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POXml Serialization inside a collection
 

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    <p><code>XmlRoot</code> does not seem to work with classes that are contained within a collection. Here are the classes I have defined:</p> <pre><code>[XmlRoot("cars")] public class CarCollection : Collection&lt;Car&gt; { } [XmlRoot("car")] public class Car { [XmlAttribute("make")] public String Make { get; set; } [XmlAttribute("model")] public String Model { get; set; } } </code></pre> <p>Here is the code I am using to serialize these objects:</p> <pre><code> CarCollection cars = new CarCollection(); cars.Add(new Car { Make = "Ford", Model = "Mustang" }); cars.Add(new Car { Make = "Honda", Model = "Accord" }); cars.Add(new Car { Make = "Toyota", Model = "Tundra" }); using (MemoryStream memoryStream = new MemoryStream()) { XmlSerializer carSerializer = new XmlSerializer(typeof(CarCollection)); carSerializer.Serialize(memoryStream, cars); memoryStream.Position = 0; String xml = null; using (StreamReader reader = new StreamReader(memoryStream)) { xml = reader.ReadToEnd(); reader.Close(); } memoryStream.Close(); } </code></pre> <p>The xml after serialization looks like this:</p> <pre><code>&lt;cars xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"&gt; &lt;Car make="Ford" model="Mustang" /&gt; &lt;Car make="Honda" model="Accord" /&gt; &lt;Car make="Toyota" model="Tundra" /&gt; &lt;/cars&gt; </code></pre> <p>Notice the "C" in car is not lowercase. What do I need to change to make this happen? If I serialize the Car directly it comes out as I would expectg.</p> <p>UPDATE: I found another workaround. I am not sure how much I like it but it will work for my case. If I create a custom class (see below) and have CarCollection derive from it the serialization works as I expected.</p> <pre><code> public class XmlSerializableCollection&lt;T&gt; : Collection&lt;T&gt;, IXmlSerializable { public XmlSchema GetSchema() { return null; } public void ReadXml(XmlReader reader) { bool wasEmpty = reader.IsEmptyElement; reader.Read(); if (wasEmpty) { return; } XmlSerializer serializer = new XmlSerializer(typeof(T)); while (reader.NodeType != XmlNodeType.EndElement) { T t = (T)serializer.Deserialize(reader); this.Add(t); } if (reader.NodeType == XmlNodeType.EndElement) { reader.ReadEndElement(); } } public void WriteXml(XmlWriter writer) { XmlSerializer reqSerializer = new XmlSerializer(typeof(T)); foreach (T t in this.Items) { reqSerializer.Serialize(writer, t); } } } </code></pre>
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    1. USShaun Bowe
    1. USShaun Bowe
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    1. CODo you know why the workaround of inserting a custom XmlSerializableCollection<T> class causes the xml you want to be generated during serialization?
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      1. USjameswelle
    2. COIt works because I am serializing the child objects manually and it then respects the XMLRoot attribute on the child.
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      1. USShaun Bowe
 

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