ControlDesignerInvalidate Method

Invalidates the specified area of the control that is displayed on the design surface and signals the control designer to redraw the control.

Namespace:   System.Web.UI.Design
Assembly:  System.Design (in System.Design.dll)

public void Invalidate(
	Rectangle rectangle
void Invalidate(
	Rectangle rectangle
member Invalidate : 
        rectangle:Rectangle -> unit
Public Sub Invalidate (
	rectangle As Rectangle



A Rectangle object that represents the area to invalidate, relative to the upper-left corner of the control.


To enable the control designer to handle paint events, use the SetViewFlags method in the Initialize method.

The Invalidate method provides the design host with a way to instruct the control designer to redraw a specific part of the control.

Version Information
.NET Framework
Available since 2.0
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