Shape.Invalidate Method

Invalidates a specific region of a line or shape control and causes a paint message to be sent to the control.

Namespace:  Microsoft.VisualBasic.PowerPacks
Assembly:  Microsoft.VisualBasic.PowerPacks.Vs (in Microsoft.VisualBasic.PowerPacks.Vs.dll)

Syntax

'宣告
Public Overridable Sub Invalidate

public virtual void Invalidate()

public:
virtual void Invalidate()

abstract Invalidate : unit -> unit 
override Invalidate : unit -> unit 

public function Invalidate()

Remarks

Calling the Invalidate method does not force a synchronous paint; to force a synchronous paint, call the Update method after you call the Invalidate method.

.NET Framework Security

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

See Also

Reference

Shape Class

Microsoft.VisualBasic.PowerPacks Namespace

Other Resources

How to: Draw Lines with the LineShape Control (Visual Studio)

How to: Draw Shapes with the OvalShape and RectangleShape Controls (Visual Studio)

Introduction to the Line and Shape Controls (Visual Studio)