private void Btn_edit_service_Click(object sender, RoutedEventArgs e)
 {
     if (Lbx_Offered_Services.SelectedItem == null)
     {
         MessageBox.Show("Please select an item to edit service");
     }
     else
     {
         var         editService = Lbx_Offered_Services.SelectedItem as Servicesinfo;
         AddServices add         = new AddServices(editService, Btn_edit_service.ToString());
         add.Show();
     }
 }
        private void Btn_Add_New_Service_Click(object sender, RoutedEventArgs e)
        {
            AddServices add = new AddServices(null, Btn_Add_New_Service.Content.ToString());

            add.Show();
        }