await is stopping the execution of the program

Question

I have a simple method which uses await.But the problem is that as soon as i reaches to the line the execution of the program is getting stopped , i dont know why.Here is my code..

public async void GetUserdetails() {

var upn = "Custom Name";
var userLookupTask = activeDirectoryClient.Users.Where(
            user => user.UserPrincipalName.Equals(
                upn, StringComparison.CurrentCultureIgnoreCase)).ExecuteSingleAsync();

User userJohnDoe = (User)await userLookupTask;
Console.WriteLine(userJohnDoe.UserPrincipalName);
Console.WriteLine(userJohnDoe.DisplayName);
Console.ReadLine();
}

Any ways to get the execution running and see the values on Console.Please help.Thanks..

Check out the implementation of the ExecuteSingleAsync, is it synchronous call internally, is it blocking, which might be causing the current issue — Mrinal Kamboj, Oct 20 '15 at 12:16
Possible duplicate of [async/await - when to return a Task vs void?](http://stackoverflow.com/questions/12144077/async-await-when-to-return-a-task-vs-void) — George Polevoy, Oct 20 '15 at 12:16
How is the `GetUserdetails` called? Is this console application? are you calling it in Main() ? — Sriram Sakthivel, Oct 20 '15 at 12:18
@SriramSakthivel Yes , I am calling it in Main By Object of the Class — Lara, Oct 20 '15 at 12:19
My guess is that that the operation is not awaited, that's why the mentioned Main it's exiting prematurely. — George Polevoy, Oct 20 '15 at 12:22
Your question needs to correctly suggest that Console is exiting, I guessed its stuck and not proceeding forward, but in reality you have the main thread exiting. Use the answer below to wait till you get the execution finish asynchronously — Mrinal Kamboj, Oct 20 '15 at 12:23

Stephen Cleary · Accepted Answer · 2015-10-20T12:20:41.220

I suspect your Console app is simply exiting.

To prevent your Console app from exiting, you should return a Task from GetUserdetails and call Wait on that task:

static void Main()
{
  GetUserDetailsAsync().Wait();
}

static async Task GetUserDetailsAsync()
{
  ...
}

Note that Wait is not normally used in asynchronous programming; it is usually only used once in the Main method of Console apps.

Alternatively, you can move the ReadLine into your Main method.

await is stopping the execution of the program

1 Answers1