Is it possible to programmatically click (and make node checked also) on the desired treeview (System.Windows.Forms.TreeView) node. I.e. pseudo code: myTreeview.Nodes[0].Click(); This code has to trigger the treeview AfterCheck event. Thanks in advance Sanjin ...more >>

I have an app which I deployed last week. If I make a change to the app and it only affects changes to existing code. what I mean by that no new projects/dlls, no new controls etc. What do I need to copy up to the deployement site, just the new .exe? Bill ...more >>

Hi! I'm having some trouble with BackgroundWorker objects and making some "heavy" work that is *not* supposed to be in the progress bar dialog itself. I basically want to do something like this: ProgressForm form = new ProgressForm(); form.Show(); // ... Do heavy work here ... form.Upda...more >>

Hello I'm trying to draw a PictureBox with an image of size 40000 x 200 pixels. Because the image width is larger or equal to 2^15, drawing the image will crash. Code snippet: Bitmap bmp = new Bitmap(40000, 200); pictureBox1.Image = bmp; Exception Text: System.A...more >>

I'm writing a Winforms program in VB, Dot Net 2.0. I have a datagridview on a form and I've defined a column as a DataGridViewLinkColumn. (I have the usual programmer's problem. I am not sure what sort of machines this code will run on so I am shooting for the lowest common demoninator.) ...more >>

I need to create a method to set focus on first control in a windows form How i can do it?...more >>

Hi there, I would like some advice in how to go about creating a plug-in type windows form architecture, this is what i had in mind: a form similar to windows explorer with the grouped navigation items on the left, each group in the left nav section will represent a plug- in application wit...more >>

Hello, I just implement a custom control that extends from DataGridView, every cell has different background. I found a problem, for now it seems to be erasing background incorrectly after selecting a cell, when switch to different application(hit Alt+Tab) and then once more to back. The back...more >>

In Webforms, I can access the user's network login (windows authentication) by: User.Identity.Name What is the Winforms way of doing this? ...more >>

I am new to C#, but not new in programming. I am trying to add a Login form to a test Win forms application. Somewhere in the internet I found a post suggesting using LoginDlg, I added the code provided LoginDlg ld = new LoginDlg(); ld.ShowDialog(); but I am getting...more >>

Hi all Firstly, sincere apologies for cross posting this, I did post on the DataBinding forum but the traffic there is very low so I'm not confident of a reply. Anyway, I'm trying to put together a method to loop through all controls on a form and see if any of them are databound. For...more >>

We recently converted our .Net 1.1 app over to 2.0 and now our transparent forms are behaving differenctly. I was hoping someone might be able to shed some light on this issue... We have a windows form that is transparent. We set the background image to be a gif image that contains a transp...more >>

I've come across a problem with the Webbrowser control that I am hoping some of you folks might be able to help me with. FWIW, I am using VB.Net in Visual Studio 2005. On my company's website, we have a situation where a new window is opened (in this case, we actually use ShowModalDialog to...more >>

I need to play multiple sounds (.wav files) simutaneously in my windows forms application. I have already taken a look at System.Media.SoundPlayer class. I tried the following but it didn't work: - Create two instances of SoundPlayer. - Called PlayLooping on the first one to play fil...more >>

Hi there, I need to start my Windows Forms application without showing the form initially. Then at some point, the application will be signaled to generate and display the user interface. I'm trying to use Application.Run() without parameters. Since this method doesn't return I start a separa...more >>

I am working on a program where I need 2 things to happen at the same time. The form needs to load and at the same time I want to start a timer which after a certain amount of time kills the entire application. The user has to click submit on the form within 2 minutes, or else I want somethi...more >>

I just recently converted a VB 2003 project to VB 2005. The project compiles and runs fine but whenever I try to view any forms in the designer I get a "Object instance not set" error. If I create a new Form I can view it fine though, the issues is only with pre-existing forms. I also conve...more >>

I'm a little confused about using Control.Invoke with an anonymous method. It seems like the compiler is able to generate whatever glue code is necessary to turn an anonymous method into a delegate type in several situations, such as starting a thread: Thread workerThread = new Thread(dele...more >>

I'm trying to install a .net 2.0 smart-client application that uses the "click once" deployment method in a Citrix environment. If we log in as the admin on Citrix, we are able to install the application, but when we use a "normal" account that has very few privelages, we get the following ...more >>

I created a windows form control that inherits from the standard .Net DataGridView control, to which I've added custom functionality. Instead of using the standard control in my applications, I use my customized version. I have an event handler in the custom control for the KeyDown event that si...more >>

Is there anyway to detect when the user has clicked the red X button to exit an application (as opposed to triggering some other event which runs code which sends the Close() message to the form? I know I can use the CloseReason property of FormClosingEventArgs but that shows UserClosing wheth...more >>

Hi Everyone, How to show only year on UI using VS DayTimePicker in C#. Looking forward for your response. Thanks Sandy ...more >>