MessageItemCtl msgctl=new MessageItemCtl();
msgctl.SendMessageToOA(this.Session["UserInterID"].ToString(),empid.ToString(),this.txtLotNO.Text.ToString()+"&Sequence="+sequence,Convert.ToInt32(this.Session["UserInterID"].ToString()),0,"App0001","WorkOrder:"+this.txtLotNO.Text.ToString(),this.txtLotNO.Text);可是我已经定义了  
why