学步园

/**
  * 会员卡升级
  *
  * @param MemberCard $MemberCard
  * @param Balance $Balance
  */
 function UpdateMemberCard(MemberCard $MemberCard,Balance $Balance)
 {
  try {
   if($MemberCard->SN!=''){
    $this->DAL->UpdateMemberCard($MemberCard,$Balance);
   }
   else {
    throw new Exception ( '卡号不能为空' );
   }
  }
  catch ( Exception $Err ) {
   throw new Exception ( $Err->getMessage () );
  }
 }