pinvoke VS Roslyn

Hooks are a low-level Win 32 API and are not directly exposed from the BCL, so you either need to write your own P/Invoke code (maybe using something like https://github.com/dotnet/pinvoke)

To add to the pile of solutions for this: https://github.com/dotnet/pinvoke

I'm using the PInvoke libraries (cf. https://github.com/dotnet/pinvoke/). And if my mouse hovers a split of a second over PInvoke.User32 or even worse PInvoke.Kernel32, VS will freeze for 2 minutes trying to render the very big summary of those classes.

.NET is a little smarter about switch code generation these days: https://github.com/dotnet/roslyn/pull/66081

Recently, while creating some experimental C# source code generators (xafero/csharp-generators), I was just concatenating strings together. Like you do, you know, if things have to go very quickly. If you have a simple use case, use a formatted multi-line string or some template library like scriban. But I searched for a way to generate more and more complicated logic easily - like for example, adding raw SQL handler methods to my pre-generated DBSet-like classes for my ADO.NET experiment. You could now say: Use Roslyn and that's really fine if you look everything up in a website like SharpLab, which shows immediately the syntax tree of our C# code.

At runtime, the Case C# expressions are embedded into a function and dynamically compiled into an assembly using the Roslyn C# compiler. Then the function that contains the expression is called (e.g. CaseAvailableFunction.Availablle()). At runtime, the function provides various methods to access stored case values as well as the current input data.