Windows Forms Programming in Visual Basic .NET

Standard Controls

A control is a class that derives from the System.Windows.Forms.Control base (either directly or indirectly) and is responsible for drawing a chunk of the container, which is either a form or another control. WinForms comes with several standard controls available by default on the Toolbox in VS.NET. These controls can be broken into the following ad hoc categories:

• Action controls. Controls such as Button and Toolbar exist to allow the user to click on them to cause something to happen.

• Value controls. Controls such as Label and PictureBox show the user a value, such as text or a picture, but don't allow the user to change the value. Other value controls, such as TextBox or DateTimePicker, allow the user to change the value ...