User added\deleted event in sharepoint
问题 How can i know when a user is added (or deleted) to a sharepoint site or to a group in a sharepoint site? I tried to attach an SPItemEventReceiver on the user information list, but the main problem is that i can't know when a user is added (removed) from a group... What is the best approach to do that?? noting that i'm using it for licensing purpose and i want to know when the number of users in a specific group passed the maximum of the allowed number. 回答1: This is an unexpected pain to