/// <summary>
 /// Restore Pet
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void bbiRestore_ItemClick(object sender, ItemClickEventArgs e)
 {
     if (petID != null) //check user is select pet
     {
         //restore pet
         PetModel pm = new PetModel();
         pm.RestorePet(petID);
         //send notify message for user
         XtraMessageBox.Show("Restore successful!!!", "Pet Shop", MessageBoxButtons.OK,
                             MessageBoxIcon.Information);
     }
     else    //if user is not selete pet then send error message
     {
         XtraMessageBox.Show("Please select a Pet item to restore!!!", "Pet Shop", MessageBoxButtons.OK,
                             MessageBoxIcon.Warning);
     }
 }