private void Button_修改_Click(object sender, RoutedEventArgs e) { if (DataGrid_权限设置.SelectedItem != null) { Model_用户 m = DataGrid_权限设置.SelectedItem as Model_用户; Pop.系统管理.Page_修改用户 p = new Pop.系统管理.Page_修改用户(m.ID); this.Grid_Pop弹出.Visibility = Visibility; this.Frame_系统管理_Pop.Content = p; p.CloseEvent += new Pop.系统管理.Page_系统管理_CloseEventHandle(CloseGrid); } else { MessageBoxCommon.Show("请选择需要修改的用户"); } }