Async Task.WhenAll with timeout

Question

Is there a way in the new async dotnet 4.5 library to set a timeout on the Task.WhenAll method. I want to fetch several sources and stop after say 5 seconds and

Answer 1

In addition to svick's answer, the following works for me when I have to wait for a couple of tasks to complete but have to process something else while I'm waiting:

Task[] TasksToWaitFor = //Your tasks
TimeSpan Timeout = TimeSpan.FromSeconds( 30 );

while( true )
{
    await Task.WhenAny( Task.WhenAll( TasksToWaitFor ), Task.Delay( Timeout ) );
    if( TasksToWaitFor.All( a => a.IsCompleted ) )
        break;

    //Do something else here
}