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.
NullReferenceException is an error that programmers frequently encounter, and it is often referred to as the Billion Dollar Mist...Show More
WHAT YOU'LL LEARN
An understanding of NullReferenceException and when it can be thrown
A working knowledge of C# nullable operators to simplify null checks
The ability to identify problematic code blocks using C# nullable references
Familiarity with the Option wrapper to avoid NullReferenceException
The ability to avoid NullReferenceException when working with some LINQ methods
An understanding of NullReferenceException and when it can be thrown
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Content
1.
Strategies to Get Rid of NullReferenceException
18 Lessons
About This CourseWhat Is the NullReferenceException?Exercise: NullReferenceException and CollectionsQuiz on NullReferenceExceptionChecking and Preventing NullExercise: Refactoring a Function to Prevent NullC# 6.0-8.0 Nullable OperatorsQuiz on Nullable OperatorsC# 8.0 Nullable ReferencesExercise: Fixing Compilation Errors with Nullable ReferencesUse the Option WrapperExercise: Practicing Utility Methods from the Optional LibraryImplement Your Option WrapperLINQ XOrDefault MethodsExercise: LINQ XOrDefault MethodsSeparate Objects and Separate StateExercise: Solve a Real NullReferenceException IssueWrap Up!
Certificate of Completion
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