下载网页的最快 C# 代码
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Fastest C# Code to Download a Web Page
提问by Krishna Kumar
Given a URL, what would be the most efficient code to download the contents of that web page? I am only considering the HTML, not associated images, JS and CSS.
给定一个 URL，下载该网页内容的最有效代码是什么？我只考虑 HTML，不考虑相关图像、JS 和 CSS。
采纳答案by John Sheehan
public static void DownloadFile(string remoteFilename, string localFilename)
{
WebClient client = new WebClient();
client.DownloadFile(remoteFilename, localFilename);
}
回答by Chris
From MSDN:
来自 MSDN：
using System;
using System.Net;
using System.IO;
public class Test
{
public static void Main (string[] args)
{
if (args == null || args.Length == 0)
{
throw new ApplicationException ("Specify the URI of the resource to retrieve.");
}
WebClient client = new WebClient ();
// Add a user agent header in case the
// requested URI contains a query.
client.Headers.Add ("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)");
Stream data = client.OpenRead (args[0]);
StreamReader reader = new StreamReader (data);
string s = reader.ReadToEnd ();
Console.WriteLine (s);
data.Close ();
reader.Close ();
}
}
回答by Adam Haile
Use the WebClient class from System.Net; on .NET 2.0 and higher.
使用 System.Net 中的 WebClient 类；在 .NET 2.0 及更高版本上。
WebClient Client = new WebClient ();
Client.DownloadFile("http://mysite.com/myfile.txt", " C:\myfile.txt");
回答by EKanadily
here is my answer ,a method that takes a URL and return a string
这是我的答案，一种采用 URL 并返回字符串的方法
public static string downloadWebPage(string theURL)
{
//### download a web page to a string
WebClient client = new WebClient();
client.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)");
Stream data = client.OpenRead(theURL);
StreamReader reader = new StreamReader(data);
string s = reader.ReadToEnd();
return s;
}
回答by liang
public static void DownloadString (string address)
{
WebClient client = new WebClient ();
string reply = client.DownloadString (address);
Console.WriteLine (reply);
}
回答by AmirMehdi KhademAstaneh
I think this is the fastest (download speed time with low latency) solution for download.
我认为这是最快的（低延迟下载速度时间）下载解决方案。
// WebClient vs HttpClient vs HttpWebRequest vs RestSharp
// ?? ????? ?? ???? ??? ??? ???????? ????
HttpWebRequest Request = (HttpWebRequest)WebRequest.Create(url);
Request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
Request.Proxy = null;
Request.Method = "GET";
using (WebResponse Response = Request.GetResponse())
{
using (StreamReader Reader = new StreamReader(Response.GetResponseStream()))
{
return Reader.ReadToEnd();
}
}
