利用WebBrowser实现自动登入功能

公司内部改革，对考勤方面做出调整，要求实现办公自动化，在OA进行上下班考勤；作为程序员，突发奇想如何实现自动化考勤应用？

需求如下：

1. 可设置考勤地址、用户信息、上下班时间；
2. 根据设置的上下班时间，定时实现自动考勤。

具体实现步骤如下：

1. 窗体界面添加考勤地址、用户信息、上班下班时间、WebBrowser控件；
2. 将WebBrowser地址更改为考勤地址
3. 判断WebBrowser加载完毕后，输入用户、密码信息，点登录进入系统
4. 采用线程阻塞形式，预估登入进入系统时间，再进入考勤菜单进行考勤

代码实现如下：

    public partial class Form1 : Form
    {
        /// <summary>
        /// 计数器判断网页是否加载完毕
        /// </summary>
        int i = 0;
        //登入计时器
        int j = 0;
        //上班计时器
        int m = 0;
        public Form1()
        {
            InitializeComponent();
            txtUrl.Enabled = false;
            txtUser.Enabled = false;
            txtPwd.Enabled = false;
            tdtstartTime.Enabled = false;
            tdtendTime.Enabled = false;

            wm = GetWork();
            webBrowser.Url = wm.Url;

            webBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBw_DocumentCompleted);
            webBrowser.Navigated += new WebBrowserNavigatedEventHandler(webBrowser_Navigated);

        }

        /// <summary>
        /// 用计数器判断界面是否加载完成
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void webBrowser_Navigated(object sender, WebBrowserNavigatedEventArgs e)
        {
            i++;
        }
        void webBw_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            i--;
            if (0 == i)
            {
                if (j < 1)
                {
                    Lognin();
                    j++;
                }
                if (m < 1 && j > 0)
                {
                    HtmlDocument htmlDoc = webBrowser.Document;
                    HtmlElement txtMenuCodeQuick = htmlDoc.All["MenuCodeQuick"];
                    if (txtMenuCodeQuick != null)
                    {
                        txtMenuCodeQuick.Focus();
                        txtMenuCodeQuick.SetAttribute("value", "HR43B");
                        SendKeys.SendWait("{ENTER}");
                        m++;
                    }
                }
            }
        }

        /// <summary>
        /// 登录
        /// </summary>
        void Lognin()
        {
            HtmlDocument htmlDoc = webBrowser.Document;
            HtmlElement txtUser = htmlDoc.All["txtUserCodeL"];
            txtUser.Focus();
            if (txtUser != null)
            {
                txtUser.SetAttribute("value", wm.User);
            }
            SendKeys.SendWait(Keys.Tab.ToString());
            HtmlElement txtPassword = htmlDoc.GetElementById("txtPasswordL");
            if (txtPassword != null)
            {
                txtPassword.SetAttribute("value", wm.Password);
            }
            Thread.Sleep(1000);

            HtmlElement btnDl = htmlDoc.GetElementById("ctl00$ctl00$c1$CB$btnLogin");
            btnDl.InvokeMember("click");
            Thread.Sleep(1000);
        }

        private Workmanger GetWork()
        {
            Uri u = new Uri(txtUrl.Text);
            wm.Url = u;
            wm.User = txtUser.Text;
            wm.Password = txtPwd.Text;
            wm.StratTime = tdtstartTime.Time;
            wm.EndTime = tdtendTime.Time;
            return wm;
        }

        //根据指定url地址打开页面
        void OpenIE(Uri url)
        {
            webBrowser.Url = url;
        }

        private Workmanger wm = new Workmanger();

        void EndWork()
        {
            HtmlDocument htmlDoc = webBrowser.Document;
            HtmlElement rtbText = htmlDoc.All["ctl00_ctl00_c1_H1_WsdBasicToolBar1"];
            StringBuilder sb = new StringBuilder();
            foreach (HtmlElement item in htmlDoc.All)
            {
                sb.AppendLine(item.Id);
            }
            File.WriteAllText(@"d:\html.txt", sb.ToString(), Encoding.UTF8);
         }
    }

    /// <summary>
    /// 考勤系统类
    /// </summary>
    public class Workmanger
    {
        /// <summary>
        /// 地址
        /// </summary>
        public Uri Url { get; set; }
        /// <summary>
        /// 用户名
        /// </summary>
        public string User { get; set; }

        /// <summary>
        /// 密码
        /// </summary>
        public string Password { get; set; }

        /// <summary>
        /// 上班时间
        /// </summary>
        public DateTime? StratTime { get; set; }

        /// <summary>
        /// 下班时间
        /// </summary>
        public DateTime? EndTime { get; set; }
    }