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POXML serialization options in .NET
 

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    <p>I'm building a service that returns an XML (no SOAP, no ATOM, just plain old XML). Say that I have my domain objects already filled with data and just need to transform them to the XML format. What options do I have on .NET?</p> <p>Requirements:</p> <ul> <li>The transformation is not 1:1. Say that I have an Address property of type Address with nested properties like Line1, City, Postcode etc. This may need to result in an XML like <code>&lt;xaddr city="..."&gt;Line1, Postcode&lt;/xaddr&gt;</code>, i.e. quite different.</li> <li>Some XML elements/attributes are conditional, for example, if a Customer is under 18, the XML needs to contain some additional information.</li> <li>I only need to serialize the objects to XML, the other direction (XML to objects) is not important</li> <li>Some technologies, i.e. Data Contracts use .NET attributes. Other means of configuration (external XML config, buddy classes etc.) would be a plus.</li> </ul> <p>Here are the options as I see them as the moment. Corrections / additions will be very welcome.</p> <ul> <li>String concatenation - forget it, it was a joke :)</li> <li><strong>Linq 2 XML</strong> - complete control but quite a lot of hand written code, would need good suite of unit tests</li> <li><strong>View engines</strong> in ASP.NET MVC (or even Web Forms theoretically), the logic being in controllers. It's a question how to structure it, I can have simple rules engine in my controller(s) and one view template per each possible output, or have the decision logic directly in the template. Both have upsides and downsides.</li> <li><strong>XML Serialization</strong> - I'm not sure about the flexibility here</li> <li><strong>Data Contracts</strong> from WCF - not sure about the flexibility either, plus would they work in a simple ASP.NET MVC app (non-WCF service)? Are they a super-set of the standard XML serialization now?</li> <li>If it exists, some <strong>XML-to-object mapper</strong>. The more I think about it the more I think I'm looking for something like this but I couldn't find anything appropriate.</li> </ul> <p>Any comments / other options?</p>
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    1. COYou said you want "an XML-to-object mapper" but you also said you want only to serialize objects to XML, not the other way. Which is it? In fact, XmlSerializer and DataContractSerializer do *both*; though it's common for an application to use them in only one direction.
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    2. COYou're right, that was confusing. I only need the objects-to-XML direction.
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