public void WorkOnTenant_Handler()
        {
            // Work on a specific tenant
            // Input the first name and the last name of the tenant to work on
            string firstName = null;
            string lastName  = null;

            if (!terminalDevice.GetTenantName(ref firstName, ref lastName))
            {
                return;
            }
            if (TenantData.FindTenant(firstName, lastName, ref currentTenant))
            {
                terminalDevice.ShowTenantMenuDialog();
            }
        }
 public void DisplayBarList_Handler()
 {
     // call "void DisplayList(object[] list)" to list Bar Numbers
     TenantData.FindTenant(currentTenant.firstName, currentTenant.lastName, ref currentTenant);
     terminalDevice.DisplayList(currentTenant.barredList.toObjectArray(currentTenant.barredList.barredNumbers));
 }