteLine("Connected!"); NetworkStream n = new NetworkStream(client); Stream write = new CryptoStream(n, new ToBase64Transform(), CryptoStreamMode.Write); Stream read = new CryptoStream(n, new FromBase64Transform(), CryptoStreamMode.Read); String data = null; //data = "013456789013456789013456789013456789013456789" //50 bytes! data = "0134567890"; // 10 bytes byte[] msg = System.Text.Encoding.ASCII.GetBytes(data); //n.BeginWrite(msg, 0, msg.Length, new AsyncCallback(SendCallback), n); write.BeginWrite(msg, 0, msg.Length, new AsyncCallback(SendCallback), write); Thread.Sleep(2000); write.Close(); client.Close(); } } private static void SendCallback(IAsyncResult ar) { try { Stream write = (Stream) ar.AsyncState; write.EndWrite(ar); } catch (SocketException se) { Console.WriteLine(se.Message); } catch (Exception ex) { Console.WriteLine(ex.Message); } } } Tag: Question Framework 1.1 & 2.0 Tag: 113813
  - 14
    - Dynamically Determining an Objects Property I have an object with 30+ exposed properties. How can I, based on a string input, retrieve the value of a specific property? Here's what I'm doing right now: Function GetField(ByVal FieldName as String) as String Select Case FieldName Case "Field1" Return myObj.Field1 Case "Field2" Return myobj.Field2 END Select End Function There's got to be a better way then this. Is Reflection what I'm after? Tag: Question Framework 1.1 & 2.0 Tag: 113811
  - 15
    - Overriding generic methods - compiler hides wrong method I think there is a problem with the compiler when overriding a generic method in an inherited class. I have a base class with a non-generic method "Foo(string arg)" and a generic method "Foo<T>(T arg)" (identical names). Now I create a new class that inherits from that base class. In this class I override the generic Foo<T> method (using "new"). If I make a call from the inherited class to this.Foo("abc") (which should invoke the non generic method in the base class, as that method is not overridden), something strange happens: Not the non-generic method in the base class, but the generic method in the derived class is invoked. The problem only occurs if I hide a method using new. If I override a virtual method, everything is fine. To clarify, consider the following 3 classes and the comments behind the code with the strange behavior: public class Base { public Base() {} public int Foo(string arg) { return 1; } public bool Foo<T>(T arg) { return false; } public bool Boo(string arg) { return true; } public bool Boo<T>(T arg) { return false; } } public class Derived : Base { public Derived() :base() {} public new bool Foo<T>(T arg) { string s = ""; int i1 = this.Foo(s); // Does not compile (expects bool) ! int i2 = base.Foo(s); // OK (calls Base.Foo(string arg)) int i3 = ((Base)this).Foo(s); // OK (calls Base.Foo(string arg)) return base.Foo<T>(arg); // OK (calls Base.Foo(T arg)) } public new bool Boo<T>(T arg) { string s = ""; bool b1 = this.Boo(s); // StackOverflowException (calls Derived.Boo<T>(T arg)) ! bool b2 = base.Boo(s); // OK (calls Base.Boo(string arg)) bool b3 = ((Base)this).Boo(s); // OK (calls Base.Boo(string arg)) return base.Boo<T>(arg); // OK (calls Base.Boo<T>(T arg)) } } public class Derived2 : Derived { public Derived2() : base() {} public new bool Foo<T>(T arg) { string s = ""; int i1 = this.Foo(s); // Does not compile (expects bool) ! int i2 = base.Foo(s); // Does not compile (expects bool) ! int i3 = ((Base)this).Foo(s); // OK (calls Base.Foo(string arg)) return base.Foo<T>(arg); // OK (calls Derived.Foo(string arg)) } public new bool Boo<T>(T arg) { string s = ""; bool b1 = this.Boo(s); // StackOverflowException (calls Derived2.Boo<T>(T arg)) ! bool b2 = base.Boo(s); // StackOverflowException (calls Derived.Boo<T>(T arg)) ! bool b3 = ((Base)this).Boo(s); // OK (calls Base.Boo(string arg)) return base.Boo<T>(arg); // StackOverflowException (calls Derived.Boo<T>(T arg)) ! } } Is this a bug or a wanted feature? Thanks in advance for helping. Tag: Question Framework 1.1 & 2.0 Tag: 113810
  - 16
    - DataGrid on Update does not pass back values via e.Item.Cells[] I am creating a generic DataSet update interface in VS 2003/ASP .NET. I have an DataGrid that has AutoGenerateColumns = true and set whatever DataSet i was to modify as the DataGrid.DataSource. Viewing, Editing and Cancelling work, Updating values after an Edit does not. When I click the Update button on the DataGrid, the UpdateDataGrid event fires. In the Update DataGrid function i loop through the e.Item.Cells[] and attempt read out all the values from the Controls. (eg. ((TextBox)e.Item.Cells[i].Controls[0]).Text) For some reason all the Controls values are the empty string ("") even though i updated the information on the web front end. What could be causing all my Control values to be empty? Also, e.Item.Cells[i].Controls[0] is of type System.Web.UI.WebControls.TextBox. Thanks Tag: Question Framework 1.1 & 2.0 Tag: 113809
  - 17
    - GSSAPI bindings for C#/.NET All, I was able to find an IETF document proposing some specifications for GSSAPI C# bindings (http://www.ietf.org/internet-drafts/draft-ietf-kitten-gssapi-csharp-bindings-00.txt), but I was unable to find any suitable implementation. The goal is to use MIT Kerberos to authenticate to remote services. Anyone have any pointers on this? I'm beginning to feel like the best bet will be to P/Invoke the MIT Kerberos libs to do this, but it seems like a pure .NET implementation would obviously be preferable. There are some Novell-namespaced classes in the most recent mono class sources that seemed to bear some resemblance to these IETF bindings, but these just seemed to reference Java classes to provide the actual implementation. Further to this, is it possible to use some facilities of the System.DirectoryServices namespace to communicate with remote kerberized services without your KDC being AD? Thanks, Ian Tag: Question Framework 1.1 & 2.0 Tag: 113807
  - 18
