/// <summary> /// This method invokes method for opening a window for adding employees. /// </summary> public void AddExecute() { try { if (managers.CheckIfManagerExists()) { AddEmployee form = new AddEmployee(); form.ShowDialog(); EmployeeList = employees.GetAllEmployees(); } else { MessageBox.Show("Please create a manager first.", "Notification.", MessageBoxButton.OK); } } catch (Exception ex) { MessageBox.Show(ex.ToString()); } }