How to use pattern matching in C#
Pattern matching is a great feature first introduced in C# 7. You can use pattern matching on any data type, even on custom data types, to extract values from an expression.
Pattern matching was enhanced in C# 8, which introduced a wide array of new pattern types. It was enhanced even further in C# 9, with the addition of new relational and logical patterns. This article talks about the newly added patterns in C# 9 and how we can take advantage of them, with code examples wherever appropriate.
To work with the code examples provided in this article, you should have Visual Studio 2019 installed in your system. If you don’t already have a copy, you can download Visual Studio 2019 here.