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copied!<p><strong>TLDR:</strong> Use <code>XmlSerializer</code> to deserialize from xml dialects you can't control; <code>ServiceStack</code> is designed for code-first development and <strong>can not</strong> be adapted to general purpose xml parsing.</p> <hr> <p>ServiceStack.Text does <em>not</em> implement a custom Xml serializer - it uses <code>DataContractSerializer</code> under the hood. <code>FromXml</code> is merely syntactic sugar.</p> <h2>Using <code>DataContractSerializer</code> to parse Xml</h2> <p>As you've noticed, <code>DataContractSerializer</code> is picky about <strong>namespaces</strong>. One approach is to specify the namespace explicitly on the class, but if you do this, you'll need to specify <code>[DataMember]</code> everywhere since it assumes that if anything is explicit, everything is. You can work around this problem using an assembly-level attribute (e.g. in AssemblyInfo.cs) to declare a default namespace:</p> <pre><code>[assembly: ContractNamespace("", ClrNamespace = "My.Namespace.Here")] </code></pre> <p>This solves the namespace issue.</p> <p>However, you cannot solve 2 other issues with DataContractSerializer:</p> <ul> <li>It will not use attributes (in your case, <code>version</code>)</li> <li>It requires that collections such as <code>item</code> have both a wrapping name and an element name (something like items and item)</li> </ul> <p>You cannot work around these limitations because <strong><code>DataContractSerializer</code> is not a general-purpose XML parser</strong>. It is intended to easily produce and consume an API, not map arbitrary XML onto a .NET datastructure. You will never get it to parse rss; so therefore ServiceStack.Text (which just wraps it) can also not parse it.</p> <p>Instead, use <code>XmlSerializer</code>.</p> <h2>Using <code>XmlSerializer</code></h2> <p>This is rather straighforward. You can parse input with something along the lines of:</p> <pre><code>var serializer = new XmlSerializer(typeof(RSS)); RSS rss = (RSS)serializer.Deserialize(myXmlReaderHere); </code></pre> <p>The trick is to annotate the various fields such that they match your xml dialect. For example, in your case that would be:</p> <pre><code>[XmlRoot("rss")] public class RSS { [XmlAttribute] public string version { get; set; } public ChannelClass channel { get; set; } } public class ChannelClass { public string title { get; set; } public string ttl { get; set; } public string description { get; set; } public string link { get; set; } public string copyright { get; set; } public string language { get; set; } public string pubDate { get; set; } [XmlElement] public List<ItemClass> item { get; set; } } public class ItemClass { public string title { get; set; } public string link { get; set; } public string description { get; set; } public string guid { get; set; } } </code></pre> <p>So some judicious attributes suffice to get it to parse the XML as you want.</p> <p>In summary: you <strong>cannot</strong> use ServiceStack for this since it uses <code>DataContractSerializer</code>.ServiceStack/<code>DataContractSerializer</code> are designed for scenarios where you control the schema. <strong>Use <code>XmlSerializer</code> instead.</strong> </p>

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