---
title: "ViewerBase..::.Invalidate Method "
canonical: https://www.graphicsmill.com/docs/gm5/O_T_Aurigma_GraphicsMill_WinControls_ViewerBase_Invalidate.htm
product: "Graphics Mill 5.5 for .NET"
---

This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)

# ViewerBase.Invalidate Method 
 
## Overload List

|   |  Name |  Description |
| --- | --- | --- |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [Invalidate()](http://msdn2.microsoft.com/en-us/598t492a) |  (Inherited from [Control](http://msdn2.microsoft.com/en-us/36cd312w).) |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [Invalidate(Region)](http://msdn2.microsoft.com/en-us/wtzka3b5) |  (Inherited from [Control](http://msdn2.microsoft.com/en-us/36cd312w).) |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [Invalidate(Boolean)](http://msdn2.microsoft.com/en-us/xz8ytzt0) |  (Inherited from [Control](http://msdn2.microsoft.com/en-us/36cd312w).) |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [Invalidate(Rectangle)](http://msdn2.microsoft.com/en-us/8dtk06x2) |  (Inherited from [Control](http://msdn2.microsoft.com/en-us/36cd312w).) |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [Invalidate(Region, Boolean)](http://msdn2.microsoft.com/en-us/w6w9csht) |  (Inherited from [Control](http://msdn2.microsoft.com/en-us/36cd312w).) |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [Invalidate(Rectangle, Boolean)](http://msdn2.microsoft.com/en-us/8bk29t0f) |  (Inherited from [Control](http://msdn2.microsoft.com/en-us/36cd312w).) |
   
## See Also

### Reference

- [ViewerBase Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_ViewerBase.htm.md)
- [ViewerBase Members](https://www.graphicsmill.com/docs/gm5/AllMembers_T_Aurigma_GraphicsMill_WinControls_ViewerBase.htm.md)
- [Aurigma.GraphicsMill.WinControls Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WinControls.htm.md)