Book Image

Parallel Programming and Concurrency with C# 10 and .NET 6

By : Alvin Ashcraft
Book Image

Parallel Programming and Concurrency with C# 10 and .NET 6

By: Alvin Ashcraft

Overview of this book

.NET has included managed threading capabilities since the beginning, but early techniques had inherent risks: memory leaks, thread synchronization issues, and deadlocks. This book will help you avoid those pitfalls and leverage the modern constructs available in .NET 6 and C# 10, while providing recommendations on patterns and best practices for parallelism and concurrency. Parallel, concurrent, and asynchronous programming are part of every .NET application today, and it becomes imperative for modern developers to understand how to effectively use these techniques. This book will teach intermediate-level .NET developers how to make their applications faster and more responsive with parallel programming and concurrency in .NET and C# with practical examples. The book starts with the essentials of multi-threaded .NET development and explores how the language and framework constructs have evolved along with .NET. You will later get to grips with the different options available today in .NET 6, followed by insights into best practices, debugging, and unit testing. By the end of this book, you will have a deep understanding of why, when, and how to employ parallelism and concurrency in any .NET application.
Table of Contents (18 chapters)
Part 1:Introduction to Threading in .NET
Part 2: Parallel Programming and Concurrency with C#
Part 3: Advanced Concurrency Concepts

Parallel loops in .NET

In this section, we will explore some examples of leveraging data parallelism in .NET projects. The parallel versions of the C# for and foreach loops, Parallel.For and Parallel.ForEach, are part of the System.Threading.Tasks.Parallel namespace. Using these parallel loops is similar to using their standard counterparts in C#.

One key difference is that the body of the parallel loops is declared as a lambda expression. As a result, there are some changes to how you would continue or break from the parallel loops. Instead of using continue to stop the current iteration of the loop without breaking the entire loop, you would use a return statement. The equivalent of using break to break out of a parallel loop is to use the Stop() or Break() statements.

Let’s look at an example of using a Parallel.For loop in a .NET WinForms application.

Basic Parallel.For loops

We are going to create a new WinForms application that allows users to select a folder...