private void dg_lb_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
        {      
            string lbid=e.Item.Cells[0].Text.Trim();
            string lbname_New =((TextBox)e.Item.Cells[1].Controls[0]).Text.Trim();
            if(lbnameis_repeat(lbname_New))
            {            
                OracleBase ob=new OracleBase(1);
                ob.Open();
                string name_str="update t_lb set lb_name='"+lbname_New+"'  where  lb_id='"+lbid+"' ";
            
                ob.ExecSQLCommand(name_str);                
                dg_lb.SelectedIndex=-1;
                this.dg_lb.EditItemIndex=-1;
                getjclb();
                            
                                            
                Response.Write("<script>alert('保存成功！');</script>");
            }    
            else
            {
                Response.Write("<script>alert('监测类别名称重复，请重新输入！');</script>");
            }
                    
        }