private void BtnAddEmployee_Click(object sender, RoutedEventArgs e)
        {
            frmEmployeeDetails window = new frmEmployeeDetails(_userManager);

            if (window.ShowDialog() == true)
            {
                populateUserList();
                lblStatusMessage.Content = "New Employee Record Saved!";
            }
        }
        private void showPopulatedEmployeeDetailWindow()
        {
            User user = (User)dgUserList.SelectedItem;

            if (user != null)
            {
                frmEmployeeDetails window = new frmEmployeeDetails(user, _user, _userManager);
                if (window.ShowDialog() == true)
                {
                    populateUserList();
                    lblStatusMessage.Content = "Changes to Employee: " + user.FirstName + " " +
                                               user.LastName + ", Saved!";
                }
            }
        }