using System;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {               

        var a = MyMethodAsync(); //Task started for Execution and immediately goes to Line 19 of the code. Cursor will come back as soon as await operator is met       

        Console.WriteLine("Cursor Moved to Next Line Without Waiting for MyMethodAsync() completion");

        Console.WriteLine("Now Waiting for Task to be Finished");       

        Task.WaitAll(a); //Now Waiting      

        Console.WriteLine("Exiting CommandLine");       

    }

    public static async Task MyMethodAsync()

    {

        Task<int> longRunningTask = LongRunningOperation();

        // independent work which doesn't need the result of LongRunningOperationAsync can be done here

        Console.WriteLine("Independent Works of now executes in MyMethodAsync()");

        //and now we call await on the task 

        int result = await longRunningTask;

        //use the result 

        Console.WriteLine("Result of LongRunningOperation() is " + result);

    }

​

    public static async Task<int> LongRunningOperation() // assume we return an int from this long running operation 

    {

        Console.WriteLine("LongRunningOperation() Started");

        await Task.Delay(2000); // 2 second delay

        Console.WriteLine("LongRunningOperation() Finished after 2 Seconds");

        return 1;

    }   

}