Using the await operator to get asynchronous task results

This recipe walks through the basic scenario of using asynchronous functions. We will compare how to get an asynchronous operation result with TPL and with the await operator.

Getting ready

To step through this recipe, you will need Visual Studio 2012. There are no other prerequisites. The source code for this recipe can be found at BookSamples\Chapter5\Recipe1.

How to do it...

To use the await operator to get asynchronous task results, perform the following steps:

1. Start Visual Studio 2012. Create a new C# Console Application project.

2. In the Program.cs file, add the following using directives:

   using System;
   using System.Threading;
   using System.Threading.Tasks;

3. Add the following code snippet below the Main method:

   static Task AsynchronyWithTPL()
   {
     Task<string> t = GetInfoAsync("Task 1");
     Task t2 = t.ContinueWith(task => Console.WriteLine(t.Result), TaskContinuationOptions.NotOnFaulted);
     Task t3 = t.ContinueWith(task => Console...