What thread calls the completed event handler on silverlight WCF calls?

Question

Assume that I have Silverlight app doing a call to a WCF service:

void DoStuff()
{
    MyProxy proxy = new MyProxy();
    proxy.DoStuffCompleted += DoStuffCo         


        

Answer 1

The Completed event will occur on a different thread than the UI Thread. Multiple Completed events may be executed simultaneously on different threads because a thread pool is used to handle results.