C # code Implementation Baidu Search page page traversal

usingSystem;usingSystem.Collections.Generic;usingSystem.ComponentModel;usingSystem.Data;usingSystem.Drawing;usingSystem.Text;usingSystem.Windows.Forms;usingmshtml;usingSystem.Threading;usingmshtml;namespacewindowsformsapplication3{ Public Partial classForm1:form { PublicForm1 () {InitializeComponent (); }        /// <summary>        ///open a Web page in a control/// </summary>         Public voidBaidu () {stringURL ="http://www.baidu.com/s?wd="+TextBox1.Text; WebBrowser1.Navigate (URL.        Trim ()); }        Private voidButton1_Click (Objectsender, EventArgs e)                    {Baidu (); }        /// <summary>        ///opening a new page does not jump to another browser/// </summary>        /// <param name= "Sender" ></param>        /// <param name= "E" ></param>        Private voidWebbrowser1_newwindow (Objectsender, CancelEventArgs e) {E.cancel=true;        WebBrowser1.Navigate (Webbrowser1.statustext); }        /// <summary>        ///get all nodes of Web page, traverse all nodes, if tagged text value is "next page", simulate click, go to Next page/// </summary>         Public voidBianli () {IHTMLDocument2 doc= WebBrowser1.Document.DomDocument asIHTMLDocument2; foreach(IHTMLElement eleinchdoc.all) {if(Ele.innertext = ="Next page >") {Ele.click ();  Break; }            }        }        /// <summary>        ///To interpret whether the Web page is loading completed/// </summary>        /// <param name= "Sender" ></param>        /// <param name= "E" ></param>        Private voidWebbrowser1_documentcompleted (Objectsender, WebBrowserDocumentCompletedEventArgs e) {            if(e.url==webBrowser1.Document.Url) {Bianliwangye (); }        }        Private voidButton2_Click (Objectsender, EventArgs e) {            //Bianli ();Bianliwangye (); }        /// <summary>        ///enumeration gets all URLs of Baidu search page/// </summary>         Public voidBianliwangye () {IHTMLDocument2 document= (IHTMLDocument2) webBrowser1.Document.DomDocument;//Get Source codeIHTMLElementCollection HC = (ihtmlelementcollection) document.all;//Get all Tags//MessageBox.Show (HC. ToString ());            foreach(IHTMLElement HinchHc//Traverse Tags            {                if(h.classname=="g"|| h.classname=="C-showurl")//classname interpretation by label                {                    stringA= h.innerhtml;//get label text content                    if(A.contains (" in"))                    {                        intb = A.indexof (" in"); stringA1 = A.substring (0, b);//Intercept URLsMessageBox.Show (A1); }}} Bianli ();//when enumerating to the last URL of the current page, simulate click to go to the next page}}} copy code

C # code Implementation Baidu Search page page traversal