private void msbTrans_FA_DLBankRecieptVoucher_Click(object sender, EventArgs e)
{
if (childBankRecieptVoucher == null || childBankRecieptVoucher.Text == "")
{
childBankRecieptVoucher = new BankRecieptVoucher();
childBankRecieptVoucher.MdiParent = this;
childBankRecieptVoucher.Show();
}
}