Harnessing .NET Source Generators to Boost Performance

If you’re still relying on runtime tricks like reflection to get things done in .NET, it’s time to level up—because source generators let you move that work to compile time, where it belongs.

.NET source generators are a game-changer. They analyze your code during compilation and generate optimized C# behind the scenes—eliminating boilerplate, reducing runtime overhead, and giving your application a serious performance boost.

That means less work at runtime, faster startup, and more efficient execution—especially in scenarios like logging, serialization, and dependency wiring. In fact, source generation can significantly cut startup time, reduce memory usage, and improve throughput by shifting expensive operations out of runtime and into build time.

This page dives into real-world, performance-focused use cases for source generators—showing you how to replace reflection-heavy patterns, eliminate unnecessary allocations, and generate highly optimized code tailored to your application.

Bottom line: source generators aren’t just a cool feature—they’re a performance power move. Use them right, and your code runs faster, cleaner, and smarter… like a perfectly dialed-in guitar solo. Ignore them, and you’re leaving serious performance on the table.

Microsoft .NET Source Generators

Boosting Performance and Memory Efficiency: Introducing ToDelimitedString() with Source Generators in Spargine

Source Generators: Making API Calls Easy

Microsoft .NET Source Generators: Speeding up JSON Serialization

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