---
title: "BitmapViewer..::.BitmapChanged Event"
canonical: https://www.graphicsmill.com/docs/gm5/E_Aurigma_GraphicsMill_WebControls_BitmapViewer_BitmapChanged.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/)

# BitmapViewer.BitmapChanged Event
 
Fires when [Bitmap](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_WebControls_BitmapViewer_Bitmap.htm.md) property is changed or this bitmap is updated.
 
**Namespace:** [Aurigma.GraphicsMill.WebControls](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WebControls.htm.md)
 **Assembly:** Aurigma.GraphicsMill.WebControls (in Aurigma.GraphicsMill.WebControls.dll)
 
## Syntax
  
```
<BrowsableAttribute(True)> _
Public Event BitmapChanged As EventHandler
```
 
```csharp
[BrowsableAttribute(true)]
public event EventHandler BitmapChanged
```
 
## Remarks
  
This event fires in two cases:
 
1. When you modify [Bitmap](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_WebControls_BitmapViewer_Bitmap.htm.md) property.
2. When the [Changed](https://www.graphicsmill.com/docs/gm5/E_Aurigma_GraphicsMill_Bitmap_Changed.htm.md) event of the bitmap stored in the [Bitmap](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_WebControls_BitmapViewer_Bitmap.htm.md) property fires.
   
## See Also

### Reference

- [BitmapViewer Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WebControls_BitmapViewer.htm.md)
- [Aurigma.GraphicsMill.WebControls Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WebControls.htm.md)