C# - Visual Studio 2017 - Get actual code of predefined methods

Question

I'm curious but I just couldn't find anything on a quick search.

How can I display how eg String.Concat(String0, String1); is processed within the debugging? I'd be interessted in both the actual processor code (like assembler) and and the actually processed c# code (as if it was a self written method).

Thanks

Answer 1

Official guide is at How to: Debug .NET Framework Source .

Quick way:

Options -> Debugging -> Enable .NET Framework source stepping.

Since you most likely don't have the sources set up you should see:

and click view disassembly.

String.cs can be seen here:

https://referencesource.microsoft.com/#mscorlib/system/string.cs