Chapter 07. Decompiling using the ILSpy extension for Visual Studio Code

[Dreamoochy]

1. I don't have two tabs with C# and IL. It is possible to split editor and get two tabs of the decompiled assembly, but they are synchronized. I.e. if I change lang view from C# to IL, both views are switched to IL.
2. There's no .module extern libSystem.Native text in the decompiled IL.
3. Decompiled assembly tree has way less nodes:

v System.IO.FileSystem
  v {}
    v <Module>

So it is impossible to perform steps 9, 10, 11.

Maybe it's because my ilspy-vscode extension is v0.13.1 while the one in the book is 0.9.0. Something might have changed. And/or some additional configuring is required.

I work with Win 11 21H2, VSCodium v1.68.1, ilspy-vscode v0.13.1, .NET SDK v6.0.301

[markjprice]

Yes, it looks like that extension has been changed. You could go to the extension and click Uninstall | Install Another Version... and then select 0.11.2 which is the newest version that shows two edit windows side-by-side as shown in the book. Then you can upgrade back to 13.x afterwards.

But that still doesn't show the classes so it's probably not worth it.

[markjprice]

In the next edition, I will tell the reader to open a different assembly so it works with the latest version of ILSpy. Probably the System.Linq assembly and decompile the Enumerable class and its Average method for a sequence of int values:

And then show how to toggle between C# and IL code by clicking Output Language:

[markjprice]

I have added an errata item:
https://github.com/markjprice/cs10dotnet6/blob/main/errata.md#page-297---decompiling-using-the-ilspy-extension-for-visual-studio-code