Combining tasks

This recipe will show you how to set up tasks that are dependent on each other. We will learn how to create a task that will run after the parent task is complete. In addition, we will discover a way to save thread usage for very short-lived tasks.

Getting ready

To step through this recipe, you will need Visual Studio 2015. There are no other prerequisites. The source code for this recipe can be found at BookSamples\Chapter4\Recipe3.

How to do it...

To combine tasks, perform the following steps:

1. Start Visual Studio 2015. Create a new C# console application project.

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

   using System;
   using System.Threading.Tasks;
   using static System.Console;
   using static System.Threading.Thread;

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

   static int TaskMethod(string name, int seconds)
   {
     WriteLine(
       $"Task {name} is running on a thread id " +
       $"{CurrentThread.ManagedThreadId}. Is thread pool thread: " +
       $"{CurrentThread...