_Strategies to Get Rid of NullReferenceException.png

dotnet6.tar.gz

dotnet6job

NullReferenceException is an error that programmers frequently encounter, and it is often referred to as the Billion Dollar Mistake. This course is designed to assist you in avoiding this error.

You will begin by gaining an understanding of when NullReferenceException is thrown and how to prevent null in your code. You’ll also learn how to employ nullable operators to simplify null checks and use nullable references and the Option wrapper to identify problematic code blocks. Finally, you will explore avoiding NullReferenceException when using specific LINQ methods and designing your C# classes.

Upon completing this course, you’ll have gained the necessary knowledge and skills to effectively address and avoid NullReferenceException issues in your projects.

Mastering NullReferenceException Prevention in C#

To prevent a `NullReferenceException`, we should check and defend against `null`. The real question is when an object reference might be `null` and therefore when we should add a `null` check. That's precisely what C# 8.0 solves with the **nullable references feature**.

Use C# 8.0 nullable references to signal a possible NullReferenceException.

Strategies to Get Rid of NullReferenceException

C# 8.0 Nullable References