System.Windows.Forms.Control.Invalidate Method

Invalidates a specific region of the control and causes a paint message to be sent to the control. Optionally, invalidates the child controls assigned to the control.

Syntax

public void Invalidate (bool invalidateChildren)

Parameters

invalidateChildren
true to invalidate the control's child controls; otherwise, false.

Remarks

Calling the Control.Invalidate(System.Drawing.Region) method does not force a synchronous paint; to force a synchronous paint, call the Control.Update method after calling the Control.Invalidate(System.Drawing.Region) method. When this method is called with no parameters, the entire client area is added to the update region.

Requirements

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0