Invalidates the specified region of the control.
A Leadtools.LeadRectD that represents the region to invalidate. If this value is LeadRectD.Empty, then the entire control area must be invalidated. This value is in pixel control coordinate.
The automation object calls AutomationInvalidate when the container or parts of it need to be re-rendered. For example, when the user adds, moves or deletes annotation objects using the designers.
The default implementation calls ImageViewer.Invalidate when this method is called by the automation object.
Medical Web Viewer .NET
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