ASP.NET MVC - 反序列化SOAP Web服务的响应

This is my code in MVC:

这是我在MVC中的代码：

    string url = "https://api....";
    HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
    httpWebRequest.Method = "POST";
    httpWebRequest.ContentType = "application/x-www-form-urlencoded";

    string postData = "<?xml version=\"1.0\"?>" +
                        "<request>" +
                            "<login>" + Login + "</login>" +
                            "<password>" + Password + "</password>" +
                            "<limit>" +
                                "<offset>10</offset>" +
                                "<limit>10</limit>" +
                            "</limit>" +
                        "</request>";

    try
    {
        using (StreamWriter requestWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
        {
            requestWriter.Write(postData);
        }
    }
    catch (System.Net.WebException ex)
    {
        return null;
    }

    HttpWebResponse httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
    Stream responseStream = httpWebResponse.GetResponseStream();
    StreamReader streamReader = new StreamReader(responseStream);
    var serializer = new System.Xml.Serialization.XmlSerializer(typeof(Class.hotels));
    Class.hotels hotel = (Class.hotels)serializer.Deserialize(streamReader);
    streamReader.Close();
    responseStream.Close();
    httpWebResponse.Close();
    st