private void Button_Click_renovation(object sender, RoutedEventArgs e)
        {
            var renovation_list = new RenovationList();

            renovation_list.Show();
            this.Close();
        }
 private void Button_Click_Back(object sender, RoutedEventArgs e)
 {
     if (RenovationList == null)
     {
         RenovationList = new RenovationList();
     }
     RenovationList.Show();
     this.Close();
 }
 private void Button_Click_Renovation(object sender, RoutedEventArgs e)
 {
     rl = new RenovationList();
     rl.Show();
     this.Close();
 }