Hashtable序列化、Hashtable和XML互换、HashtableSerailizable

话不多说，直接上代码

 

public class HashtableSerailizable : Hashtable, IXmlSerializable
    {
        #region IXmlSerializable Membres

        public System.Xml.Schema.XmlSchema GetSchema()
        {
            return null;
        }

        public void ReadXml(System.Xml.XmlReader reader)
        {
            // Start to use the reader.
            reader.Read();
            // Read the first element ie root of this object
            reader.ReadStartElement("dictionary");

            // Read all elements
            while (reader.NodeType != XmlNodeType.EndElement)
            {
                // parsing the item
                reader.ReadStartElement("item");

                // PArsing the key and value
                string key = reader.ReadElementString("key");
                string value = reader.ReadElementString("value");

                // en reading the item.
                reader.ReadEndElement();
                reader.MoveToContent();

                // add the item
                this.Add(key, value);
            }

            // Extremely important to read the node to its end.
            // next call of the reader methods will crash if not called.
            reader.ReadEndElement();
        }

        public void WriteXml(System.Xml.XmlWriter writer)
        {
            // Write the root elemnt
            writer.WriteStartElement("dictionary");

            // Fore each object in this
            foreach (object key in this.Keys)
            {
                object value = this[key];
                // Write item, key and value
                writer.WriteStartElement("item");
                writer.WriteElementString("key", key.ToString());
                writer.WriteElementString("value", value.ToString());

                // write </item>
                writer.WriteEndElement();
            }
            // write </dictionnary>
            writer.WriteEndElement();
        }
        #endregion

        public void SaveXml(string filename)
        {
            System.IO.StreamWriter W = null;
            try
            {

                W = new System.IO.StreamWriter(filename);
                System.Xml.Serialization.XmlSerializer S = new System.Xml.Serialization.XmlSerializer(this.GetType());
                S.Serialize(W, this);
                W.Close();
            }
            catch//(Exception ex)
            {
                if (W != null)
                    W.Close();
                //System.Windows.Forms.MessageBox.Show(ex.ToString());
            }
        }

        public void ReadXml(string filename)
        {
            try
            {
                XmlDocument doc = new XmlDocument();
                doc.Load(filename);
                if (doc.ChildNodes.Count == 0) return;
                XmlNodeList ItemList = doc.ChildNodes[1].ChildNodes[0].ChildNodes;
                for (int i = 0; i < ItemList.Count; i++)
                {
                    this.Add(ItemList[i].ChildNodes[0].InnerText, ItemList[i].ChildNodes[1].InnerText);
                }
            }
            catch
            {

            }
        }

        public HashtableSerailizable()
        {
        }
        public HashtableSerailizable(string filename)
        {
            ReadXml(filename);
        }
    }