/// <summary>
        /// Calls the frmAccountLedger form on btnCashOrBank click to create a new ledger
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnCashOrBank_Click(object sender, EventArgs e)
        {
            try
            {
                if (cmbCashOrBank.SelectedValue != null)
                {
                    strLedgerId = cmbCashOrBank.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.CallFromAdvancePayment(this);
                }
                else
                {
                    open.MdiParent = formMDI.MDIObj;
                    open.BringToFront();
                    open.CallFromAdvancePayment(this);
                    if (open.WindowState == FormWindowState.Minimized)
                    {
                        open.WindowState = FormWindowState.Normal;
                    }
                }

                this.Enabled = false;

            }
            catch (Exception ex)
            {
                MessageBox.Show("AP31:" + ex.Message, "OpenMiracle", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }