I have a form with a textbox, an errorprovider, and an Ok & Cancel button.
The textbox cannot be empty when the dialog is dismissed.  The textbox has
its 'CausesValidation' property set to true.  Here is its validation code:
private void tbName_Validating(object sender,

Hi, I draw a series of rectangles --like when you press save button in word,
series of rectangles goes
to bottom-- but all of those appears behind controls such as groupbox,
panel.

I have been looking around Google Groups trying to find out how to
enable background images with System.Windows.Forms.ListView only to
discover most people are having a lot of difficulty. After several hours
hunting around with Lutz Roeder's .NET Reflector I have created an

I have a WinForms application written in C#, in which I am using an
embedded Microsoft WebBrowser ActiveX control. Based on certain
events, I need to open a window from the browser control, something
like (in javascript) -

Brian Pepin has an interesting article at
http://www.urbanpotato.net/Default.aspx/document/970.
The Visual Studio designer works by actually creating instances of objects
on your form. If you have a form with two buttons and a text box, for

I need a UserControl to bind to a DataGrid. The purpose is that it contains
some Icons (+- 4), and, when clicked on it (or the spacebar), the next icon
is shown.
Now my question is: how should I make this Usercontrol? At least I need an

I have an application which displays a dialog box (Dialog A). When you press
the close button I want to open a new dialog (Dialog B) and close the first.
But the dialog A is not closed immediatelly. Only after you close dialog B,
dialog A is closed. How is this possible?

I am having a TreeNode[] which represents my TreeView. How can I sort it
simply?
Anyone an idea?
Regards,

I have created a vb.net application setup.
The setup creates a short cut of the application in the desktop.
When i run my vb.net setup in windows 2003 machine with the following steps,
i got error.

  I am trying to pass a Window Handle to a Win32 dll function...but I
sometimes get NullReferenceException...this is usually the first time
I start my application...here is the sample code...
MyControl: Control

I need to create a lot of instances of WebBrowsers (let's try 100) and store
that in a WebBrowser[] array according my following code, using Visual
Studio 2005 Beta.
private class Test

I have the following ListBox that I populate from a DataView and do the
Databinding as follows:
myDataView                     = new DataView(myDataSet.myDataTable);
myListbox.DataSource      = myDataView;

My app creates muti-thread and the status of each thread are shown on a
datagrid.
I got following error message. from Application.Run(new frmMDIMain());
The strange thing is no exception occurs for the first try. But the

I'm having an unusual problem in an MDI application I'm working on.  It
seems that when one MDI child is active, pressing keyboard accelerator keys
will sometimes activate buttons that are not on the active MDI child, but
rather on a non-active MDI child.

I have a base form that has a toolbar on it.  I subclass the form and create
a form called CustomerForm.  In the base form I have a Select Case in the
toolbar_buttonclick method.
Dim frm As New form