Error with UserPrincipal.GetAuthorizationGroups() method

Question

I am having an issue using the GetAuthorizationGroups method of the UserPrincipal class in a web application.

Using the following code, I am receiving \"While trying to

Answer 1

I dealt with this same problem. See discussion on similar question. https://stackoverflow.com/a/8347817/2012977

Solution is below:

public List GetGroups(string userName)
    {
        var result = new List();
        PrincipalContext ctx = GetContext(); /*function to get domain context*/
        UserPrincipal user = UserPrincipal.FindByIdentity(ctx, userName);
        if (user != null)
        {
            PrincipalSearchResult groups = user.GetAuthorizationGroups();

            var iterGroup = groups.GetEnumerator();
            using (iterGroup)
            {
                while (iterGroup.MoveNext())
                {
                    try
                    {
                        Principal p = iterGroup.Current;
                        result.Add((GroupPrincipal) p);
                    }
                    catch (PrincipalOperationException)
                    {
                        continue;
                    }
                }
            }
        }

        return result;
    }