protected void Save(object sender, EventArgs e)
        {
            if (!Page.IsValid) return;

            _groupViewModel = GetGroupViewModel();
            var groupViewModel = new GroupViewModel
            {
                DisplayName = txtName.Text,
                Description = txtDescription.Text,
                VisibilityType = _groupViewModel.VisibilityType
            };

            var grouping = new Grouping(_environmentParametersViewModel);
            Guid roleId = grouping.CopyGroup(groupViewModel, SessionObject.LoggedInUser.School, RoleId, _rolePortalId);
            string script = string.Format("CloseDialog('{0}');", roleId.ToString());
            ScriptManager.RegisterStartupScript(Page, typeof(Page), "closeScript", script, true);
        }