Writing Your Own Roslyn Analyzers for .NET MAUI | Community Feed

Code reviews don’t scale, and tribal knowledge slips through pull requests. This guide walks through building custom Roslyn analyzers that catch mobile-specific mistakes in .NET MAUI apps before the app even runs — turning architecture documents and PR comments into enforceable compiler rules.

What you’ll learn

Why mobile concerns like UI-thread blocking, memory leaks, and platform-specific APIs make analyzers especially valuable in MAUI
How Roslyn analyzers work — analyzing syntax trees and symbols, emitting diagnostics, and offering automatic code fixes
Four worked examples: enforcing ViewModel naming, detecting blocking Task.Result calls, preventing repository access from Views, and enforcing MainThread usage
How to write a DiagnosticDescriptor, register symbol and syntax-node actions, and unit test your analyzer
How to ship analyzers as NuGet packages and enforce them in CI/CD with GitHub Actions or Azure DevOps

If you maintain a large or multi-team MAUI codebase, this is a practical blueprint for making the IDE enforce your standards automatically.