private void billViewToolStripMenuItem_Click(object sender, EventArgs e)
{
frmIPBillView f = new frmIPBillView();
f.TABLE_NAME = "tblPurchaseBrief";
f.ShowDialog();
}
private void btnFInvoice_Click(object sender, EventArgs e)
{
frmIPBillView f = new frmIPBillView();
f.TABLE_NAME = "tblSaleBrief";
f.ShowDialog();
txtRefNo.Text = f.BILLNO;
txtRefNo.Focus();
}