private void BindRepeaters()
        {
            var usersInGroup = Utils.User.GetUserIdsInGroup(_groupID);

            Cn.Open();

            //bind allowed users
            if (usersInGroup.Any())
            {
                rptAllowed.DataSource = Cn.ExecuteOrm <UserInfo>(@"SELECT ForumUsers.UserID, ForumUsers.UserName
				FROM ForumUsers
				WHERE UserID IN ("                 + usersInGroup.Select(x => x.ToString()).Aggregate((x, y) => x + "," + y) + ") ORDER BY UserName");
            }
            else
            {
                rptAllowed.DataSource = null;
            }

            rptAllowed.DataBind();

            //bind denied users
            rptDenied.DataSource = Cn.ExecuteOrm <UserInfo>(@"SELECT ForumUsers.UserID, ForumUsers.UserName FROM ForumUsers
				WHERE Disabled=0 
				"                 + (usersInGroup.Any() ? "AND UserID NOT IN (" + usersInGroup.Select(x => x.ToString()).Aggregate((x, y) => x + "," + y) + ")" : "") + " ORDER BY UserName");
            rptDenied.DataBind();

            Cn.Close();

            lblNoUsersInGroup.Visible = (rptAllowed.Items.Count == 0);
        }