public void AddEmployee(string no, string firstName, string lastName)
 {
     try
     {
         CronusReference.Employee emp = new CronusReference.Employee();
         emp.No        = no;
         emp.FirstName = firstName;
         emp.LastName  = lastName;
         Employees.Add(emp);
         cronusClient.AddEmployee(no, firstName, lastName);
     }
     catch (Exception ex)
     {
         Status = ExceptionHandler.GetErrorMessage(ex);
     }
 }