private void SqrList_Click(object sender, RoutedEventArgs e)
        {
            Window SqrList = new SqrOrder();

            SqrList.Show();
            this.Close();
        }
        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            Window back = new SqrOrder();

            back.Show();
            this.Close();
        }