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2008-09-17T13:41:47.510
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2008-09-17T13:41:47.510
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<p>I don't think there is as <code>Dictionary<></code> itself isn't XML serializable, when I had need to send a dictionary object via a web service I ended up wrapping the <code>Dictionary<></code> object myself and adding support for <code>IXMLSerializable</code>.</p> <pre><code>/// <summary> /// Represents an XML serializable collection of keys and values. /// </summary> /// <typeparam name="TKey">The type of the keys in the dictionary.</typeparam> /// <typeparam name="TValue">The type of the values in the dictionary.</typeparam> [XmlRoot("dictionary")] public class SerializableDictionary<TKey, TValue> : Dictionary<TKey, TValue>, IXmlSerializable { #region Constants /// <summary> /// The default XML tag name for an item. /// </summary> private const string DEFAULT_ITEM_TAG = "Item"; /// <summary> /// The default XML tag name for a key. /// </summary> private const string DEFAULT_KEY_TAG = "Key"; /// <summary> /// The default XML tag name for a value. /// </summary> private const string DEFAULT_VALUE_TAG = "Value"; #endregion #region Protected Properties /// <summary> /// Gets the XML tag name for an item. /// </summary> protected virtual string ItemTagName { get { return DEFAULT_ITEM_TAG; } } /// <summary> /// Gets the XML tag name for a key. /// </summary> protected virtual string KeyTagName { get { return DEFAULT_KEY_TAG; } } /// <summary> /// Gets the XML tag name for a value. /// </summary> protected virtual string ValueTagName { get { return DEFAULT_VALUE_TAG; } } #endregion #region Public Methods /// <summary> /// Gets the XML schema for the XML serialization. /// </summary> /// <returns>An XML schema for the serialized object.</returns> public XmlSchema GetSchema() { return null; } /// <summary> /// Deserializes the object from XML. /// </summary> /// <param name="reader">The XML representation of the object.</param> public void ReadXml(XmlReader reader) { XmlSerializer keySerializer = new XmlSerializer(typeof(TKey)); XmlSerializer valueSerializer = new XmlSerializer(typeof(TValue)); bool wasEmpty = reader.IsEmptyElement; reader.Read(); if (wasEmpty) { return; } while (reader.NodeType != XmlNodeType.EndElement) { reader.ReadStartElement(ItemTagName); reader.ReadStartElement(KeyTagName); TKey key = (TKey)keySerializer.Deserialize(reader); reader.ReadEndElement(); reader.ReadStartElement(ValueTagName); TValue value = (TValue)valueSerializer.Deserialize(reader); reader.ReadEndElement(); this.Add(key, value); reader.ReadEndElement(); reader.MoveToContent(); } reader.ReadEndElement(); } /// <summary> /// Serializes this instance to XML. /// </summary> /// <param name="writer">The writer to serialize to.</param> public void WriteXml(XmlWriter writer) { XmlSerializer keySerializer = new XmlSerializer(typeof(TKey)); XmlSerializer valueSerializer = new XmlSerializer(typeof(TValue)); foreach (TKey key in this.Keys) { writer.WriteStartElement(ItemTagName); writer.WriteStartElement(KeyTagName); keySerializer.Serialize(writer, key); writer.WriteEndElement(); writer.WriteStartElement(ValueTagName); TValue value = this[key]; valueSerializer.Serialize(writer, value); writer.WriteEndElement(); writer.WriteEndElement(); } } #endregion } </code></pre>
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1. POIs there a serializable generic Key/Value pair class in .NET?
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1. COOP doesn't mention Dictionary at all. The question is about serializing a key/value pair. Your answer is related, but I think it detracts from the fundamental issue.
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