public ActionResult FilterSelectionChanged(AdminUserModel aum)
        {
            UserFitlerModel        = aum.Filter;
            AdminContrTransporter.SelectedItemId1 = 0;

            return RedirectToAction("UserEditView", "Admin");
        }
        public ActionResult UserToGroupSelectionChanged(AdminUserGroupModel augm)
        {
            AdminContrTransporter.SelectedItemId2 = augm.SelectedGroupId ?? 0;

            UserFitlerModel            = augm.Filter;

            return RedirectToAction("UserToGroupView", "Admin");
        }