private void FillList() { UserGroups.RefreshCache(); listGroups.Items.Clear(); _listUserGroups = UserGroups.GetWhere(x => IsAdminMode || !GroupPermissions.HasPermission(x.UserGroupNum, Permissions.SecurityAdmin, 0)); for (int i = 0; i < _listUserGroups.Count; i++) { listGroups.Items.Add(_listUserGroups[i].Description); } }