Deadlock Async Await

Avoid using Task.Wait or Task.Result while calling async code as this would block on calling the async code. Any code that blocks on calling async code could cause deadlocks. Example:

public static class DeadlockAsyncTaskWait
{
  private static async Task DelayAsync()
  {
    await Task.Delay(1000);
  }
  
  // This method causes a deadlock when called in a GUI or ASP.NET context.
// Will work just fine when calling from a console app!
  public static void Test()
  {
    // Start the delay.
    var delayTask = DelayAsync();
    
    // Wait for the delay to complete.
    delayTask.Wait();
  }
}

Moral of the story: Go async all the way and use async await. That's just the nature of asynchronous coding

Reference : https://msdn.microsoft.com/en-us/magazine/jj991977.aspx