public FaceRecognitionLoginForm()
        {
            InitializeComponent();
            HasLoggedOn = false;            //默认未登陆

            var iniMgr = new CIniManager(@"Config\Admin.ini");

            if (!iniMgr.ExistIniFile())            //若配置文件不存在则退出
            {
                MessageBox.Show("缺少配置文件");
                Environment.Exit(Environment.ExitCode);
            }
            if (iniMgr.IniReadValue("FacialSecurity", "Signed") == "false")
            {
                btnLogin.Enabled = false;                //若没注册则没法登陆
            }

            //Load of previus trainned faces and labels for each image

            if (Eigen_Recog.IsTrained)
            {
                message_bar.Text  = "现在可以进行识别登陆!";
                btnSignIn.Visible = false;
            }
            else
            {
                message_bar.Text  = "没有发现存储的用户脸部图像, 请先注册!";
                btnSignIn.Visible = true;
            }
        }
        private void btnSignIn_Click(object sender, EventArgs e)
        {
            //Stop Camera
            stop_capture();

            //OpenForm
            var signDlg = new SignInForm(this);

            signDlg.Show();

            if (signDlg.DialogResult == DialogResult.OK)
            {
                var iniMgr = new CIniManager(@"Config\Admin.ini");
                if (iniMgr.ExistIniFile() && iniMgr.IniReadValue("FacialSecurity", "Signed") == "true")               //验证配置文件
                {
                    btnLogin.Enabled = true;
                }
            }
        }