将Xml反序列化为对象时出错-{ <string xmlns='http://tempuri.org/'> 没想到。}

Question

I have problem when try to deserializing XML to object, I got on error message

"There is an error in XML document (2, 2)."

With innerException :

"<string xmlns='http://tempuri.org/'> was not expected."

I have try solution in these link : Error Deserializing Xml to Object - xmlns='' was not expected , xmlns=''> was not expected. - There is an error in XML document (2, 2) while DeserializeXml to object

but still not resolve my problem..

Here is my code:

    bulk_response result = ConvertXMLString.convertXMLStringToObject<bulk_response>(response);

here is my Deserializing code :

public static T convertXMLStringToObject<T>(string input) where T : class
        {
            try
            {
                System.Xml.Serialization.XmlSerializer ser = new System.Xml.Serialization.XmlSerializer(typeof(T));

                using (StringReader sr = new StringReader(input))
                {
                    return (T)ser.Deserialize(sr);
                    sr.Close();
                }
            }
            catch (Exception ex)
            {
                return null;
            }
        }

and here is my class:

  public class bulk_response
    {
        public string status_code { get; set; }
        public string status_text { get; set; }
        public string transaction_id { get; set; }
    }

what is the issue i couldn't find ?

Update : This is the xml i get from http post response:

<?xml version="1.0" encoding="utf-8"?>
<string xmlns="http://tempuri.org/"><?xml version="1.0" encoding="utf-16"?>
<bulk_response xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <status_code>hansen</status_code>
  <status_text>angie</status_text>
  <transaction_id>ini testing aja</transaction_id>
</bulk_response></string>

and this is how i passing data via http post and get the response :

HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(destinationUrl);
// add the parameters as key valued pairs making
// sure they are URL encoded where needed
ASCIIEncoding encoding = new ASCIIEncoding();
byte[] postData = encoding.GetBytes(param);
httpReq.ContentType = "application/x-www-form-urlencoded";
httpReq.Method = "POST";
httpReq.ContentLength = postData.Length;
// convert the request to a steeam object and send it on its way
Stream ReqStrm = httpReq.GetRequestStream();
ReqStrm.Write(postData, 0, postData.Length);
ReqStrm.Close();
// get the response from the web server and
// read it all back into a string variable
HttpWebResponse httpResp = (HttpWebResponse)httpReq.GetResponse();
StreamReader respStrm = new StreamReader(
httpResp.GetResponseStream());
string result = respStrm.ReadToEnd();
httpResp.Close();
respStrm.Close();

return result;

Answer 1

How do you serialize your XML? It looks pretty messed up.

1. The additional <?xml ... after the <string> tag looks quite strange to me. I have never seen this. Is this valid XML?
2. When you deserialze an object from XML, the serializer expectes the root node to be named like the class. This is what <string> was not expected. means - it'd expect a bulk_response -tag instead
3. The closing-tag of status_text is no closing-tag, should be <status_text>angie</status_text>
4. Having xmlns definitions on different levels is also uncommon (if it's legal XML at all) - but I do not see why you need them at all, you could just leave them

Having said that, after simplifying your XML to

<?xml version="1.0" encoding="utf-8"?>
<bulk_response>
  <status_code>hansen</status_code>
  <status_text>angie</status_text>
  <transaction_id>ini testing aja</transaction_id>
</bulk_response>

your code works like a charm. The issue does not seem to be the deserializing code, but the serializing code on the server side.