阅读回复中的文字

HttpWebRequest request = WebRequest.Create("http://google.com") as HttpWebRequest;  

request.Accept = "application/xrds+xml";  
HttpWebResponse response = (HttpWebResponse)request.GetResponse();  

WebHeaderCollection header = response.Headers;

谷歌在这里返回文本。怎么看？

您"application/xrds+xml"给我的问题是，我收到的Content-Length为0（无响应）。

删除后，您可以使用访问响应response.GetResponseStream()。

HttpWebRequest request = WebRequest.Create("http://google.com") as HttpWebRequest;

//request.Accept = "application/xrds+xml";  
HttpWebResponse response = (HttpWebResponse)request.GetResponse();

WebHeaderCollection header = response.Headers;

var encoding = ASCIIEncoding.ASCII;
using (var reader = new System.IO.StreamReader(response.GetResponseStream(), encoding))
{
    string responseText = reader.ReadToEnd();
}

接受的答案未正确处理WebResponse或解码文本。此外，.NET 4.5中还有一种新方法可以做到这一点。

要执行HTTP GET并读取响应文本，请执行以下操作。

.NET 1.1版本4.0

public static string GetResponseText(string address)
{
    var request = (HttpWebRequest)WebRequest.Create(address);

    using (var response = (HttpWebResponse)request.GetResponse())
    {
        var encoding = Encoding.GetEncoding(response.CharacterSet);

        using (var responseStream = response.GetResponseStream())
        using (var reader = new StreamReader(responseStream, encoding))
            return reader.ReadToEnd();
    }
}

.NET 4.5

private static readonly HttpClient httpClient = new HttpClient();

public static async Task<string> GetResponseText(string address)
{
    return await httpClient.GetStringAsync(address);
}

我刚刚试过了自己，它给了我一个200 OK响应，但没有内容-内容长度为0。你肯定它给你的内容？无论如何，我假设您确实有内容。

返回实际文本依赖于知道编码，这可能很棘手。它应该在Content-Type标头中，但是您必须对其进行解析等。

但是，如果这实际上是XML（例如，来自“ http://google.com/xrds/xrds.xml ”），则要容易得多。只需将XML加载到内存中，例如通过LINQ to XML。例如：

using System;
using System.IO;
using System.Net;
using System.Xml.Linq;
using System.Web;

class Test
{
    static void Main()
    {
        string url = "http://google.com/xrds/xrds.xml";
        HttpWebRequest request = (HttpWebRequest) WebRequest.Create(url);

        XDocument doc;
        using (WebResponse response = request.GetResponse())
        {
            using (Stream stream = response.GetResponseStream())
            {
                doc = XDocument.Load(stream);
            }
        }
        // Now do whatever you want with doc here
        Console.WriteLine(doc);
    }   
}

如果内容是XML，得到的结果为XML对象模型（无论是XDocument，XmlDocument或XmlReader）可能比具有纯文本更有价值。

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://www.google.com");
request.Method = "GET";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();

Stream dataStream = response.GetResponseStream();
StreamReader reader = new StreamReader(dataStream);
string strResponse = reader.ReadToEnd();

本文对使用HttpWebResponse对象进行了很好的概述：如何使用HttpWebResponse

以下相关位：

HttpWebResponse webresponse;

webresponse = (HttpWebResponse)webrequest.GetResponse();

Encoding enc = System.Text.Encoding.GetEncoding(1252);
StreamReader loResponseStream = new StreamReader(webresponse.GetResponseStream(),enc);

string Response = loResponseStream.ReadToEnd();

loResponseStream.Close();
webresponse.Close();

return Response;

response.GetResponseStream()应该用于返回响应流。而且不要忘记close了Stream和Response对象。

如果您的http请求是Post，request.Accept = "application/x-www-form-urlencoded"; 那么我认为您可以通过以下代码获取respone的文本：

var contentEncoding = response.Headers["content-encoding"];
                        if (contentEncoding != null && contentEncoding.Contains("gzip")) // cause httphandler only request gzip
                        {
                            // using gzip stream reader
                            using (var responseStreamReader = new StreamReader(new GZipStream(response.GetResponseStream(), CompressionMode.Decompress)))
                            {
                                strResponse = responseStreamReader.ReadToEnd();
                            }
                        }
                        else
                        {
                            // using ordinary stream reader
                            using (var responseStreamReader = new StreamReader(response.GetResponseStream()))
                            {
                                strResponse = responseStreamReader.ReadToEnd();
                            }
                        }