c#控制IE浏览器自动点击等事件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，并執行提交按鈕的click動作即可進行搜索；
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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;
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//...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();
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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，并確定
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);
?? }
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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 ?
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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
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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();
????????}
}
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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);
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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);
posted on 2018-03-20 15:29 NET未來之路 閱讀(...) 評論(...) 編輯 收藏轉載于:https://www.cnblogs.com/lonelyxmas/p/8609563.html
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