---
title: "Bitmap..::.IsIndexed Property "
canonical: https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_IsIndexed.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/)

# Bitmap.IsIndexed Property 
 
Indicates if current bitmap is indexed (palette-based).
 
**Namespace:** [Aurigma.GraphicsMill](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```
Public ReadOnly Property IsIndexed As Boolean
```
 
```csharp
public bool IsIndexed { get; }
```
 
### Property Value
If true, the image is indexed (each pixel is an index in palette rather than color value).
 
## Remarks
 If the bitmap is indexed, it is guarantied that [Palette](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Bitmap_Palette.htm.md) property, contains valid [ColorPalette](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_ColorPalette.htm.md) object.
 
## Examples
  
```
Console.WriteLine("Bitmap")
Console.WriteLine("  PixelFormat: " & bitmap.PixelFormat.ToString())
Console.WriteLine("  CMYK: " & bitmap.IsCmyk)
Console.WriteLine("  GrayScale: " & bitmap.IsGrayScale)
Console.WriteLine("  RGB: " & bitmap.IsRgb)
Console.WriteLine("  Indexed: " & bitmap.IsIndexed)
Console.WriteLine("  Extended: " & bitmap.IsExtended)

Dim bitmapData As Aurigma.GraphicsMill.BitmapData = bitmap.LockBits(20, 20, 150, 100)

Console.WriteLine("BitmapData")
Console.WriteLine("  PixelFormat: " & bitmapData.PixelFormat.ToString())

bitmap.UnlockBits(bitmapData)
```
 
```csharp
Console.WriteLine("Bitmap");
Console.WriteLine("  PixelFormat: " + bitmap.PixelFormat.ToString());
Console.WriteLine("  CMYK: " + bitmap.IsCmyk);
Console.WriteLine("  GrayScale: " + bitmap.IsGrayScale);
Console.WriteLine("  RGB: " + bitmap.IsRgb);
Console.WriteLine("  Indexed: " + bitmap.IsIndexed);
Console.WriteLine("  Extended: " + bitmap.IsExtended);

Aurigma.GraphicsMill.BitmapData bitmapData = bitmap.LockBits(20, 20, 150, 100);

Console.WriteLine("BitmapData");
Console.WriteLine("  PixelFormat: " + bitmapData.PixelFormat.ToString());

bitmap.UnlockBits(bitmapData);
```
   
## See Also

### Reference

- [Bitmap Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Bitmap.htm.md)
- [Aurigma.GraphicsMill Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill.htm.md)