Expanded Library

Working with Nulls in C#

by Jason Roberts

Unexpected null values and NullReferenceExceptions can be a constant source of bugs resulting in wasted development time and out-of-hours support callouts. This course will teach you how to reduce null related errors in your code.

What you'll learn

Making use of an object when it is not supposed to be null can result in unexpected exceptions that can cause your program to crash. These unexpected null related errors may cause data loss or corruption, system downtime, and unhappy users. In this course, Working with Nulls in C#, you’ll gain the ability to reduce the likelihood of getting null related exceptions in production. First, you’ll explore which objects can be set to null and how to check for null values. Next, you’ll discover a design pattern to help eliminate null related exceptions. Finally, you’ll learn how to opt-in to the ability to create non-nullable reference types that enable the compiler to detect null-related problems before you even run your application. When you’re finished with this course, you’ll have the skills and knowledge of nulls in C# needed to reduce null related errors in your production code.

Table of contents

Course Overview
1min

About the author

With over 15 years experience, Jason Roberts is a Microsoft .NET MVP, freelance developer, and author.

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