Code formatting in Visual Studio Code is not working on C# code

For C# you need to

• Open a folder (not a file) that contains at least one .sln file
• In the bottom bar you will see a blinking flame. Wait until it stops blinking.
• Click on the flame. You are going to be asked to select a file.
• In case you selected a .sln file click again on the flame and select a .csproj file.
• You can now format all .cs files which are part of the selected project using Shift + Alt + F.