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I think I'm missing something in my C# Serialization understanding.

I am serializing a C# class to XML to transfer across a web service. For simplicity's sake, I have a class with only three properties:
public partial class MyInfo : SerializableObject
   private string ssnField;
   private string suffixField;
   private integer suffixIDField;
   public MyInfo()
      this.ssnField = string.Empty;
      this.suffixField = string.Empty;
      this.suffixIDField = 0;
   public string SSN
      get { return this.ssnField; }
      set { this.ssnField = value; }
   public string Suffix
      get { return this.suffixField; }
      set { this.suffixField = value; }
   public integer SuffixID
      get { return this.suffixIDField; }
      set { this.suffixIDField = value; }

And here's the gist of the serializer:
using (XmlTextWriter xmlTextWriter = new XmlTextWriter(memoryStream, Encoding.UTF8) { Formatting = Formatting.Indented })
   xmlSerializer.Serialize(xmlTextWriter, this);						
   memoryStream = (MemoryStream)xmlTextWriter.BaseStream;				
   xmlText = new UTF8Encoding().GetString(memoryStream.ToArray());

And here's my output: Neither SSN or Suffix get set beyond the string.empty call. SSN shows up in the XML, Suffix does not. Anyone know why?

<SSN />

I'd prefer to not pass empty fields (like Suffix) but I'd settle to know why one appears, and one does not.

Thanks much.
Posted 12-Dec-12 4:17am
Updated 12-Dec-12 4:25am
Pablo Aliskevicius 12-Dec-12 10:40am
What happens if your string variables have actual values?
dexterama 12-Dec-12 10:42am
They appear as they should - one appears one does not, if they have no value.

1 solution

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Solution 1

I found the answer! It was an missing descriptor:

[XmlElement(IsNullable = true)]
public string SSN

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