/// <summary>
/// 加載網(wǎng)頁，模擬登錄動作處理
/// </summary>
private void ProcessLogin()
{
  // 驗證配置文件
  if (string.IsNullOrEmpty(url))
  {
    ShowMsg("配置文件錯誤");
    return;
  }
 
  ShowMsg("正在加載登錄網(wǎng)頁...");
  // 加載網(wǎng)頁
  webBrowser1.Navigate(url);
  //等待瀏覽器控件加載完成
  while (webBrowser1.ReadyState != WebBrowserReadyState.Complete)
  {
    Application.DoEvents();
  }
  ShowMsg("加載完畢!");
  //模擬登錄事件
  LoginSimulation(webBrowser1);
}
//模擬登錄事件
private void LoginSimulation(WebBrowser wb)
{
  try
  {
    ShowMsg(string.Format("賬戶名:[{0}]，輸入賬戶密碼...", userName));
    ShowMsg(string.Format("請確保配置文件中的用戶及登錄密碼準確可用"));
 
    // 網(wǎng)頁元素
    HtmlDocument doc = wb.Document;
    HtmlElement emuser = doc.GetElementById("user");
    SetHtmlValue(emuser, userName);//設置賬戶
    HtmlElement empassword = doc.GetElementById("password");
    SetHtmlValue(empassword, password);//設置密碼
    HtmlElement btn = doc.GetElementById("Login");
    InvokeMethod(btn, "click");//調(diào)用 登錄按鈕的 Click 事件 提交配置
 
    ShowMsg("完成!");
    TimeSpan used = DateTime.Now - begin;//用時
    ShowMsg(string.Format("用時: {0}.{1}s" , used.Seconds, used.Milliseconds));
    ShowMsg("即將自動退出...");
 
    //啟動計時器，4s 后自動退出當前程序
    Timer timer = new Timer();
    timer.Interval = 4000;
    timer.Tick += new EventHandler(timer_Tick);
    timer.Start();
  }
  catch (Exception ex)
  {
    ShowMsg(ex.Message);
  }
}

編譯應用程序，把快捷方式添加到開機啟動項。這樣開機時就會自動運行程序接入網(wǎng)絡啦！??！

不足之處：

1. 接入網(wǎng)絡成功后網(wǎng)頁會彈出如下的對話框，因此模擬登錄成功后也會啟動瀏覽器打開頁面。如果能禁用就更好了。

2. 只能簡單地提示模擬操作完成，調(diào)用登錄按鈕事件后沒有檢測是否登錄成功。

關于以上2點不足，如果有人找到解決辦法，就請大膽大意地私信筆者或留言吧 ^_^

適用場景：

本應用演示了如何在客戶端加載頁面并模擬鍵盤鼠標操作，適用于用戶訪問許可配置保存于服務器的登錄網(wǎng)站，那些配置要保存到 Session(會話)的網(wǎng)站訪問例如淘寶登錄就不適用了，除非繼續(xù)使用應用程序中的 WebBrowser 控件操作而不用外部瀏覽器。

附界面全部代碼及運行截圖

（代碼有點亂，將就著看 -_-|||）

后臺代碼：

using System;
using System.IO;
using System.Text;
using System.Windows.Forms;
 
namespace LoginAssistant
{
  public partial class MainForm : Form
  {
    public MainForm()
    {
      InitializeComponent();
      readConfigFile();
      ProcessLogin();
    }
 
    /// <summary>
    /// 加載網(wǎng)頁，模擬登錄動作處理
    /// </summary>
    private void ProcessLogin()
    {
      // 驗證配置文件
      if (string.IsNullOrEmpty(url))
      {
        ShowMsg("配置文件錯誤");
        return;
      }
 
      ShowMsg("正在加載登錄網(wǎng)頁...");
      // 加載網(wǎng)頁
      webBrowser1.Navigate(url);
      //等待瀏覽器控件加載完成
      while (webBrowser1.ReadyState != WebBrowserReadyState.Complete)
      {
        Application.DoEvents();
      }
      ShowMsg("加載完畢!");
      //模擬登錄事件
      LoginSimulation(webBrowser1);
    }
 
    //模擬登錄事件
    private void LoginSimulation(WebBrowser wb)
    {
      try
      {
        ShowMsg(string.Format("賬戶名:[{0}]，輸入賬戶密碼...", userName));
        ShowMsg(string.Format("請確保配置文件中的用戶及登錄密碼準確可用"));
 
        // 網(wǎng)頁元素
        HtmlDocument doc = wb.Document;
        HtmlElement emuser = doc.GetElementById("user");
        SetHtmlValue(emuser, userName);//設置賬戶
        HtmlElement empassword = doc.GetElementById("password");
        SetHtmlValue(empassword, password);//設置密碼
        HtmlElement btn = doc.GetElementById("Login");
        InvokeMethod(btn, "click");//調(diào)用 登錄按鈕的 Click 事件 提交配置
 
        ShowMsg("完成!");
        TimeSpan used = DateTime.Now - begin;//用時
        ShowMsg(string.Format("用時: {0}.{1}s" , used.Seconds, used.Milliseconds));
        ShowMsg("即將自動退出...");
 
        //啟動計時器，4s 后自動退出當前程序
        Timer timer = new Timer();
        timer.Interval = 4000;
        timer.Tick += new EventHandler(timer_Tick);
        timer.Start();
      }
      catch (Exception ex)
      {
        ShowMsg(ex.Message);
      }
    }
    //自動退出
    void timer_Tick(object sender, EventArgs e)
    {
      this.Close();
    }
    /// <summary>
    /// 調(diào)用 Html 元素的方法
    /// </summary>
    /// <param name="em"></param>
    /// <param name="methodname"></param>
    private void InvokeMethod(HtmlElement em, string methodname)
    {
      if (em == null) return;
      object response = em.InvokeMember(methodname); //觸發(fā)submit事件
    }
 
