private void EditButton_Click(object sender, RoutedEventArgs e)
 {
     if (dgWeaponList.SelectedIndex != -1)
     {
         WeaponEditor editor = new WeaponEditor();
         editor.EditWeapon((Weapon)dgWeaponList.SelectedItem);
         if (editor.ShowDialog() == true)
         {
             Update();
             hasChanged = true;
         }
     }
 }