I'm working on a multi-threaded Silverlight application.

The application has two threads: Main/UI and a background working thread.

The UI thread should be able to kill the background thread, like so:

```
private Thread executionThread;

....

executionThread = new Thread(ExecuteStart);
executionThread.Start();

....

executionThread.Abort(); // when the user clicks "Stop"

```

The last line raises an Exception:

> 
> MethodAccessException: Attempt to access the method failed: System.Threading.Thread.Abort()
> 
> 
> 

Any idea? why i cannot abort a thread in Silverlight?

Thanks,
Naimi