private void btnPostTpAcc_Click(object sender, EventArgs e)
        {

            string respond = "";
            if (MessageBox.Show("Do you want post this to account ? ", "Confirmation", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == System.Windows.Forms.DialogResult.Yes)
            {
                MyTransaction = new AccountTranaction(Program.AccountStatic.LoggingAsLocal);
                int VoucherStatus = MyPay.GetPVNStatus(txtPVNno.Text);
                switch (VoucherStatus)
                {
                    case 0:
                        Program.VerningMessage("This is not Approved Voucher !!!......");
                        break;
                    case 1:
                        Program.VerningMessage("This is not Approved Voucher !!!......");
                        break;
                    case 2:
                        string PVN = "";
                        respond = MyTransaction.DoPaymentTransaction(_ExtData, Program.AccountStatic.UserName, out PVN);
                        if (respond == "True")
                        {
                            txtPVNno.Text = PVN;
                            Program.InformationMessage("Successfully Posted to Account !!!!");
                        }
                        else
                        {
                            Program.VerningMessage(respond);
                        }
                        break;
                    case 3:
                        Program.VerningMessage("Already Accounted!!! you cannot change ......");
                        break;
                    default:
                        break;
                }
            }
        }