Serialize. ANYTHING.

SerializationExtensions.cs

public static class SerializationExtensions
{
  public static string Serialize<T>( this T obj )
  {
    var serializer = new DataContractSerializer( obj.GetType() );
    using ( var writer = new StringWriter() )
    {
      using ( var stm = new XmlTextWriter( writer ) )
      {
        serializer.WriteObject( stm, obj );
        return writer.ToString();
      }
    }
  }

  public static T Deserialize<T>( this string serialized )
  {
    var serializer = new DataContractSerializer( typeof( T ) );
    using ( var reader = new StringReader( serialized ) )
    {
      using ( var stm = new XmlTextReader( reader ) )
      {
        return (T)serializer.ReadObject( stm );
      }
    }
  }
}