Run two async tasks in parallel and collect results in .NET 4.5

by 
async Task<int> LongTask1() { 
  ...
  return 0; 
}

async Task<int> LongTask2() { 
  ...
  return 1; 
}

...
{
   Task<int> t1 = LongTask1();
   Task<int> t2 = LongTask2();
   await Task.WhenAll(t1,t2);
   //now we have t1.Result and t2.Result
}

More Related Contents:

  1. async/await – when to return a Task vs void?
  2. WaitAll vs WhenAll
  3. Catch an exception thrown by an async void method
  4. Awaiting multiple Tasks with different results
  5. How to cancel a Task in await?
  6. Running multiple async tasks and waiting for them all to complete
  7. Calling async method synchronously
  8. What’s the difference between Task.Start/Wait and Async/Await?
  9. Why does this async action hang when I try and access the Result property of my Task?
  10. Best way in .NET to manage queue of tasks on a separate (single) thread
  11. Task sequencing and re-entracy
  12. Proper way to implement a never ending task. (Timers vs Task)
  13. Enforce an async method to be called once
  14. What’s the difference between returning void and returning a Task?
  15. awaitable Task based queue
  16. How does Task become an int?
  17. Best way to convert callback-based async method to awaitable task
  18. Is async HttpClient from .Net 4.5 a bad choice for intensive load applications?
  19. Executing tasks in parallel
  20. Calling async methods from non-async code
  21. Use Task.Run() in synchronous method to avoid deadlock waiting on async method?
  22. A pattern for self-cancelling and restarting task
  23. What is the correct way to cancel an async operation that doesn’t accept a CancellationToken?
  24. ForEachAsync with Result
  25. How can I capture the value of an outer variable inside a lambda expression?
  26. How to throttle multiple asynchronous tasks?
  27. Synchronous implementation of interface that returns Task
  28. Using async / await with DataReader ? ( without middle buffers!)
  29. How to implement Task.WhenAny() with a predicate
  30. Calling TaskCompletionSource.SetResult in a non blocking manner

Leave a Comment