用 dataview 抓 gridview 資料出來

  protected void btnEXPORT_Click(object sender, EventArgs e)
    {
        gv_Master.ReNewData();
        DataView dvSel = new DataView(gv_Master.TempTable, "SEL = 'Y' AND TEL1 <> ''", "", DataViewRowState.CurrentRows);
        txtTEL.Text = string.Empty;

        foreach (DataRowView drv in dvSel)
        {
            txtTEL.Text += drv["TEL1"].ToString() + ",";
        }
        txtTEL.Text = txtTEL.Text.IndexOf(',') >= 0 ? txtTEL.Text.TrimEnd(',') : txtTEL.Text;
    }