.NET 6, 7 and 8 introduced a set of powerful Argument...Exception.ThrowIf... helper methods. They’re fast, they’re clean, and they eliminate a ton of repetitive guard‑clause code. But let’s be honest: writing validation logic in every property setter still gets old quickly.

So I built ReflectionIT.PropertyThrowGenerator — a Roslyn source generator that injects validation logic directly into your partial properties using simple [ThrowIf...] attributes. You declare what should be validated, and the generator writes the how.

No more boilerplate. No more forgetting a null check. No more copy‑paste errors.

Just clean, validated properties.

Over the years I’ve implemented the Dispose pattern in C# more times than I can count. And if you’ve done the same, you know the drill: boilerplate, subtle rules, edge cases, async variants, thread‑safety, unmanaged resources, inheritance… and the constant risk of getting one tiny detail wrong.

So I decided to fix that.

Today I’m happy to introduce a new open‑source project:

With the version 17.10.0 Preview 3.0 of Visual Studio Preview you can test some new C# 13 features. In this blog I will explain the params Collection feature as documented in this proposal. To use this feature you have to set the LangVersion in your csproj file to preview.