如何提高HttpWebRequest并发效率

[kitten_scratch]

我通过HttpWebRequest发起一个GET的Request，不需要等待服务器返回结果，只要发出请求即可。
请问我该怎么做？

[Gregorian]

public static void SendHttpRequest()
{
ThreadPool.QueueUserWorkItem(new WaitCallback(ThreadProc));

Console.WriteLine("Main thread does some work, then sleeps.");
// If you comment out the Sleep, the main thread exits before
// the thread pool task runs. The thread pool uses background
// threads, which do not keep the application running. (This
// is a simple example of a race condition.)
Thread.Sleep(10000);

Console.WriteLine("Main thread exits.");
}

// This thread procedure performs the task.
static void ThreadProc(Object stateInfo)
{
// send the http request
HttpWebRequest request = HttpWebRequest.CreateDefault(new Uri("http://www.sina.com.cn")) as HttpWebRequest;
WebResponse response = request.GetResponse();
}

[kitten_scratch]

[Quote=引用 1 楼 diffmaker 的回复:]
用异步请求
[/Quote]

从网上down国一个支持异步的类，测试了一下，每秒大概是7～8个请求发出，现在我需要每秒大概20个。

[kitten_scratch]

[Quote=引用 2 楼 Gregorian 的回复:]
public static void SendHttpRequest()
{
ThreadPool.QueueUserWorkItem(new WaitCallback(ThreadProc));

Console.WriteLine("Main thread does some work, then sleeps.");
// If you comment out the Sleep, the main thread exits before
// the thread pool task runs. The thread pool uses background
// threads, which do not keep…
[/Quote]

如果我要多个并发，那么如何调用？
谢谢...

[888228]

2楼想告诉你的应该是开多线程

[lovehongyun]

string strURL = "http://localhost/xxxx/xxxx.aspx?keyword=";
   strURL +=this.textBox1.Text;
   System.Net.HttpWebRequest request;
   //创建一个HTTP请求
   request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);
   //request.Method="get";
   System.Net.HttpWebResponse response;
   response = (System.Net.HttpWebResponse)request.GetResponse();
   System.IO.Stream s;
   s = response.GetResponseStream();
   XmlTextReader Reader = new XmlTextReader(s);
   Reader.MoveToContent();
   string strValue = Reader.ReadInnerXml();
   strValue = strValue.Replace("<","<");
   strValue = strValue.Replace(">",">");
   MessageBox.Show(strValue); 
   Reader.Close();

[jinjazz]

用WebClient

[lovehongyun]

string uri = " http://server/path/WebForm.aspx";

HttpWebRequest req = (HttpWebRequest)WebRequest.Create(uri);

req.Method = "GET";

req.MaximumAutomaticRedirections = 3;

req.Timeout = 5000;

Console.WriteLine("Sending HTTP request");

HttpWebResponse res = (HttpWebResponse)req.GetResponse();

Stream resst = res.GetResponseStream();

StreamReader sr = new StreamReader(resst);

Console.WriteLine("HTTP Response is: ");

Console.WriteLine(sr.ReadToEnd());

sr.Close();

resst.Close();

[diffmaker]

用异步请求