interface IXmlSerializable
		{
			XmlSchema GetSchema();
			void ReadXml(XmlReader reader);
			void WriteXml(XmlWriter writer);
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			Hashtable[] ht_a = new Hashtable[ 1 ]; 
			Hashtable ht = new Hashtable();
			XmlWriter xw;
			xw =null;

			ht.Add( 1 , "Aaron");
			ht.Add( 2 , "Monica");
			ht.Add( 3 , "Michelle");
			ht_a[ 0 ] = ht;
		}
		public static void Serialize(IDictionary[] dictionary, XmlWriter writer)
		{
			DictionarySerializer serlzDict = new DictionarySerializer(dictionary);
			XmlSerializer xs = new XmlSerializer(typeof(DictionarySerializer));
			xs.Serialize(writer, serlzDict);
		}
	}
	public class DictionarySerializer : IXmlSerializable
	{
		private const string strNameSpace = @"http://www.tetco.fr/xml/serialization";
		public IDictionary[] dictionary;

		public DictionarySerializer(IDictionary[] dictionary)
		{
			this.dictionary = dictionary;
		}
			
		public void WriteXml(XmlWriter w)
		{
			Type m_t;
			w.WriteStartElement("dictionaries", strNameSpace);

			for(int i= 0 ;i<this.dictionary.Length;i++)
			{
				w.WriteStartElement("dictionary", strNameSpace);
				w.WriteStartAttribute("did",i.ToString());

				foreach (object key in dictionary[i].Keys)
				{
					object val = dictionary[i][key];
					w.WriteStartElement("item", strNameSpace);
					w.WriteElementString("key", strNameSpace, key.ToString());
					m_t = key.GetType();
					w.WriteStartAttribute("type",m_t.ToString(),strNameSpace);
					w.WriteElementString("value", strNameSpace, val.ToString());
					m_t = val.GetType();
					w.WriteStartAttribute("type",m_t.ToString(),strNameSpace);
					w.WriteEndElement();
				}
				w.WriteEndElement();
			}
			w.WriteEndElement();
		}

		public void ReadXml(XmlReader r)
		{
			r.Read(); // move past container
			r.ReadStartElement("dictionaries");
			while (r.NodeType != XmlNodeType.EndElement)
			{            
				r.ReadStartElement("item", strNameSpace);
				string key = r.ReadElementString("key", strNameSpace);
				string value = r.ReadElementString("value", strNameSpace);
				r.ReadEndElement();
				r.MoveToContent();
				dictionary[ 0 ].Add(key, value);
			}
		}
		public System.Xml.Schema.XmlSchema GetSchema()
		{
			return  null;
		}
}