Use. NET Framework provides the WebClient class and the WebRequest class, we can easily get the source code of the given URL address, very simple, the following is a complete example of C #.

Last Update:2017-02-28 Source: Internet

Author: User

Tags gettext visual studio

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. NET Framework |client|request|web| source code

getpagehtml.aspx<%...@ Page language= "C #" validaterequest = "false" codebehind= "GetPageHtml.aspx.cs"
Autoeventwireup= "false" inherits= "eMeng.Exam.GetPageHtml"%>
<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 transitional//en" >
<HTML>
<HEAD>
<title> get the page source code </title>
<meta name= "generator" content= "Microsoft Visual Studio 7.0" >
<meta name= "Code_language" content= "C #" >
<meta name= "vs_defaultClientScript" content= "JavaScript" >
<meta name= "vs_targetschema" content= "http://schemas.microsoft.com/intellisense/ie5" >
</HEAD>
<body ms_positioning= "GridLayout" >
<form id= "Aspnetbuffer" method= "POST" runat= "Server" >
<div align= "center" style= "Font-weight:bold" > get any Web source code </div>
<asp:textbox id= "Urltext" runat= "Server" width= "400px" >http://dotnet.aspx.cc/content.aspx
</asp:TextBox>
<asp:button id= "Webclientbutton" runat= "server" text= "WebClient" ></asp:Button>
<asp:button id= "Webrequestbutton" runat= "Server" text= "WebRequest" ></asp:Button>
<br>
<asp:textbox id= "contenthtml" runat= "Server" width= "100%" height= "360px" textmode= "MultiLine" >
</asp:TextBox>
</form>
</body>
</HTML>

getpagehtml.aspx.csusing System;
Using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
Namespace Emeng.exam
... {
/**////<summary>
///getpagehtml's summary description.
///</summary>
public class GetPageHtml:System.Web.UI.Page
... {
protected System.Web.UI.WebControls.Button Webclientbutton;
protected System.Web.UI.WebControls.Button Webrequestbutton;
protected System.Web.UI.WebControls.TextBox contenthtml;
protected System.Web.UI.WebControls.TextBox Urltext;
protected System.Web.UI.WebControls.Button GetText;
private String pageurl = ";

private void Page_Load (object sender, System.EventArgs e)
... {}

Web Form Designer generated code#region Web Form Designer generated code
Override protected void OnInit (EventArgs e)
... {
InitializeComponent ();
Base. OnInit (e);
}

/**////<summary>
Designer supports required methods-do not use the Code editor to modify
The contents of this method.
</summary>
private void InitializeComponent ()
... {
This. Webclientbutton.click + = new System.EventHandler (this. Webclientbutton_click);
This. Webrequestbutton.click + = new System.EventHandler (this. Webrequestbutton_click);
This. Gettext.click + = new System.EventHandler (this. Gettext_click);
This. Load + = new System.EventHandler (this. Page_Load);

}
#endregion

private void Webclientbutton_click (object sender, System.EventArgs e)
... {
Pageurl = Urltext.text;
WebClient WC = new WebClient ();
Wc. Credentials = CredentialCache.DefaultCredentials;

/**////Method One:
byte[] Pagedata = WC. Downloaddata (Pageurl);
Contenthtml.text = Encoding.Default.GetString (pagedata);

/**////Method II:
Code Start **********
Stream resstream = WC. OpenRead (Pageurl);
StreamReader sr = new StreamReader (Resstream,system.text.encoding.default);
Contenthtml.text = Sr. ReadToEnd ();
Resstream.close ();
Code End ********
///
Wc. Dispose ();
}

private void Webrequestbutton_click (object sender, System.EventArgs e)
... {
pageurl = Urltext.text;
WebRequest request = WebRequest.Create (Pageurl);
webresponse response = Request. GetResponse ();
stream Resstream = response. GetResponseStream ();
streamreader sr = new StreamReader (Resstream, System.Text.Encoding.Default);
contenthtml.text = Sr. ReadToEnd ();
resstream.close ();
&NBSP;SR. Close ();
}

private void Gettext_click (object sender, System.EventArgs e)
... {
Pageurl = Urltext.text;
WebRequest request = WebRequest.Create (Pageurl);
WebResponse response = Request. GetResponse ();
Stream Resstream = Response. GetResponseStream ();
StreamReader sr = new StreamReader (Resstream, System.Text.Encoding.Default);
Contenthtml.text = Sr. ReadToEnd ();
Resstream.close ();
Sr. Close ();
Contenthtml.text = Regex.Replace (Contenthtml.text, "<[^>]*>", "");
Replace space
Contenthtml.text = Regex.Replace (Contenthtml.text, "\s+", "");
}
}
}

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