How to change default code editor for shelveset details in TFS

You need to change the following key in windows registry:
1. open REGEDIT
2. Find the key HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SystemFileAssociations\text\shell\edit\command
3. Change the path to the editor (%ProgramFiles(x86)%\Notepad++\notepad++.exe  in my case)