将对象序列化，反序列化到XML

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Serialization;
using Windows.Storage;

namespace List.Model
{
    public class XmlIO
    {
        public static async Task<T> ReadObjectFromXmlFileAsync<T>(string filePath)
        {
            // this reads XML content from a file ("filePath") and returns an object  from the XML
            T objectFromXml = default(T);
            var serializer = new XmlSerializer(typeof(T));
            StorageFile file = await StorageFile.GetFileFromApplicationUriAsync(new Uri(filePath));
            Stream stream = await file.OpenStreamForReadAsync();
            objectFromXml = (T)serializer.Deserialize(stream);
            stream.Dispose();
            return objectFromXml;
        }

        public static async Task SaveObjectToXml<T>(T objectToSave, string fileName)
        {
            // stores an object in XML format in file called 'filename', in App local folder
            var serializer = new XmlSerializer(typeof(T));
            StorageFile file = await ApplicationData.Current.LocalFolder.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
            Stream stream = await file.OpenStreamForWriteAsync();

            using (stream)
            {
                serializer.Serialize(stream, objectToSave);
            }
        }

    }
}