C#自定义可序列化的Dictionary类型

自定义可序列化的Dictionary类型。

转自外国网站的，做下标记。哈哈。。。。

引自：http://weblogs.asp.net/pwelter34/archive/2006/05/03/444961.aspx

XML Serializable Generic Dictionary

XML Serializable Generic Dictionary

For some reason, the generic Dictionary in .net 2.0 is not XML serializable. The following code snippet is a xml serializable generic dictionary. The dictionary is serialzable by implementing the IXmlSerializable interface.

using System;

using System.Collections.Generic;

using System.Text;

using System.Xml.Serialization;

[XmlRoot("dictionary")]

public class SerializableDictionary<TKey, TValue>

: Dictionary<TKey, TValue>, IXmlSerializable

{

#region IXmlSerializable Members

public System.Xml.Schema.XmlSchema GetSchema()

{

return null;

}

public void ReadXml(System.Xml.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 != System.Xml.XmlNodeType.EndElement)

{

reader.ReadStartElement("item");

reader.ReadStartElement("key");

TKey key = (TKey)keySerializer.Deserialize(reader);

reader.ReadEndElement();

reader.ReadStartElement("value");

TValue value = (TValue)valueSerializer.Deserialize(reader);

reader.ReadEndElement();

this.Add(key, value);

reader.ReadEndElement();

reader.MoveToContent();

}

reader.ReadEndElement();

}

public void WriteXml(System.Xml.XmlWriter writer)

{

XmlSerializer keySerializer = new XmlSerializer(typeof(TKey));

XmlSerializer valueSerializer = new XmlSerializer(typeof(TValue));

foreach (TKey key in this.Keys)

{

writer.WriteStartElement("item");

writer.WriteStartElement("key");

keySerializer.Serialize(writer, key);

writer.WriteEndElement();

writer.WriteStartElement("value");

TValue value = this[key];

valueSerializer.Serialize(writer, value);

writer.WriteEndElement();

writer.WriteEndElement();

}

}

#endregion

}