简单的xml序列化和反序列化

using System.Xml.Serialization;
using System.IO;
using System.Xml;
using System.Text;
namespace TestProject1.XML
{
    public class XmlRepository<TRoot>
    {
        string _FilePath;
        public XmlRepository(string filePath)
        {
            this._FilePath = filePath;
        }

        XmlSerializer _Serializer;
        XmlSerializer Serializer
        {
            get
            {
                if (_Serializer != null)
                    return _Serializer;
                _Serializer = new XmlSerializer(typeof(TRoot));
                return _Serializer;
            }
        }

        TRoot _Root;
        public TRoot Root
        {
            get
            {
                if (_Root != null)
                    return _Root;
                using (var sm = File.Open(_FilePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
                {
                    _Root = (TRoot)Serializer.Deserialize(sm);
                }
                return _Root;
            }
        }

        public void Save()
        {
            using (var sm = File.Open(_FilePath, FileMode.Truncate))
            {
                //这样写就可有<?xml version="1.0" encoding="utf-8"?>
                XmlTextWriter write = new XmlTextWriter(sm, Encoding.UTF8);
                //设置格式缩进
                write.Formatting = Formatting.Indented;
                Serializer.Serialize(write, Root);
            }
        }
    }
}