---
title: "Collection<(Of <(T>)>)..::.IsReadOnly Property "
canonical: https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_VectorObjects_Collection%601_IsReadOnly.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/)

# Collection<T>.IsReadOnly Property 
 
Gets a value indicating whether the collection is read-only.
 
**Namespace:** [Aurigma.GraphicsMill.AjaxControls.VectorObjects](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_AjaxControls_VectorObjects.htm.md)
 **Assembly:** Aurigma.GraphicsMill.AjaxControls.VectorObjects (in Aurigma.GraphicsMill.AjaxControls.VectorObjects.dll)
 
## Syntax
  
```
Public ReadOnly Property IsReadOnly As Boolean
```
 
```csharp
public bool IsReadOnly { get; }
```
 
### Property Value
 
The [Boolean](http://msdn2.microsoft.com/en-us/a28wyd50) value indicating if the collection is read-only.
 
### Implements
 
[ICollection<T>.IsReadOnly](http://msdn2.microsoft.com/en-us/0cfatk9t)
   
## See Also

### Reference

- [Collection<T> Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_VectorObjects_Collection%601.htm.md)
- [Aurigma.GraphicsMill.AjaxControls.VectorObjects Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_AjaxControls_VectorObjects.htm.md)