Gets or sets the name of the Windows class to derive the control from.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The default value for this property is a null reference (Nothing in Visual Basic), indicating that the control is not derived from an existing control class. To derive from an existing control class, store the system class name in this property. For example, to derive from the standard Button control, set this property to "BUTTON".