大多數C#程式設計師對於使用HttpRequest、HttpResponse、WebClient這樣的類向Web伺服器發出請求並取得響應結果並不陌生。

但有時我們想模擬使用者操縱瀏覽器的場景(尤其是在自動化測試時)，那麼我們可以選擇使用mshtml.dll和shdocvw.dll來完成對IE DOM的操作以實現此功能。

首先我們新建一個Console專案，並新增對mshtml.dll(新增引用--.NET選項卡--Microsoft.mshtml)和shdocvw.dll(新增引用--COM選項卡--Microsoft Internet Controls)的引用。

詳細內容請參考程式碼註釋

1. using System;  
2. using System.Diagnostics;  
3. using System.Threading;  
4. using mshtml;  
5. using SHDocVw;  
6. namespace IEDemo  
7. {  
8.     class Program  
9.     {  
10.         static AutoResetEvent documentComplete = new AutoResetEvent(false);  
11.         staticvoid Main(string[] args)  
12.         {  
13.             Console.WriteLine(DateTime.Now.ToString() + " 開始"
    );  
14.             InternetExplorer ie = GetInternetExplorer();  
15.             if (ie != null)  
16.             {  
17.                 Run(ie);  
18.             }  
19.             Console.WriteLine(DateTime.Now.ToString() + " 結束");  
20.         }  
21.         privatestatic InternetExplorer GetInternetExplorer()  
22.         {  
23.             InternetExplorer ie = null;  
24.             Console.WriteLine(DateTime.Now.ToString() + " 載入IE例項");  
25.             //查詢是否有開啟的IE程序視窗，如果已經包含CSDN登入頁，則得到此程序
26.             Process[] processes = Process.GetProcesses();  
27.             Process process = null;  
28.             foreach (Process p in processes)  
29.             {  
30.                 if (string.Compare(p.ProcessName, "iexplore", true) == 0)  
31.                 {  
32.                     if (p.MainWindowTitle.IndexOf("CSDN 使用者登入") >= 0) // CSDN 使用者登入 - Windows Internet Explorer
33.                     {  
34.                         process = p;  
35.                         break;  
36.                     }  
37.                 }  
38.             }  
39.             //如果沒有則啟動IE例項
40.             if (process == null)  
41.             {  
42.                 process = Process.Start("iexplore.exe", "about:blank");  
43.             }  
44.             if (process == null)  
45.             {  
46.                 Console.WriteLine(DateTime.Now.ToString() + " 無法啟動IE");  
47.                 returnnull;  
48.             }  
49.             Thread.Sleep(3000);  
50.             try
51.             {  
52.                 Console.WriteLine(DateTime.Now.ToString() + " Process Handle: " + process.MainWindowHandle.ToString());  
53.             }  
54.             catch (Exception ex)  
55.             {  
56.                 Console.WriteLine(ex.Message);  
57.                 returnnull;  
58.             }  
59.             ShellWindows browsers = new ShellWindows();  
60.             Console.WriteLine(DateTime.Now.ToString() + " 活動瀏覽器數量: " + browsers.Count);  
61.             if (browsers.Count == 0)  
62.             {  
63.                 Console.WriteLine(DateTime.Now.ToString() + " 未找到IE");  
64.             }  
65.             //如果找到匹配的IE程序，則把當前InternetExplorer物件連線到正在執行的IE程式
66.             Console.WriteLine(DateTime.Now.ToString() + " 附加到IE");  
67.             int i = 0;  
68.             while (i < browsers.Count && ie == null)  
69.             {  
70.                 InternetExplorer e = browsers.Item(i) as InternetExplorer;  
71.                 if (e != null)  
72.                 {  
73.                     if (e.HWND == (int)process.MainWindowHandle)  
74.                     {  
75.                         ie = e;  
76.                         break;  
77.                     }  
78.                 }  
79.                 ++i;  
80.             }  
81.             if (ie == null)  
82.             {  
83.                 Console.WriteLine(DateTime.Now.ToString() + " 附加到IE失敗");  
84.             }  
85.             return ie;  
86.         }  
87.         privatestaticvoid Run(InternetExplorer ie)  
88.         {  
89.             ie.DocumentComplete += new DWebBrowserEvents2_DocumentCompleteEventHandler(ie_DocumentComplete);  
90.             try
91.             {  
92.                 HTMLDocument document = null;  
93.                 object o = newobject();  
94.                 //導航到CSDN登入頁
95.                 ie.Navigate("http://passport.csdn.net/UserLogin.aspx?from=http://community.csdn.net/", ref o, ref o, ref o, ref o);  
96.                 documentComplete.WaitOne(1000, true);  
97.                 document = ie.Document as HTMLDocument;  
98.                 if (document != null)  
99.                 {  
100.                     //以下操縱IE Shell
101.                     HTMLInputButtonElement name = document.getElementById("ctl00_CPH_Content_tb_LoginNameOrLoginEmail") as HTMLInputButtonElement;  
102.                     if (name != null)  
103.                     {  
104.                         //csdn使用者名稱
105.                         name.value = "yourcsdnusername";  
106.                     }  
107.                     HTMLInputButtonElement password = document.getElementById("ctl00_CPH_Content_tb_Password") as HTMLInputButtonElement;  
108.                     if (password != null)  
109.                     {  
110.                         //csdn密碼
111.                         password.value = "yourcsdnpassword";  
112.                     }  
113.                     HTMLInputButtonElement imagecode = document.getElementById("ctl00_CPH_Content_tb_ExPwd") as HTMLInputButtonElement;  
114.                     if (imagecode != null)  
115.                     {  
116.                         Console.Write("輸入驗證碼:");  
117.                         //控制檯視窗輸入驗證碼
118.                         string code = Console.ReadLine();  
119.                         imagecode.value = code;  
120.                     }  
121.                     HTMLInputButtonElement submit = document.getElementById("ctl00_CPH_Content_Image_Login") as HTMLInputButtonElement;  
122.                     if (submit != null)  
123.                     {  
124.                         submit.click();  
125.                         documentComplete.WaitOne(1000, true);  
126.                     }  
127.                 }  
128.             }  
129.             catch (Exception ex)  
130.             {  
131.                 Console.WriteLine(ex.Message);  
132.             }  
133.         //    ie.Quit();
134.         }  
135.         privatestaticvoid ie_DocumentComplete(object pDisp, refobject URL)  
136.         {  
137.             documentComplete.Set();  
138.         }  
139.     }  
140. }