public static ui_update_notename GetInstance(User _user, Friend _friend)
        {
            if (instance == null)
            {
                instance = new ui_update_notename(_user, _friend);
            }

            return(instance);
        }
 private void ui_update_notename_FormClosing(object sender, FormClosingEventArgs e)
 {
     instance = null;
 }