//To create a new Account Ledger using btnAccountLedgerAdd
        private void btnAccountLedgerAdd_Click(object sender, EventArgs e)
        {
            try
            {
                if (cmbCashOrBankAcc.SelectedValue != null)
                {
                    strledgerId = cmbCashOrBankAcc.SelectedValue.ToString();
                }
                else
                {
                    strledgerId = string.Empty;
                }
                frmAccountLedger frmAccountledger = new frmAccountLedger();
                frmAccountledger.MdiParent = formMDI.MDIObj;

                frmAccountLedger open = Application.OpenForms["frmAccountLedger"] as frmAccountLedger;
                if (open == null)
                {
                    frmAccountledger.WindowState = FormWindowState.Normal;
                    frmAccountledger.MdiParent = formMDI.MDIObj;
                    frmAccountledger.CallFromMonthlySalaryVoucher(this);
                }
                else
                {
                    open.MdiParent = formMDI.MDIObj;
                    open.BringToFront();
                    open.CallFromMonthlySalaryVoucher(this);
                    if (open.WindowState == FormWindowState.Minimized)
                    {
                        open.WindowState = FormWindowState.Normal;
                    }
                }
                this.Enabled = false;
            }
            catch (Exception ex)
            {
                MessageBox.Show("MSV29:" + ex.Message, "OpenMiracle", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }