c#控制IE瀏覽器自動點擊等事件WebBrowser，mshtml.IHTMLDocument2

可以實現例如通過應用程序操作google搜索，用戶輸入要搜索的內容，然后在google中搜索；可以自動點擊網頁上的按鈕等功能

    1. 加入對Microsoft Internet Controls的引用；
    2. 加入對Microsoft HTML Object Library的引用；

（要引入Microsoft.mshtml.dll 地址是C:\Program Files\Microsoft.NET\Primary Interop Assemblies）
    3. 通過mshtml.IHTMLDocument2、SHDocVw.InternetExplorer、SHDocVw.ShellWindowsClass獲取當前打開的google搜索頁面的IE窗口句柄；
    4. 根據3返回的句柄，獲得當前打開的google頁面的mshtml.IHTMLDocument2對象；
    5. 根據4返回的IHTMLDocument2對象，獲得搜索輸入框和提交按鈕（可查看google頁面源文件，確認輸入框和提交按鈕的類型和名字）；
    6. 在搜索輸入框中輸入要搜索的內容，並執行提交按鈕的click動作即可進行搜索；

 

簡單來說：

打開ie：

SHDocVw.ShellWindows shellWindows = new SHDocVw.ShellWindowsClass();
object objFlags = 1;
object objTargetFrameName = "";
object objPostData = "";
object objHeaders = "";
SHDocVw.InternetExplorer webBrowser1= (SHDocVw.InternetExplorer)shellWindows.Item(shellWindows.Count-1);
webBrowser1.Navigate(“http://www.google.cn”, ref objFlags, ref objTargetFrameName, ref objPostData, ref objHeaders);

(可以簡略點寫：object c=null; myWeb.Navigate("http://zhidao.baidu.com/",ref c,ref c,ref c,ref c); )
mshtml.IHTMLDocument2 htmlDoc = webBrowser1.Document as mshtml.IHTMLDocument2;

 

//...獲取WebBroswer中的body代碼
mshtml.HTMLDocumentClass doc=(mshtml.HTMLDocumentClass)myWeb.Document;
mshtml.HTMLBody body=(mshtml.HTMLBody)docCC.body;
string html=body.innerHTML.ToString();
//...如果里面有Form，要給里面的text填充信息
mshtml.IHTMLDocument2 doc2=(mshtml.IHTMLDocument2)myWeb.Document;
mshtml.IHTMLElementCollection inputs;
inputs=(mshtml.IHTMLElementCollection)doc2.all.tags("INPUT");
mshtml.IHTMLElement element=(mshtml.IHTMLElement)inputs.item("userName",0);
mshtml.IHTMLInputElement inputElement=(mshtml.IHTMLInputElement)element;
inputElement.value="填充信息";
//...要點擊里面的某個按鈕
mshtml.IHTMLDocument2 doc2=(mshtml.IHTMLDocument2)myWeb.Document;
mshtml.IHTMLElementCollection inputs;
inputs=(mshtml.IHTMLElementCollection)doc2.all.tags("INPUT");
mshtml.IHTMLElement element=(mshtml.IHTMLElement)inputs.item("SubmitBut",0);
element.click();

 

1、根據元素ID獲取元素的值。

比如要獲取<img class="" id="regimg" src="/register/checkregcode.html?1287068791" width="80" height="22">這個標簽里的src屬性的值：

mshtml.IHTMLDocument2 doc2 = (mshtml.IHTMLDocument2)webBrowser1.Document;
mshtml.IHTMLElement img = (mshtml.IHTMLElement)doc2.all.item("regimg", 0);

string imgUrl = (string)img.getAttribute("src");

2、填寫表單，並確定

mshtml.IHTMLElement loginname = (mshtml.IHTMLElement)doc2.all.item("loginname", 0);
    mshtml.IHTMLElement loginPW = (mshtml.IHTMLElement)doc2.all.item("password", 0);
    mshtml.IHTMLElement loginBT = (mshtml.IHTMLElement)doc2.all.item("formsubmit", 0);
    mshtml.IHTMLElement loginYZ = (mshtml.IHTMLElement)doc2.all.item("regcode", 0);
    loginname.setAttribute("value", tbLoginName.Text);
    loginPW.setAttribute("value", tbLoginPassWord.Password);
    loginYZ.setAttribute("value", tbYZ.Text);
    loginBT.click();

3、獲取源碼

textBox1.Text = doc2.body.innerHTML;

4、執行JS

mshtml.IHTMLWindow2 win = (mshtml.IHTMLWindow2)doc2.parentWindow;
win.execScript("changeRegImg()", "javascript");//使用JS

5、禁止JS，WPF下目前發現唯一適用的一種方法：

public void HideScriptErrors(WebBrowser wb, bool Hide)
   {

    FieldInfo fiComWebBrowser = typeof(WebBrowser).GetField("_axIWebBrowser2", BindingFlags.Instance | BindingFlags.NonPublic);

    if (fiComWebBrowser == null) return;

    object objComWebBrowser = fiComWebBrowser.GetValue(wb);

    if (objComWebBrowser == null) return;

    objComWebBrowser.GetType().InvokeMember(

    "Silent", BindingFlags.SetProperty, null, objComWebBrowser, new object[] { Hide });

   }

   void webBrowser1_Navigated(object sender, NavigationEventArgs e)
   {

    HideScriptErrors(webBrowser1,

    true);

   }

 

 

 

下面是另外一遍博客里寫的比較好的

#region Search   
        public static void Search(string searchText)  
        {  
            SHDocVw.InternetExplorer ieWnd = GetIEWndOfGoogle();  
            mshtml.IHTMLDocument2 ieDoc = GetIEDocOfGoogle(ref ieWnd);  
 
            System.Diagnostics.Trace.Assert(ieDoc != null);  
            SearchTextInGoogle(ieDoc, searchText);  
 
            //activate ie window   
            SetForegroundWindow(ieWnd.HWND);              
        }  
        #endregion  
 
        #region get ie window of google page   
        public static SHDocVw.InternetExplorer GetIEWndOfGoogle()  
        {  
            mshtml.IHTMLDocument2 ieDoc;  
            SHDocVw.InternetExplorer ieWnd = null;  
            SHDocVw.ShellWindowsClass shellWindows = new SHDocVw.ShellWindowsClass();  
 
            foreach (SHDocVw.InternetExplorer ie in shellWindows)  
            {  
                //if it is ie window   
                if (ie.FullName.ToUpper().IndexOf("IEXPLORE.EXE") > 0)  
                {  
                    //get the document displayed   
                    ieDoc = (mshtml.IHTMLDocument2)ie.Document;  
                    if (ieDoc.title.ToUpper().IndexOf("GOOGLE") >= 0)  
                    {  
                        ieWnd = ie;  
                        break;  
                    }  
                }  
            }  
              
            shellWindows = null;  
 
            return ieWnd;  
        }  
        #endregion  
 
        #region get ie document of google page   
        public static mshtml.IHTMLDocument2 GetIEDocOfGoogle(ref SHDocVw.InternetExplorer ieWnd)  
        {  
            object missing = null;  
            mshtml.IHTMLDocument2 ieDoc;  
 
            if (ieWnd == null)  
            {  
                ieWnd = new SHDocVw.InternetExplorer();  
                ieWnd.Visible = true;  
                ieWnd.Navigate("http://www.google.com", ref missing, ref missing, ref missing, ref missing);  
 
                //wait for loading completed, or using DocumentComplete Event   
                while (ieWnd.StatusText.IndexOf("完成") == -1)  
                    Application.DoEvents();  
            }  
 
            ieDoc = (mshtml.IHTMLDocument2)ieWnd.Document;  
            return ieDoc;  
        }  
        #endregion
#region Search the given text in google   
        ///// <summary>   
        /// search the given text in google home page   
        /// we can see the source file of google home page to confirm the elements we need   
        /// the html file of google home page is as follows   
        ///    
        /// <table cellpadding=0 cellspacing=0>   
        ///     <tr valign=top>   
        ///         <td width=25%> </td>   
        ///         <td align=center nowrap>   
        ///             <input name=hl type=hidden value=zh-CN>   
        ///             <input autocomplete="off" maxlength=2048 name=q size=55 title="Google 搜索" value="">   
        ///             <br>   
        ///             <input name=btnG type=submit value="Google 搜索">   
        ///             <input name=btnI type=submit value=" 手氣不錯 ">   
        ///         </td>   
        ///         ...   
        ///// </summary>           
        public static void SearchTextInGoogle(mshtml.IHTMLDocument2 ieDoc, string searchText)  
        {  
            mshtml.HTMLInputElementClass input;  
 
            //set the text to be searched   
            foreach (mshtml.IHTMLElement ieElement in ieDoc.all)  
            {  
                //if its tag is input and name is q(question)   
                if (ieElement.tagName.ToUpper().Equals("INPUT"))  
                {  
                    input = ((mshtml.HTMLInputElementClass)ieElement);  
                    if (input.name == "q")  
                    {  
                        input.value = searchText;  
                        break;  
                    }  
                }  
            }  
 
            //click the submit button to search   
            foreach (mshtml.IHTMLElement ieElement in ieDoc.all)  
            {  
                //if its tag is input   
                if (ieElement.tagName.ToUpper().Equals("INPUT"))  
                {  
                    input = (mshtml.HTMLInputElementClass)ieElement;  
                    if (input.name == "btnG")  
                    {  
                        input.click();  
                        break;  
                    }  
                }  
            }  
        }  
        #endregion 

 

參考文章：

http://blog.csdn.net/livelylittlefish/archive/2008/08/25/2829873.aspx

http://hi.baidu.com/andyleesoft/blog/item/802e02289fcc1f94023bf66a.html

http://zhidao.baidu.com/question/48084010.html

 

另外一個例子

IHTMLDocument2 doc = webbrowser.Document.DomDocument as IHTMLDocument2;
IHTMLBodyElement bodyElement = doc.body as IHTMLBodyElement;
if (bodyElement != null)
{

        IHTMLTxtRange range = bodyElement.createTextRange();
        HTMLDocumentClass documentClass = wb1.Document.DomDocument as HTMLDocumentClass;
        IHTMLElement caret_pos = documentClass.getElementById("caret_pos");
        if (caret_pos != null)
       {
               range.moveToElementText(caret_pos);
               range.select();
        }
}

 

2011-3-14添加

給html元素添加事件

IHTMLElement ieElement = .......

((mshtml.HTMLElementEvents2_Event)ieElement).onclick += new mshtml.HTMLElementEvents2_onclickEventHandler(this.element_onClick);

 

public bool element_onClick(mshtml.IHTMLEventObj e)
{。。。。}

要在程序中出發html中的事件，這個想用什么eventhandler之類的，搞了半天都沒有研究出來，資料又搜不到，最后用執行js的方法實現之：

js觸發事件：

var oEvent = document.createEventObject();

document.getElementById('addrCity').fireEvent('onchange', oEvent);