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PODeserializing XML doesn't work for one field
 

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  1. PODeserializing XML doesn't work for one field
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    <p>I'm trying to deserialize an XML stream into an object. It works perfectly for all but one field and I can't figure out what is wrong with that field. To make sure I know what I'm dealing with, I've coded the XML string directly.</p> <pre><code>[DataContract(Name = "auth")] public class Authorization { [DataMember(Name = "status")] public string Status { get; set; } [DataMember(Name = "user_name")] public string UserName { get; set; } [DataMember(Name = "person_pk")] public string PersonID { get; set; } } StringBuilder sb = new StringBuilder(); sb.Append("&lt;auth xmlns=\"http://schemas.datacontract.org/2004/07/Veracross\"&gt;"); sb.Append("&lt;status&gt;success&lt;/status&gt;"); sb.Append("&lt;person_pk&gt;2516&lt;/person_pk&gt;"); sb.Append("&lt;user_name&gt;scohen&lt;/user_name&gt;"); sb.Append("&lt;/auth&gt;"); string fixedXMLData = sb.ToString(); DataContractSerializer serializer = new DataContractSerializer(typeof(Authorization)); MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(fixedXMLData)); Authorization Auth = (Authorization)serializer.ReadObject(stream); </code></pre> <p>When I test the Auth object after execution I find that Status and UserName are properly populated. PersonID is null. I've tried changing the field names in the XML string, reordering the fields, changing the content of the person_pk field, etc. Nothing makes it work.</p> <p>Now here's where it gets weird - If I change "person_pk" to "test" everywhere, it works fine and I get the correct value for PersonID. However, if I swap "person_pk" for "person" or "pk" it still doesn't work? In reality, I'm getting this XML string from a RESTful service and have no control over the naming of the fields. The field is named "person_pk", I just can't figure out why it won't properly deserialize.</p> <p>Any idea?</p> <p>Thanks</p> <p>THE SOLUTION: I updated my DataMember attributes to include the Order attribute:</p> <pre><code>[DataContract(Name = "auth")] public class Authorization { [DataMember(Name = "status", Order=0)] public string Status { get; set; } [DataMember(Name = "person_pk", Order=1)] public string PersonID { get; set; } [DataMember(Name = "user_name", Order=2)] public string UserName { get; set; } } </code></pre>
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