如何序列化Dictionary属性到XML里

[wonderland_waterfall]

我有一个类，这个类需要序列化到一个XML文件里面。

类包含一个Dictionary<string,Dictionary<string,string>>的属性。

但是Dictionary类的属性是没有办法直接序列化成为XML的，所以用到下面的这个类来做到这一点：

[Serializable]
class ComponentsProperties : System.Xml.Serialization.IXmlSerializable
{
Dictionary<string, Dictionary<string, string>> ComponentProps { get; set; }

#region IXmlSerializable Members
public System.Xml.Schema.XmlSchema GetSchema()
{
throw new NotImplementedException();
}

public void ReadXml(System.Xml.XmlReader reader)
{
// TODO implement read xml
}

public void WriteXml(System.Xml.XmlWriter writer)
{
// TODO implement write xml
}
#endregion
}

现在把要序列化的class里面的Dictionary<...>属性换成上面的ComponentsProperties属性，从而让它可以被序列化：

public Dictionary<string, Dictionary<string,string>> Settings { get; set; }

替换成了

public ComponentsProperties ComponentSettings { get; set; }

但是访问属性的时候，原来的Settings[key]=value应该变成怎样？

最重要的是，上面的那个类需要实现的那几个method都是做什么的，应该怎样实现啊？

非常感谢。

P.S. 序列化以后的文件可以包含这个：

Dictionary<string, Dictionary<string,string>>
ComponentOne,
SettingOne, SettingOneValue
SettingTwo,SettingTwoValue
ComponentTwo,
AnotherSettingOne, AnotherSettingOneValue,
AnotherSettingTwo, AnotherSettingTwoValue
--------------------------------------
<ComponentSettings>
<ComponentOne>
<SettingOne>SettingOneValue</SettingOne>
<SettingTwo>SettingTwoValue</SettingTwo>
</ComponentOne>
<ComponentTwo>
<AnotherSettingOne>AnotherSettingOneValue</AnotherSettingOne>
<AnotherSettingTwo>AnotherSettingTwoValue</AnotherSettingTwo>
</ComponentTwo>
</ComponentSettings>

[wuyq11]

Dictionary本身支持Serialization。key，value都是Serializable
不能直接xml序列化， 转化成list再序列化

[jshi123]

可以从Dictionary泛型类派生并实现IXmlSerializable

public class ComponentsProperties : Dictionary<string, Dictionary<string,string>>, System.Xml.Serialization.IXmlSerializable
{
    #region IXmlSerializable Members
    public System.Xml.Schema.XmlSchema GetSchema()
    {
        throw new NotImplementedException();
    }

    public void ReadXml(System.Xml.XmlReader reader)
    {
        if (reader.IsEmptyElement)
            return;

        reader.Read();
        while (reader.NodeType != System.Xml.XmlNodeType.EndElement)
        {
            string key = reader.Name;
            this[key] = new Dictionary<string, string>();
            if (!reader.IsEmptyElement)
            {
                reader.ReadStartElement();
                while (reader.NodeType != System.Xml.XmlNodeType.EndElement)
                    this[key][reader.Name] = reader.ReadElementString();
            }
            reader.Read();
        }
    }

    public void WriteXml(System.Xml.XmlWriter writer)
    {
        foreach (string key in this.Keys)
        {
            writer.WriteStartElement(key);
            foreach (string key1 in this[key].Keys)
                writer.WriteElementString(key1, this[key][key1]);
            writer.WriteEndElement();
        }
    }
    #endregion
}

调用时候的写法和原来是一样的，例如：

public class TestClass
{
	[XmlElement("ComponentSettins")]
	public ComponentsProperties Settings { get; set; }
}

void DoTest()
{
	TestClass test = new TestClass();
	test.Settings = new ComponentsProperties();
	test.Settings["ComponentOne"] = new Dictionary<string, string>();
	test.Settings["ComponentOne"]["SettingOne"] = "SettingOneValue";
	test.Settings["ComponentOne"]["SettingTwo"] = "SettingTwoValue";
	test.Settings["ComponentTwo"] = new Dictionary<string, string>();
	test.Settings["ComponentTwo"]["AnotherSettingOne"] = "AnotherSettingOneValue";
	test.Settings["ComponentTwo"]["AnotherSettingTwo"] = "AnotherSettingTwoValue";

	XmlSerializer xs = new XmlSerializer(typeof(TestClass));
	FileStream fs = new FileStream(@"d:\test.xml", FileMode.Create);
	xs.Serialize(fs, test);
	fs.Close();
}

[alan001]

up................

[vip__888]

遍历不行 么？