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Learn how .NET 7+ source generators in System.Text.Json eliminate reflection, boost JSON serialization performance, and what trade‑offs to consider. A step‑by‑step example shows how to enable, build, and benchmark the generated code.
Source generators move mapping boilerplate from runtime reflection to compile-time code emission. A worked example shows a tiny attribute-driven mapper that produces debuggable, zero-overhead C# during the build.
Reflection or source-generated System.Text.Json? A decision guide covering trimming, Native AOT, cold starts, hybrid resolver chains, and how to validate the choice on your own DTOs.
NET 8 doesn't include a built-in DataAnnotations source generator. This post shows how to write a minimal generator that emits a fast Validate method for your DTOs, moving validation from runtime reflection to compile-time code generation.
When designing helper types that should not be accidentally exposed outside their source file, the file modifier offers stronger encapsulation than internal. However, if a member such as a public method returns or accepts that file‑scoped type, the compiler flags an accessibility‑domain inconsistency because the member’s effective domain is broader than the
csharp
dotnet