private void btnExport_Click(object sender, EventArgs e)
{
//dataGridView1.DataSource = SqlTsk.GetTable("procGetSymData 'GCVN'");
dataGridView1.DataSource = SqlTsk.GetTable("procGetInstData");
ExlAddin.Write2Exl exportWork = new ExlAddin.Write2Exl();
exportWork.WriteInExl(mkExportSht());
}