//登录失败
        private static void FailLogin(object source, LoginArgs e)
        {
            switch (e.FailureCode)
            {
            case 0:
                LoginErrorException noUserNameOrPwd = new LoginErrorException("未输入用户名和密码!");
                throw noUserNameOrPwd;

            case 1:
                LoginErrorException wrongPwd = new LoginErrorException("密码错误!");
                throw wrongPwd;

            case 2:
                LoginErrorException wrongUsername = new LoginErrorException("找不到用户!");
                throw wrongUsername;

            default:
                return;
            }
        }
 //登录成功
 private static void SuccessLogin(object source, LoginArgs e)
 {
 }