序列化Dictionary屬性到XML裡

<ComponentSettings>
<ComponentOne>
<SettingOne>SettingOneValue</SettingOne>
<SettingTwo>SettingTwoValue</SettingTwo>
</ComponentOne>
<ComponentTwo>
<AnotherSettingOne>AnotherSettingOneValue</AnotherSettingOne>
<AnotherSettingTwo>AnotherSettingTwoValue</AnotherSettingTwo>
</ComponentTwo>
</ComponentSettings>

 

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

 

 

可以從Dictionary泛型類派生並實現IXmlSerializable

C# code

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}

調用時候的寫法和原來是一樣的，例如：

C# code

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();}
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/// <summary>  
    
    /// 支援XML序列化的泛型 Dictionary  
    
    /// </summary>  
    
    /// <typeparam name="TKey"></typeparam>  
    
    /// <typeparam name="TValue"></typeparam>  
    
    [XmlRoot("SerializableDictionary")]  
    
    public class SerializableDictionary<TKey, TValue>  
    
        : Dictionary<TKey, TValue>, IXmlSerializable  
    
    {  
    
 
    
        #region 建構函式  
    
        public SerializableDictionary()  
    
            : base()  
    
        {  
    
        }  
    
        public SerializableDictionary(IDictionary<TKey, TValue> dictionary)  
    
            : base(dictionary)  
    
        {  
    
        }  
    
  
    
        public SerializableDictionary(IEqualityComparer<TKey> comparer)  
    
            : base(comparer)  
    
        {  
    
        }  
    
  
    
        public SerializableDictionary(int capacity)  
    
            : base(capacity)  
    
        {  
    
        }  
    
        public SerializableDictionary(int capacity, IEqualityComparer<TKey> comparer)  
    
            : base(capacity, comparer)  
    
        {  
    
        }  
    
        protected SerializableDictionary(SerializationInfo info, StreamingContext context)  
    
            : base(info, context)  
    
        {  
    
        }  
    
        #endregion  
    
        #region IXmlSerializable Members  
    
        public System.Xml.Schema.XmlSchema GetSchema()  
    
        {  
    
            return null;  
    
        }  
    
        /// <summary>  
    
        /// 從對象的 XML 表示形式產生該對象  
    
        /// </summary>  
    
        /// <param name="reader"></param>  
    
        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();  
    
        }  
    
  
    
        /**/  
    
        /// <summary>  
    
        /// 將對象轉換為其 XML 表示形式  
    
        /// </summary>  
    
        /// <param name="writer"></param>  
    
        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  
    
    }