    - Viewing Data from a DataSet Hello, I have a DataSet that was returned to me by a QueryMethod( ). I have drilled down to the column level as follows: Dim ds As System.Data.DataSet Dim dt As System.Data.DataTable Dim dr As System.Data.DataRow Dim dc As System.Data.DataColumn ds = QueryMethod ( ) For Each dt In ds.Tables For Each dr In dt.Rows For Each dc In dt.Columns if dr(dc) = "owner" then ' GET THE DATA IN THE COLUMN OF A ROW OF A TABLE end if Next dc Next dr Next dt Am I using the right approach. Thanks for any replies. Tag: Question Framework 1.1 & 2.0 Tag: 113806
  - 19
    - Does clickonce work well? Any disadvantages? We have an ASP.NET web application that gets installed on a server in a hospital and then any computer throughout the hospital's network can access the application. I prefer Winforms applications to ASP.NET, so I am thinking that we should replace our current one with a Winforms application distributed through clickonce. What are the disadvantages of doing this? I am having difficulty convincing my coworkers that clickonce will distribute just as easily as a web application. It seems to me that the major disadvantage is that the client PC has to have the .NET framework on it, which won't be the case in general. Does clickonce work really easily in general? I scanned newsgroups to see a bunch of people having deployment problems of one type or another with it. thanks in advance Tag: Question Framework 1.1 & 2.0 Tag: 113805
  - 20
    - Different execution behavior between .Net1.1 and .Net2.0 I have a library that reads PDF file and manipilates its content. And I use SharpZip library to decompress the streams included in PDF file. All well and good. I have 3 lines of my test code that takes a PDF file and spits out the required content from the file. It all works fine in .Net.1. environment. Now I wrote the same 3 lines of code in .Net2.0 console test application and use the assemblies for PDF library and SharpZip compiled with .Net.1.1. The application will throw exceptions in the deflate algorithm "Index out of bound". Then I tried to replace the SharpZip decompression code with DelateStream class in .Net2.0 framework, recompiled pdf library and sharpzip assemblies with .Net2.0. But still no luck. Is there something I am missing in this whole equation of using my 1.1 libraries with .Net2.0 application? Thanks Tag: Question Framework 1.1 & 2.0 Tag: 113801
  - 21
    - Interview Questions March 21, 2006 Web services and Remoting Interview questions http://www.questpond.com/WebServicesAndRemoting.zip Database optimization interview questions http://www.questpond.com/DatabaseOptimization.zip .NET Basic frame work interview questions http://www.questpond.com/FrameWorkSampleInterviewQuestions.zip Interop and COM interview questions http://www.questpond.com/InteropdotnetInterviewQuestions.zip Caching Interview questions http://www.questpond.com/CachingInterviewQestions.zip Full Interview Questions for .NET and SQL Server http://www.geocities.com/dotnetinterviews/ Help the community to make job search easier mail your questions to jobatyourdoorstep@yahoo.co.in Looking for a onsite job mail your resumes at jobatyourdoorstep@yahoo.co.in Tag: Question Framework 1.1 & 2.0 Tag: 113797
  - 22
    - Regex help I want to generate a usable filename (no path, drive letter, or extension) from strings from various sources (dates, database fields, user entry, etc). I'm trying to use the following line and regex to replace any invalid characters with an empty string. However, it doesn't work. I've tested the expression with RegExBuddy and it says it is fine and does what I want. I am aware of some bugs in the .Net Framework 1.0 regarding regex, but this is a 1.1 application. Any help would be appreciated. Regex.Replace(FileName,"[^\\w$%_@~`!(){}^#&-]*",string.Empty); Bryan Tag: Question Framework 1.1 & 2.0 Tag: 113794
  - 23
    - How to disable IpV6 in Windows Mobile 2005 I know this is not the correct group for this question, but i could not find any one that was suitable. Anyway my question is how do I disable IpV6 support in a Windows Mobile 2005 device (and in WinCE 5.0 in general)? If anyone could point me to a WinCE/Window Mobile newsgroup I would be thankful. Tag: Question Framework 1.1 & 2.0 Tag: 113793
  - 24
    - CppCodeProvider.dll CompileAssemblyFromSource() throws a "not implemented" Hi, I'm using CppCodeProvider.dll in a CLI/C++ application and I simply can't make it work with CompileAssemblyFromSource() or any other functions. Is there something special for C++ that I need to do that I don't need for the other languages, or is this just broken? Kind Regards=20 Cl=E1udio Albuquerque Tag: Question Framework 1.1 & 2.0 Tag: 113792
  - 25
    - How do I add existing visual Item to a project Hello!! Normally I use C# but we have a project that is creating a window control library DLL that is done in C++.NET and that is here I have some problems that I want to solve. To be able to understand my question fully, I do the following. 1. Create a project that is a WindowControlLibrary called Test in C++.NET in this project we have several files but the following are intresting for me. Under Source Files we have a file called TestControl.cpp Under Header Files we have a file called TestControl.h and if you expand this file you can see TestControl.resX. 2.Open View Designer for TestControl.h and add for example a button. 3. Everything works as it should so far. 4. Now delete file TestControl.cpp and TestControl.h from the project Test. When file TestControl.h was deleted, file TestControl.resX was also deleted because it was connected to TestControl.h 5. The files still exist in folder Test but does not exist in project Test. 6 Now assume that you want to add these files(TestControl.cpp, TestControl.h and TestControl.resX) back into project Test again. 7 I have tried different variation for Add Existing Item for my three files to project Test but all my attempts failed in the way that I can never open View Designor. 8 So how do I do if I want to add an existing visual control like the TestControl. 9 It works perfectly to add new Item which I do in this way click on Source File and select add New Item and choose for example User Control. //Tony Tag: Question Framework 1.1 & 2.0 Tag: 113790

