private void BindPOList()
{
var dt = PO_Header.RetrieveData(oCon, txtSearchItem.Text);
grvPOList.DataSource = dt;
grvPOList.DataBind();
}
protected void GetPO()
{
var ldata = PO_Header.RetrieveData(oCon, txtSearch.Text.Trim());
grvMainPO.DataSource = ldata;
grvMainPO.DataBind();
grvMainPO.GridLines = GridLines.None;
}