I needed to locate all GUID constants in a VS solution, and found this regular expression for GUIDs.
Pressing Ctrl+Shift+F, selecting “Use: Regular expression” and pasting the regex, VS would not return any results.
After cutting out the more “exotic” parts of the regex, I finally used the regular expression
([0-9a-fA-F])+-([0-9a-fA-F])+-([0-9a-fA-F])+-([0-9a-fA-F])+-([0-9a-fA-F])+
to retrieve all literal GUID strings in my C# projects.
