no message

UICode/CustPOSendMailUI/WebPart/CustPOSendMailUIFormWebPartCodeBehindExtend.cs

@@ -318,7 +318,10 @@ namespace UFIDA.U9.Cust.WC.CustPOSendMailUI
 
                     mailMessage += @"   </table></body></html>";
 
-                    message.CC.Add(PurMail);//采购员抄送人邮箱
+                    if (!string.IsNullOrEmpty(PurMail))
+                    {
+                        message.CC.Add(PurMail);//采购员抄送人邮箱
+                    }
                     message.CC.Add("yu.zhou@panawincn.com");//采购经理抄送人邮箱
 
                     message.Body = mailMessage;// mailContent;//邮件内容