Can you find an Active Directory User's Primary Group in C#?

Question

I am working on an application that manages user accounts in Active Directory. I am using the System.DirectoryServices.AccountManagement namespace whereever possible, but I

Answer 1

The RID of the user's primary group is stored in the 'primaryGroupID' attribute on the user object. You'd have to get the DirectoryEntry for the given user (or user other API's) in order to retrieve this value. After getting that value, you'd have to translate it into a SID for the primary group, and then get the group from that.

There is a KB article that has more detail on this, as well as VB code with how to find the primary group, here: http://support.microsoft.com/kb/297951