Steven Giesel • 4/6/2026

Source code generated string enums with exhaustion support

This article discusses modernizing a previous approach to type-safe string enums in C#. It addresses issues like reflection overhead and lack of exhaustion checks by introducing source code generation. The author presents an `Enumeration` base class and a `[Enumeration]` attribute that generates all necessary code, including static fields and a `FrozenSet` of all values, enabling compile-time safety and pattern matching exhaustion support.

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#c #.net #Source Code Generation