C# 如何在c语言中读取多部分流的http响应#

我需要使用c#从http服务器接收响应；标题将包含

Content-Type: multipart/x-mixed-replace; boundary=userdata

答复的主体将类似于以下内容：

--userdata
Content-type: text/plain
Content-length: <length-of-content>

UserId: <user-Id>
ParentId: <parent-Id>
ParentName: <parent-name>
Time: <time>

--userdata
Content-type: text/plain
Content-length: <length-of-content>

UserId: <user-Id>
ParentId: <parent-Id>
ParentName: <parent-name>
Time: <time>

我已经编写了以下代码，但没有结果，请帮助：

NetworkCredential networkCredential = new NetworkCredential(this.UserName, this.Password);

string requestingURL = "http://" + this.UserName + ":" + this.Password + "@" +this.UserIp+ ":" + this.PortNo + "/transactionDataStream";

Uri uri = new Uri(requestingURL);

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);    
request.Credentials = networkCredential;
HttpWebResponse Answer = (HttpWebResponse)request.GetResponse();
Stream aStream = Answer.GetResponseStream();
StreamReader aStreamReader = new StreamReader(aStream);

string response = aStreamReader.ReadToEnd();

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我以前用过这个，效果很好

Http多部分解析器完全按照它在tin上声明的那样：解析多部分/表单数据。这个特定的解析器非常适合解析流中的大型数据，因为它不试图一次读取整个流，而是为文件数据生成一组流

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也许我错过了什么，但是什么导致了这种反应？你是否制作了一个API或者是其他什么？根据我的经验，包含此类信息的有效负载响应以JSON或XML的形式发送-这样，您可以解析/处理接收到的数据，但您尚未真正说明要发送回的数据。此项目不兼容，并且未在我的VS2013中运行。此项目仅与.net framework 4.5兼容，但我使用的是framework 4.0。请提供帮助

http://username:password@userIp:port-number/transactionStream

NetworkCredential networkCredential = new NetworkCredential(this.UserName, this.Password);

string requestingURL = "http://" + this.UserName + ":" + this.Password + "@" +this.UserIp+ ":" + this.PortNo + "/transactionDataStream";

Uri uri = new Uri(requestingURL);

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);    
request.Credentials = networkCredential;
HttpWebResponse Answer = (HttpWebResponse)request.GetResponse();
Stream aStream = Answer.GetResponseStream();
StreamReader aStreamReader = new StreamReader(aStream);

string response = aStreamReader.ReadToEnd();