---
title: "TiffExtraChannelCollection Class"
canonical: https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_TiffExtraChannelCollection.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/)

# TiffExtraChannelCollection Class
 
This class represents a collection of TIFF extra channels.
 
**Namespace:** [Aurigma.GraphicsMill.Codecs](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Codecs.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```
<DefaultMemberAttribute("Item")> _
Public Class TiffExtraChannelCollection _Implements IEnumerable
```
 
```csharp
[DefaultMemberAttribute("Item")]
public class TiffExtraChannelCollection : IEnumerable
```
 
## Remarks
 The collection contains all extra channels associated with the TIFF page. Using this property you can either obtain all extra channels from the page or write some channels in addition to primary ones.
 
## Inheritance Hierarchy
  
- [System.Object](http://msdn2.microsoft.com/en-us/e5kfa45b)
    - Aurigma.GraphicsMill.Codecs.TiffExtraChannelCollection
 
## Object Model

[![](https://www.graphicsmill.com/docs/gm5/Aurigma.GraphicsMill_ObjectModel_180.png)](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_TiffExtraChannelCollection.htm.md)
![](https://www.graphicsmill.com/docs/gm5/ObjectModel1.png)[![](https://www.graphicsmill.com/docs/gm5/Aurigma.GraphicsMill_ObjectModel_181.png)](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_TiffExtraChannel.htm.md)
  
## See Also

### Reference

- [TiffExtraChannelCollection Members](https://www.graphicsmill.com/docs/gm5/AllMembers_T_Aurigma_GraphicsMill_Codecs_TiffExtraChannelCollection.htm.md)
- [Aurigma.GraphicsMill.Codecs Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Codecs.htm.md)
- [Aurigma.GraphicsMill.Codecs.TiffExtraChannel](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_TiffExtraChannel.htm.md)

### Manual

- [Working with TIFF Extra Channels](https://www.graphicsmill.com/docs/gm5/WorkingwithTIFFExtraChannels.htm.md)