序列化反序列化只讀屬性解決方案（原創）

/// <summary>
    /// 經過反射實現具備只讀屬性的類的序列化
    /// 類必私有變量必須是"_"+屬性名稱
    /// </summary>
    public abstract class ReadOnlySerializable : IXmlSerializable
    {
        #region XmlSerializable
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        public System.Xml.Schema.XmlSchema GetSchema()
        {
            return null;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="reader"></param>
        public void ReadXml(System.Xml.XmlReader reader)
        {
            Type type = this.GetType();
            reader.ReadStartElement(type.Name);
            while (reader.Read())
            {
                if (reader.NodeType != System.Xml.XmlNodeType.EndElement)
                {
                    if (string.IsNullOrEmpty(reader.LocalName) == false)
                    {
                        FieldInfo field = type.GetField("_" + reader.LocalName, BindingFlags.NonPublic | BindingFlags.Instance);


                        if (field != null)
                        {
                            if (field.FieldType == typeof(string) || field.FieldType.BaseType.Equals(typeof(System.ValueType)))
                            {
                                field.SetValue(this, Convert.ChangeType(reader.ReadString(), field.FieldType));
                            }
                            else
                            {
                                reader.ReadStartElement();
                                XmlSerializer xs = new XmlSerializer(field.FieldType);
                                field.SetValue(this, xs.Deserialize(reader));
                                reader.ReadEndElement();
                            }
                        }
                    }
                }
                else if (reader.NodeType == System.Xml.XmlNodeType.EndElement)
                {
                    reader.ReadEndElement();
                    break;
                }
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="writer"></param>
        public void WriteXml(System.Xml.XmlWriter writer)
        {
            foreach (var item in this.GetType().GetProperties())
            {
                object value = item.GetValue(this, null);
                if (value != null)
                {
                    if (item.PropertyType != typeof(string) && item.PropertyType.BaseType.Equals(typeof(System.ValueType)) == false)
                    {
                        writer.WriteStartElement(item.Name);
                        XmlSerializer xs = new XmlSerializer(item.PropertyType);
                        xs.Serialize(writer, value);
                        writer.WriteEndElement();
                    }
                    else
                    {
                        writer.WriteStartElement(item.Name);
                        writer.WriteString(value.ToString());
                        writer.WriteEndElement();
                    }
                }
            }
        }
        #endregion
    }