[转：http://blog.csdn.net/woaixiaozhe/article/details/7873582]
1.说明：Dictionary对象本身不支持序列化和反序列化，需要定义一个继承自Dictionary, IXmlSerializable类的自定义类来实现该功能。感觉完全可以把这样的类封装到C#库中，很具有通用性嘛，至今没有遇到不能用的情况的说，或许出于其他方面的考虑microsoft才没有这么做。
2.SerializableDictionary自定义类
[Serializable]
public class SerializableDictionary<TKey, TValue> : Dictionary<TKey, TValue>, IXmlSerializable
{
public SerializableDictionary() { }
public void WriteXml(XmlWriter write) // Serializer
{
XmlSerializer KeySerializer = new XmlSerializer(typeof(TKey));
XmlSerializer ValueSerializer = new XmlSerializer(typeof(TValue)); foreach (KeyValuePair<TKey, TValue> kv in this)
{
write.WriteStartElement("SerializableDictionary");
write.WriteStartElement("key");
KeySerializer.Serialize(write, kv.Key);
write.WriteEndElement();
write.WriteStartElement("value");
ValueSerializer.Serialize(write, kv.Value);
write.WriteEndElement();
write.WriteEndElement();
}
}
public void ReadXml(XmlReader reader) // Deserializer
{
reader.Read();
XmlSerializer KeySerializer = new XmlSerializer(typeof(TKey));
XmlSerializer ValueSerializer = new XmlSerializer(typeof(TValue)); while (reader.NodeType != XmlNodeType.EndElement)
{
reader.ReadStartElement("SerializableDictionary");
reader.ReadStartElement("key");
TKey tk = (TKey)KeySerializer.Deserialize(reader);
reader.ReadEndElement();
reader.ReadStartElement("value");
TValue vl = (TValue)ValueSerializer.Deserialize(reader);
reader.ReadEndElement();
reader.ReadEndElement();
this.Add(tk, vl);
reader.MoveToContent();
}
reader.ReadEndElement(); }
public XmlSchema GetSchema()
{
return null;
}
}
3.使用
a.定义SerializableDictionary对象，这里以存储<string,string>键对为例：
SerializableDictionary<string, string> serializableDictionary = new SerializableDictionary<string, string>();
b.添加元素
serializableDictionary.Add("Key1", “Value1”);
c.序列化
using (FileStream fileStream = new FileStream(fileName, FileMode.Create))
{
XmlSerializer xmlFormatter = new XmlSerializer(typeof(SerializableDictionary<string, string>));
xmlFormatter.Serialize(fileStream, this.serializableDictionary);
}
注：文件名fileName自己定义，如“file.xml”
d.反序列化
using (FileStream fileStream = new FileStream(fileName, FileMode.Open))
{
XmlSerializer xmlFormatter = new XmlSerializer(typeof(SerializableDictionary<string, string>));
this.serializableDictionary = (SerializableDictionary<string,string>)xmlFormatter.Deserialize(fileStream);
}