Hello, I'm in the process of writing a managed c++ wrapper class to use existing unmanaged C++ code. So I have to deal with custom marshaling. Given a StringBuilder, I need to produce a LPTSTR to call unmanaged code, and get back a modified StringBuilder on return. How Can I safely access the ...more >>

Hi all. .Net 2.0. It seems the DataAdapter.Update Method changes the RowState of child records to 'Modified' when updating them through a Relation. If the child records' .RowState is "Added" or "Deleted," shouldn't they STAY that way? Otherwise when you try to update the child table, you...more >>

I'm trying to use the System.IO.FileSystemWatcher class in code like... using (FileSystemWatcher changeMonitor = new FileSystemWatcher(".")) { for (; ; ) { WaitForChangedResult c = changeMonitor.WaitForChanged( WatcherChangeTypes.Created, 60 * 10...more >>

Hi all. Using Dot Net 2.0. I have a typed dataset generated by VS. It contains a parent and a child table with a relationship set up in the MSSQL database and showing in the dataset. _Both_ tables have new records that need to be added to database. I'm able to retrieve the server's autoin...more >>

Hi, One of my application has <identify impersonate = true> in web.config. I have given my user name and password in machine.config. When i tried to access the application used to work perfectly. But 'Server Application Unavailable' error is coming when the password contai...more >>

Hi, i am looking for free video tutorials to learn the following: A.) Dot.Net Framework (Class Library) overview, Development Tools overview, general technology overview B.) Learning Dot.Net Programming B.) Learning to use Visual Studio in general and for Dot.Net Programming C.) How to conne...more >>

I am interested in a sample in C# (or any .NET) that shows the bare bones of doing CreateFileMapping, et al. to share an existing file between two or more processes on the same workstation. Any help would be greatly appreciated. Brian Hough ...more >>

Hi I'm currently developping a skinnable form by using a borderless form (Form.FormBorderStyle=None). Is it the right way to go in the first place? if it is. Assuming that when there is no border to the form there is no context menu when you right-click on your form in the start bar too (the ...more >>

Quando verranno proposte le nuove certificazioni per il nuovo framework? ...more >>

I wonder if it is threadsafe to have a Shared Function or Sub like this: Public Class Data1 Public Shared Function Query1(Byref sCnxn as String, Byval sSql As String) As DataTable Dim oCnxn As New SqlConnection(sCnxn) Dim oCmd As New SqlCommand(sSql, oCnxn) Dim o...more >>

If I upgrade to framework 3.0 and install Studio components for 3.0, will I still be able to create apps for the 2.0 platform exclusively? Meaning, if a client has 2.0 framework installed on their machine, can I provide a 2.0 (only) Winform app? Thanks, Brett ...more >>

Hi, is there an debugger step over attribute that I can use on properties? For instance, I have a singlton class with an "Instance" property: public MyClass Instance { get { if (m_instance == null) { m_instance = new MyClass(); } return m_instance; } } It's annoyi...more >>

I need to activate an Internet dialup connection from a .NET application; how can this be done? Thanks Massimo ...more >>

Sir/Madam, After set the session mode="StateServer" in the Web.config I get follow error, Unable to use session state server because this version of ASP.NET requires session state server version 2.0 or above. within the services, the ASP.NET State Service is pointed to C:\WINDOWS\Micr...more >>

I have a class that inherits from NameObjectCollectionBase. For simplicity, the collection is called reports, and the individual objects in the collect are called report items. Each report item has a property called .value that throws an event everytime the value changes. What I would like to...more >>

Hi there, I have a class with a static method, how can I find the namespace of the class from inside the method. TIA...more >>

I've posted this question in 'microsoft.public.dotnet.framework.compactframework' as well, but despite the great help I still haven't solved the problem. So before going the C++ route I would like to see if anybody in this group may have the answer. What I'm trying to do is change the route t...more >>

Sorry if this is the wrong news group for this post. I have some large disk files (15-20 MB) that are made up of many records of different types and sizes. I use a BinaryReader to process all the data sequentially (i.e. with many reads operations) and load it into my .NET app. I will have...more >>

