private void LoadBatchSummary()
{
Facade.IPreInvoice facPreInvoice = new Facade.PreInvoice();
DataSet ds = facPreInvoice.GetSummaryForBatchForSubbySelfBill(BatchID);
grdSubbies.DataSource = ds;
lblInvoicedate.Text = facPreInvoice.GetBatchInvoiceDate(BatchID).ToString("dd/MM/yyyy");
}