Invalidates the specified region of the viewer (adds it to the viewer's update region, which is the area that will be repainted at the next paint operation), and causes the viewer to be redrawn without blinking of image in the viewer.

'Declaration

Public Overloads Sub InvalidateSafely( _
   ByVal rect
A System.Drawing.Rectangle that represents the region to invalidate.
 As System.Drawing.Rectangle _
)

public void InvalidateSafely(
   System.Drawing.Rectangle rect
)

public: void InvalidateSafely(
   System.Drawing.Rectangle* rect
)

public:
void InvalidateSafely(
   System.Drawing.Rectangle^ rect
)