---
title: "Combiner..::.SourceBitmap Property "
canonical: https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Transforms_Combiner_SourceBitmap.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/)

# Combiner.SourceBitmap Property 
 
Gets/sets a source bitmap which will be used to get pixels from.
 
**Namespace:** [Aurigma.GraphicsMill.Transforms](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Transforms.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```
Public Property SourceBitmap As Bitmap
```
 
```csharp
public Bitmap SourceBitmap { get; set; }
```
 
### Property Value
 [Bitmap](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Bitmap.htm.md) class instance used as source bitmap.
 
## Remarks
 By default this property is set to **null**. However this transform cannot be executed with non-initialized source bitmap. So you should make sure that it is specified before applying the effect.
   
## See Also

### Reference

- [Combiner Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Transforms_Combiner.htm.md)
- [Aurigma.GraphicsMill.Transforms Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Transforms.htm.md)