C# Tutorial: Pattern Matching
switch expressions, type patterns, property patterns, list patterns, and deconstruction.
Pattern matching
C# 8+ has powerful pattern matching. It is concise, exhaustive, and catches more bugs at compile time.
Patterns appear in `switch` expressions, `is` expressions, and `when` guards.
What you'll learn in this C# pattern matching tutorial
This interactive C# tutorial has 8 hands-on exercises. Estimated time: 18 minutes.
- switch expression — Modern switch expression returns a value. No break needed.
- Type patterns — Match on the runtime type of an object.
- Property patterns — Match specific property values with property patterns.
- Tuple patterns — Match on tuples — great for combining conditions.
- Deconstruction — Deconstruct objects into variables with tuple-style assignment.
- List patterns (C# 11) — Match on the contents of a list or array.
- Combining patterns with and/or/not — Combine patterns with `and`, `or`, `not`.
- Pattern matching in real code — Pattern matching shines in domain logic.
C# Pattern Matching concepts covered
- Pattern matching