Using the await operator in a lambda expression

This recipe will show how to use await inside a lambda expression. We will write an anonymous method that uses await, and get a result of the method execution asynchronously.

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\Recipe2.

How to do it...

To write an anonymous method that uses await and get a result of the method execution asynchronously by using the await operator in a lambda expression, 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:

   async static Task AsynchronousProcessing()
   {
     Func<string, Task<string>> asyncLambda = async name => {
       await Task.Delay(TimeSpan...