I am using ClickOnce to distribute a program. It works well except for one detail. When a new version is installed, the program does not initialize properly immediately after the update. The sequence is the user starts the program, is informed a new version is ready, installs it, when it is...more >>

I have a VB .NET app that lets you create a DTS Package that copies data from an SQL Server to a database located in the specified path (it should work with both local and network drives). You can either run the package from within the application or as a Windows service. If I specify a networ...more >>

I have a class library which throws exceptions on errors. I have an exception handler several levels above where the exception is thrown to catch exceptions. When I run the app in the debugger the exception handler is called, however, when running the app outside of the debugger I get the ...more >>

Hi group I am testing the Visual 2005 Express Edition. I have a solution with a few projects (WinForms, and ClassLibrary), the start up projet is MyProject. When i open the solution using visual, MyProject.svhost.exe start imm=E9diately.I cant run my project using debug. i can run using the "...more >>

Ok guys i know this is a stupid question but here goes. I decided tonight was going to be the night to learn this new .net framework 3.0. I downloaded the new release of .net framework 3. I also installed windows SDK & the visual studio plugins for WF,WCF, WPF. Ok my first quest was try resear...more >>

I am having to get involved in writing Browser Helper Objects in Managed Code and to write toolbars and interface the two. Because BHOs have been clasically written in C++ using ATL, most of the discussions are in that arena. Are there any forums or other types of technical exchanges regar...more >>

hi everybody, i am using some attribute for a proerty. could the attribute get some class or property information by itself? i mean, dose the attribute know what the class or property is? and how? thanks!...more >>

Hello all, I have some common classes that I routinely use with all the dotnet projects that I work with. I have these classes in a separate file so that it becomes easy for me to include them into projects. Some of these projects are done in visual studio 2003 and some are in visual stu...more >>

Hi to all :-) I need to know if there is (inside the main .NET framework or available as a library) any TCP/IP implementation which can be run over a serial line. I know the request can sound quite strange, so here are some more elements :-) I'm testing a client/server application which...more >>

For some reason I am getting the following exception when calling Trace.WriteLine(object value): "System.InvalidOperationException: Collection was modified; enumeration operation may not execute." if (Trace.Listeners.Count > 0) { Trace.WriteLine(entry); // line 424 } - Here is the...more >>

I have a service application in C#. If the user double-clicks the service EXE, I want to display a form with options to install or uninstall. In other words, I want: static void Main() { if (invoked by user) { // <-- how to implement this? // display GUI... } else { // invok...more >>

After my Windows service runs for a few days (sometimes 5, sometimes 3), I'm getting the following exception in the Event Viewer: Event Type: Error Event Source: COM+ Event Category: Unknown Event ID: 4786 Date: 10/31/2006 Time: 1:29:50 AM User: N/A Compu...more >>

Is it possible to convert my app which is in Framework 2 to 3 using VS 2005 and release it to customer? What approach must I take? ...more >>

What is the best way? Is there a good article? ...more >>

Hi, all Did not find a .Net Communication forum to post. I am soing a client/server message system and using C#.net socket and Async mode. Pretty much as described in article http://www.developerfusion.co.uk/show/3997/3/ But I have a big issue with this approach and I am not what did...more >>

I am so surprised to find that there is no close notification in socket class. Like OnClose in MFC CAsyncSocket. Any suggestions please ...... ...more >>

Does anyone knows the meaning with KB823140 and KB903886? These articles treat the issue of "Access Voilation" in .NET framework. I have an application developed in C# that sometimes simply dies. No messages, no error codes, no exceptions. A few days ago I got a tip that this might be caus...more >>

In our .NET Framework 1.1 Application that is installed on about 800 PC's we have 5 PC's that has spontaneous NullReference Exceptions (Windows XP & 2000 uptodate) in System.Windows.Forms. We already removed any Crossthread Calls. Reinstalling and replacing the computer hasn't brought us any bet...more >>

Hi, Environment: VB 2005 Professional Both ends, its the application which is doing the functionalities. At the despatch end, We have a text file which is to be compressed and encrypted and sent over to the recepient. At the recepient end, the file is decrypted and then decompressed. Say...more >>

