Question

I am going to try my best to keep this post short and concise. I apologize in advance if I need to make a number of edits to add code.

The problem

I have a class I am able to serialize into XML correctly. The class sends the XML to a web service that returns a XML response. The XML response is then deserialized into objects for additional processing. I am able to properly deserialize my objects, providing that the returned XML is not a sequence

What I have tried

I have created my class to look like:

[other class declarations here to support XML response]

public class OrderInfoListResponse
{
    public List<OrderInfo> OrderInfo { get; set; }

    public OrderInfoListResponse()
    {
        OrderInfo = new List<OrderInfo>();
    }
}

The deserializer looks like:

using (Stream respStream = response.GetResponseStream())
{
    XmlSerializer serializer = new XmlSerializer(typeof(OrderListResponse));
    orderResp = serializer.Deserialize(respStream) as OrderListResponse;
}

If I pass in data that looks like:

 <ResponseBody>
    <PageInfo>
       <TotalCount>51</TotalCount>
       <TotalPageCount>6</TotalPageCount>
       <PageSize>10</PageSize>
       <PageIndex>1</PageIndex>
 </PageInfo>
 <RequestID>4546ASDDAS54</RequestID>
 <OrderInfoList>
        <OrderInfo>
            <SellerID>XXXX</SellerID>
            <OrderNumber>111111111</OrderNumber>
            <InvoiceNumber>222222</InvoiceNumber>
            ....
        </OrderInfo>
 <OrderInfoList> 

I am able to get the PageInfo data and RequestID with no isses, but my resulting object shows

OrderInfoList
    OrderInfo count = 0

If I display the response as a string I get 51 responses.

The question

Why am I not able to deserialize into OrderInfo?

What I’ve tried

I tried the following code, but my count is still 0:

using (Stream respStream = response.GetResponseStream())
{
    StreamReader readerOK = new StreamReader(respStream);
    string resp = @readerOK.ReadToEnd();
    var myEncoder = new ASCIIEncoding();
    var bytes = myEncoder.GetBytes(resp);
    var memoryStream = new MemoryStream(bytes);
    var xmlSerializer = new XmlSerializer(typeof(OrderListResponse));
    orderResp = xmlSerializer.Deserialize(memoryStream) as OrderListResponse;
 }

Setting a breakpoint on myEncoder shows that string resp contains a full XML response, setting a breakpoint after orderResp shows all fields are set, except for the list objects.

I have instantiated my orderResp object via setting it to null at the start of the method. I have also instantiated every instance of an object contained within that class, both with no results.

If I remove all collections (lists, arrays etc ) from the classes, I am able to deserialize the first response in the XML file, subsequent responses are not deserialized and are skipped.

Any other ideas? Anyone?

Answer 1

The issue was how the class was created.

The original class looked like:

public class OrderListResponseBody
{

    public PageInfo PageInfo { get; set; }  
    public string RequestID { get; set; }  
    public string RequestDate { get; set; } 
    public List<OrderInfoListResponse> OrderInfoList { get; set; }  
}

The new class looks like:

public class OrderListResponseBody
{

    public PageInfo PageInfo { get; set; }  
    public string RequestID { get; set; }  
    public string RequestDate { get; set; } 
    public List<OrderInfo> OrderInfoList { get; set; }  <!-- notice the change
}