Tell if user exists in SharePoint Group through web service
问题 I am working on an internal web application that will use predefined SharePoint groups for determining a user's security level. I have done some research and found SharePoint's "usergroup" web service which has the method "GetUserCollectionFromGroup()" which will list all of the users in a given SharePoint group. The problem I am having is some of the predefined SharePoint groups have Active Directory groups added to them, not the individual users. So, when I call GetUserCollectionFromGroup(