    //賦值于 Html 元素
    private void SetHtmlValue(HtmlElement em, string valueStr)
    {
      if (em == null) return;
      em.SetAttribute("value", valueStr);
    }
 
    //讀取配置文件
    private void readConfigFile()
    {
      try
      {
        if(!File.Exists(fileName))return;
        using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read))
        {
          StreamReader m_streamReader = new StreamReader(fs);
          m_streamReader.BaseStream.Seek(0, SeekOrigin.Begin);
          string strLine = m_streamReader.ReadLine();
          while (strLine != null)
          {
            string[] data = strLine.Split('=');
            switch (data[0])
            {
              case "user":
                userName = getValue(data);
                break;
              case "password":
                password = getValue(data);
                break;
              case "url":
                url = getValue(data);
                break;
              default:
                break;
            }
            strLine = m_streamReader.ReadLine();
          }
          m_streamReader.Close();
          fs.Close();
        }
      }
      catch (Exception ex)
      {
        ShowMsg(ex.Message);
      }
    }
 
    /// <summary>
    /// 獲取取配置文件節(jié)點值
    /// </summary>
    /// <param name="arrays"></param>
    /// <returns></returns>
    private string getValue(string[] arrays)
    {
      StringBuilder sb = new StringBuilder();
      sb.Append(arrays[1]);
      for (int i = 2; i < arrays.Length; i++)
      {
        sb.Append("=" + arrays[i]);
      }
      return sb.ToString();
    }
 
    /// <summary>
    /// 顯示信息
    /// </summary>
    /// <param name="p"></param>
    private void ShowMsg(string p)
    {
      rtbStatus.AppendText(string.Format("[{0}] {1}\r\n",DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff"), p));
    }
 
    #region variables
 
    //賬號、密碼
    private string userName = "allliangkaiyu"; // default
    private string password = "vicky";
 
    private string url = string.Empty; //登錄頁面
 
    string fileName = "WirelessAssistantConfig.ini"; //配置文件名
    WebBrowser webBrowser1 = new WebBrowser();//瀏覽器控件
    private DateTime begin = DateTime.Now;//當前時刻
 
    #endregion
 
    #region 按鈕事件
     
    //登錄
    private void btnRegister_Click(object sender, EventArgs e)
    {
      ProcessLogin();
    }
 
    //退出
    private void btnExit_Click(object sender, EventArgs e)
    {
      this.Close();
    }
    #endregion
 
  }
}

designer.cs 代碼：

namespace LoginAssistant
{
  partial class MainForm
  {
    /// <summary>
    /// Required designer variable.
    /// </summary>
    private System.ComponentModel.IContainer components = null;
 
    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
    protected override void Dispose(bool disposing)
    {
      if (disposing && (components != null))
      {
        components.Dispose();
      }
      base.Dispose(disposing);
    }
 
    #region Windows Form Designer generated code
 
    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
      System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm));
      this.btnInput = new System.Windows.Forms.Button();
      this.rtbStatus = new System.Windows.Forms.RichTextBox();
      this.btnExit = new System.Windows.Forms.Button();
      this.SuspendLayout();
      //
      // btnInput
      //
      this.btnInput.Font = new System.Drawing.Font("Consolas", 10F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
      this.btnInput.Location = new System.Drawing.Point(46, 235);
      this.btnInput.Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
      this.btnInput.Name = "btnInput";
      this.btnInput.Size = new System.Drawing.Size(86, 36);
      this.btnInput.TabIndex = 0;
      this.btnInput.Text = "重新登錄";
      this.btnInput.UseVisualStyleBackColor = true;
      this.btnInput.Click += new System.EventHandler(this.btnRegister_Click);
      //
      // rtbStatus
      //
      this.rtbStatus.BackColor = System.Drawing.SystemColors.Control;
      this.rtbStatus.Dock = System.Windows.Forms.DockStyle.Top;
      this.rtbStatus.Location = new System.Drawing.Point(0, 0);
      this.rtbStatus.Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
      this.rtbStatus.Name = "rtbStatus";
      this.rtbStatus.Size = new System.Drawing.Size(322, 229);
      this.rtbStatus.TabIndex = 1;
      this.rtbStatus.Text = "";
      //
      // btnExit
      //
      this.btnExit.Font = new System.Drawing.Font("Consolas", 10F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
      this.btnExit.ForeColor = System.Drawing.Color.Red;
      this.btnExit.Location = new System.Drawing.Point(150, 235);
      this.btnExit.Name = "btnExit";
      this.btnExit.Size = new System.Drawing.Size(75, 36);
      this.btnExit.TabIndex = 2;
      this.btnExit.Text = "退出";
      this.btnExit.UseVisualStyleBackColor = true;
      this.btnExit.Click += new System.EventHandler(this.btnExit_Click);
      //
      // MainForm
      //
      this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 13F);
      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
      this.ClientSize = new System.Drawing.Size(322, 274);
      this.Controls.Add(this.btnExit);
      this.Controls.Add(this.rtbStatus);
      this.Controls.Add(this.btnInput);
      this.Font = new System.Drawing.Font("Consolas", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
      this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
      this.Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
      this.Name = "MainForm";
      this.Text = "無線網(wǎng)絡助手 V20160908© vicky";
      this.ResumeLayout(false);
 
    }
 
    #endregion
 
    private System.Windows.Forms.Button btnInput;
    private System.Windows.Forms.RichTextBox rtbStatus;
    private System.Windows.Forms.Button btnExit;
  }
}

運行截圖：