private void GetNewOrder() { DataTable dt = tmo_order.GetNeedOrderList(txtMatCode.Text, txtMatName.Text, txtStlGrd.Text, txtSpec.Text, ltlempname.Text, dropsalearea.SelectedItem.Text == "全部" ? "" : dropsalearea.SelectedItem.Text, txtStart.Value, txtEnd.Value, "", txtCustName.Text).Tables[0]; if (dt.Rows.Count > 0) { dtOrderEx = dt; rptNeedOrder.DataSource = dt; rptNeedOrder.DataBind(); ltlsumwgt.Text = dt.Compute("sum(N_WGT)", "true").ToString(); } else { rptNeedOrder.DataSource = null; rptNeedOrder.DataBind(); ltlsumwgt.Text = ""; } }