using System;

using System.Threading.Tasks;

​

public class MyApp

{

    public static void Main()

    {

        Console.WriteLine("1. MyApp calls camera capture.");

        CameraCaptureAsync().Wait();

    }

​

    public async static Task CameraCaptureAsync()

    {

        Console.WriteLine("2. That calls callbackFunction");

        var task = CallbackFunction();

        Console.WriteLine("4. In the meantime.");

        Console.WriteLine("5. Do some other stuff. ");

        await task;

        Console.WriteLine("7. Process the " + task.Result);

        DoMoreStuff();

​

    }

​

    public async static Task<string> CallbackFunction()

    {

        Console.WriteLine("3. Which takes a picture.");

        await Task.Delay(100);

        Console.WriteLine("6. After the callback functions completes");

        return "Photograph";

    }

​

    public static void DoMoreStuff()

    {

        Console.WriteLine("8. Do more stuff.");

    }

}

​

​