private void UserInviteClick(object sender, System.Windows.RoutedEventArgs e)
{
var username = UserInvite.Text;
string factoryString = (string)FactoryList.SelectedItem;
int factoryID = getIdFromFactoryString(factoryString);
ClientServerUtil csu = ClientServerUtil.getInstance();
String message = csu.addMemberToMemberAccess(factoryID, username, factoryString);
showPopUp(message);
UserInvite.Clear();
}