现在的问题是如何构建的HttpWebRequest 所以查询服务器会认为它来自一个浏览器？

The question is how to construct HttpWebRequest so queried server will think it comes from a browser?

推荐答案

您可以设置User-Agent HTTP请求头。

You could set the User-Agent HTTP request header.

var request = (HttpWebRequest)WebRequest.Create("http://www.google.com");
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2";

如果你的工作与的WebClient ：

using (var client = new WebClient())
{
    client.Headers[HttpRequestHeader.UserAgent] = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2";
    ...
}