· Navigate to the SharePoint list using the browser.
· Select the Settings + List Settings menu command.
· Copy the Url from the browser address bar into Notepad. It will look something like:
http://SP2010/Project/_layouts/listedit.aspx?List=%7B46534EF9%2DCD3A%2D46E0%2DAE56%2DABC168BE562F%7D
· Delete everything before and including “List=”.
· Change “%7B” to “{”
· Change all “%2D” to “-“
· Change “%7D” to “}”
You are now left with the Id:
{46534EF9-CD3A-46E0-AE56-ABC168BE562F}