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????

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Re: Question Framework 1.1 & 2.0 by chema012

chema012
Thu Mar 23 13:43:30 CST 2006

Hello, Mat=EDas:

You can read this articles:
Side-by-Side Execution
http://msdn2.microsoft.com/en-us/library/8477k21c(VS.80).aspx

In particular:
How to: Use an Application Configuration File to Target a .NET Framework =
Version
http://msdn2.microsoft.com/en-us/library/9w519wzk(VS.80).aspx

Regards.

"Mat=EDas" <preguntamelo@hotmail.com> escribi=F3 en el mensaje =
news:%23VEEl4qTGHA.6084@TK2MSFTNGP14.phx.gbl...
| If I have installed both versions of the framework, can I say to may=20
| application use 1.1 or 2.0 or when I run the applicacion will use the =
higher=20
| version????=20

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Re: Question Framework 1.1 & 2.0 by Thomas

Thomas
Fri Mar 24 03:21:19 CST 2006

Hi,

an other related question:
can I say the 2005 C# compiler, that the compile have to use the .Net
Framework 1.1 instead of 2.0?

Thomas

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Re: Question Framework 1.1 & 2.0 by Morten

Morten
Fri Mar 24 03:45:11 CST 2006

Hi,

You can't create 1.1 or 1.0 applications on Visual Studio 2005 out of the
box, but you can use the MSBuild Toolkit. Not sure if it is currently
available or if you have to wait till April to get the new version.

http://www.longhornblogs.com/robert/archive/2005/06/03/14156.aspx
http://weblogs.asp.net/rmclaws/archive/2005/06/04/410360.aspx

--
Happy Coding!
Morten Wennevik [C# MVP]

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