---
title: "LayerCollection..::.IndexOf Method (Layer)"
canonical: https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_WinControls_LayerCollection_IndexOf_1_8cbd92ad.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/)

# LayerCollection.IndexOf Method (Layer)
 
Searches for the specified layer and returns the zero-based index of the first occurrence within the entire collection.
 
**Namespace:** [Aurigma.GraphicsMill.WinControls](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WinControls.htm.md)
 **Assembly:** Aurigma.GraphicsMill.WinControls.VectorObjects (in Aurigma.GraphicsMill.WinControls.VectorObjects.dll)
 
## Syntax
  
```
Public Function IndexOf ( _layer As Layer _
) As Integer
```
 
```csharp
public int IndexOf(Layer layer
)
```
 
### Parameters
 
 - layer
     - Type: [Aurigma.GraphicsMill.WinControls.Layer](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_Layer.htm.md)
The layer to locate in the collection.
 
### Return Value
A zero-based index of the first occurrence of the layer within the entire collection, if found; otherwise, -1.
   
## See Also

### Reference

- [LayerCollection Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_LayerCollection.htm.md)
- [IndexOf Overload](https://www.graphicsmill.com/docs/gm5/O_T_Aurigma_GraphicsMill_WinControls_LayerCollection_IndexOf.htm.md)
- [Aurigma.GraphicsMill.WinControls Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WinControls.htm.md)