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以下代码（在ASP.Net 2.0中运行）显示请求的URL 两次的内容。我只希望它显示一次所请求的URL的内容。我无法弄清楚我做错了什么。请求的URL是返回XML，如果我直接访问URL，它可以正常工作。为什么我从HttpWebResponse获得“双重响应”？
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
byte[] postDataBytes = Encoding.UTF8.GetBytes(postData);
request.Method = "POST";
request.ContentType = "application/xml";
request.ContentLength = postDataBytes.Length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(postDataBytes, 0, postDataBytes.Length);
requestStream.Close();
// get response and write to console
response = (HttpWebResponse) request.GetResponse();
StreamReader responseReader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
try {
Response.Write(responseReader.ReadToEnd());
}
finally {
responseReader.Close();
}
response.Close();