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POAdding and manipulating multiple child nodes using XPathNavigator in C#
 

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  1. POAdding and manipulating multiple child nodes using XPathNavigator in C#
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    <p>I'm writing classes which (de)serialize to/from XML. When serializing and deserializing, the class gets a XPathNavigator to get data from/add data to.</p> <p>Because the class may contain objects which are need to be serialized too (using the same mechanism), I do the following to add a child element for each object:</p> <pre><code>public void Serialize(XPathNavigator navigator) { foreach(IXmlSerializableObject o in objects) { // Create child element. navigator.AppendChildElement(string.Empty, "child", string.Empty, null); // Move to last child element. navigator.MoveToChild(XPathNodeType.Element); while (navigator.MoveToNext(XPathNodeType.Element)) ; // Serialize the object at the current node. // This will add attributes and child elements as required. // The navigator will be positiononed at the same node after the call. o.Serialize(navigator); navigator.MoveToParent(); } } </code></pre> <p>Especially the MoveToParent/Move to last child part seems to be awfully wrong (though it works). Is there a better way to do this?</p> <p>Another approach I use (to avoid that objects get access to information stored so far) is this:</p> <pre><code>foreach(IXmlSerializableObject o in objects) { { // Create a new (empty) document for object serialization. XPathNavigator instructionNavigator = new XmlDocument().CreateNavigator(); instructionNavigator.AppendChildElement(string.Empty, "child", string.Empty, null); instructionNavigator.MoveToChild(XPathNodeType.Element); // Serialize the object. o.Serialize(instructionNavigator); // Now add the serialized content to the navigator. instructionNavigator.MoveToRoot(); instructionNavigator.MoveToChild(XPathNodeType.Element); navigator.AppendChild(instructionNavigator); } </code></pre> <p>Both approaches seem to be somehow circumstantial as they both create lots of overhead. I would appriciate any ideas or hints on how to improve my algorithm. </p> <p>greetings, Dominik</p>
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    1. USKorexio
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    1. CODo you have any particular reason to use `XPathNavigator` in the first place? It doesn't seem a particularly natural fit. I'd use `XmlWriter` or LINQ to XML.
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      1. USJon Skeet
    2. COBecause I started with XPathNavigator for deserialization and wanted the implementation to use as few classes as possible. Though XmlWriter seems to be great for my purposes...
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