Changing asynchronous processing order ConcurrentStack

This recipe is a slight modification of the previous one. We will once again create a set of tasks to be processed asynchronously by multiple workers, but this time we implement it with ConcurrentStack and see the differences.

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 in BookSamples\Chapter6\Recipe3.

How to do it...

To understand the processing of a set of tasks implemented with ConcurrentStack, 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.Collections.Concurrent;
   using System.Threading;
   using System.Threading.Tasks;

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

   static async Task RunProgram()
   {
     var taskStack = new ConcurrentStack<CustomTask>();
     var cts = new CancellationTokenSource...