Invalidates the whole area of the control that is displayed on the design surface and signals the control designer to redraw the control.
Syntax
public void Invalidate ()
Remarks
To enable the control designer to handle paint events, use the ControlDesigner.SetViewFlags(ViewFlags, bool) method in the ControlDesigner.Initialize(System.ComponentModel.IComponent) method.
The ControlDesigner.Invalidate method provides the design host with a way to instruct the control designer to redraw the control. Essentially, this is the same as calling ControlDesigner.UpdateDesignTimeHtml method, because it causes the whole control to be redrawn.
Requirements
Namespace: System.Web.UI.Design
Assembly: System.Design (in System.Design.dll)
Assembly Versions: 2.0.0.0
Assembly: System.Design (in System.Design.dll)
Assembly Versions: 2.0.0.0