Analyzers & Code Fixes

A C# compiler turns your source into IL, but it only enforces what the language spec demands. Analyzers fill the gap between "this compiles" and "this is good code." They run during the build, walk your syntax and semantic trees, and report bugs, performance traps, security issues, and style problems before the binary ever ships. This chapter covers what Roslyn analyzers are, how to configure their severity, which packages to install, how to suppress them when you must, and how to wire the whole setup into a build that fails on real violations.