Before printing I create an instance of PrintDocument as Follow (beware, pseudo code) //============================== PrinterResolution pr = new PrinterResolution(); pr.X= 600; pr.Y= 600; pr.Kind = PrinterResolutionKind.High; PrinterSettings printer = new PrinterSettings(); printer.Pr...more >>

Before printing I create an instance of PrintDocument as Follow (beware, pseudo code) //============================== PaperSize ps = new PaperSize(); ps.Kind = PaperKind.A3 ps.Width = 1169; ps.Height = 1654; PrinterSettings printer = new PrinterSettings(); printer.PrinterName = "my pri...more >>

Hi, For some procedures that throws exceptions, I would like to show different messages to the user depending on what type of exception he's getting. For instance this one: when the file is locked, I want a messagebox to tell that the user has to close the file first. Is there a way to i...more >>

Hello all. I have an assembly that needs to be registered on a server for use with SQL Server 2k. Locally I can run Regasm from the VS.NET command window and that's that. But how can I get the assembly registered on the (or any) server? I have the dll, snk...all that, but I can't figure ou...more >>

Okay, I am writing a service that monitors the file system on one of our servers and I can take of that in a cinch. However, I found no properties or methods available to see who the user is that controls the process performing the deletion. I also need to know what application is doing the de...more >>

Is there any way in a combobox to find the index of an item or set the item in a combobox by the value? I know there is a FindString, and a FindStringExact method in the combobox object, but is there anything simmilar or any work around to getting the index of an object or setting the selec...more >>

On our development machines I created some batch file for compiling our web apps. They make use of some environment variables and batch files that visual studio installs. if "%VS80COMNTOOLS%"=="" goto error_no_VS80COMNTOOLS rem set path of aspnet_compiler for the framework in vs80 call "...more >>

In the docs for Thread.Sleep() it appears unless I specify 0 my thread will still use the rest of its quanta (I guess doing nothing useful) as opposed to being suspended right away to allow other runable thread to execute. What's the best way to sleep for a specified amount of time and relin...more >>

..Net 3.0 deployment via Active Directory and Group Policy seems pretty broken to me. The most up to date info I can find is in the RTM SDK under 'Microsoft .NET Framework 3.0 Administrator Deployment Guide'. The script at the bottom of that article ignores the WIC and XPS components of do...more >>

Hello, I got the hotfix from customer support for KB913384. However, when I attempt to install, it says I'm missing the required software. IIS is installed, and I'm running Windows XP Pro SP2 and .NET 2.0.50727.0. It doesn't say what software is missing....more >>

I've been using Outlook Express for my Hotmail account for a long time. Suddenly it isn't working properly. It downloads messages into the inbox fine, but for some reason when I open a message I get the hourglass and no matter how long I wait nothing appears in the body of the message. I tr...more >>

I have a DataColumn, want to derive the DbType. I can do column.GetType() but that's a system type, not a db type. How do I convert it to the corresponding type? Thanks much! Chris B. ...more >>

Using asp.net1.1, I have a property on a control that is an enum. I use an accessor and set it in HTML view. So: public enum Permission { None = 0, Admin = 1, Member = 2, ... } .... public class Lock : System.Web.UI.Control { private Permission perm; [Bindable(true), Category("S...more >>

Hi All.., I have a VB.Net Windows Application.. I need to Run this Exe From Some Other System(Client) and I need to Upload some specified files to the Server System.. Now my doubts are.. 1) Is client-Server concept is Possible in Windows Applications.. 2) Can I pass some arguments ...more >>

I am having a bit of a problem with my ClickOnce Deployment strategy for vb.net 2005 apps. I am working in a plant which has hundreds of thin clients and when I deploy an app using ClickOnce, it asks each individual user if they want to install. When updates are rolled out, it then asks each ...more >>

Hi, I have a shoddily written application that is written in 1.1 that I've ported to 2.0 and now occasionaly I get crashes which I suspect are been caused by exceptions in threads, most likely due to trying to access controls which is now stricter, I know I could just set CheckForIllegalCro...more >>