Silverlight, dealing with Async calls

Question

I have some code as below:

        foreach (var position in mAllPositions)
        {
                 DoAsyncCall(position);
        }
//I want to execute co         


        

Answer 1

(NB, I am giving you two separate answers. This one sticks as close to your question as possible.)

Your question says

while{ count >= mAllPositions.Count )
{
    //Run my code here
}

but I am guessing that what you really mean is:

while( count < mAllPositions.Count )
   ; // do nothing -- busy wait until the count has been incremented enough
// Now run my code here

??

If so, then you can accomplish the same thing more efficiently by using a semaphore:

Semaphore TheSemaphore = new Semaphore( 0, mAllPositions.Count );

As each async call completes, release the semaphore.

TheSemaphore.Release();

Before executing your final code, ensure the semaphore has been released the requisite number of times:

 for( int i=0; i

Your code will block until the async operations have all been completed.