怎样在Metro里做序列化和反序列化？

Question

我想在启动时加载一些本地信息，退出时再序列化到本地，以便下次启动加载。

Answer 1

你可以在Launch时，进行反序列化。在Suspend和Terminate时，进行序列化。

你可以自定义数据类型，用DataContract和DataMember属性声明要序列化的类和数据成员，然后调用DataContractSerializer Class 进行实际的序列化和反序列化。

样例代码如下

using System.Runtime.Serialization;

// declare custom serializable type

[DataContract(Name = "MyData", Namespace = "http://www.mysite.com")]
class MyData
{
	[DataMember()]
	public string FirstName;
	[DataMember]
	public string LastName;
	[DataMember()]
	public int ID;

	public MyData(string fname, string lname, int newID)
	{
		FirstName = fname;
		LastName = lname;
		ID = newID;
	}
}

// serialize sample code

MyData myData = new MyData("a", "b", 1);             
StorageFile file = await ApplicationData.Current.LocalFolder.CreateFileAsync("mydata,xml", CreationCollisionOption.ReplaceExisting);	
IRandomAccessStream stream = await file.OpenAsync(FileAccessMode.ReadWrite);
using (IOutputStream outStream = stream.GetOutputStreamAt(0))
{                                              
	DataContractSerializer serializer = new DataContractSerializer(typeof(MyData));
	serializer.WriteObject(outStream.AsStreamForWrite(), myData);
	await outStream.FlushAsync();
}
			

---

Best wishes,

---

Robin [MSFT]
MSDN Community Support | Feedback to us
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Answer 2

          下面是c#例子 你可以参考看看!

       StorageFile file = await ApplicationData.Current.LocalFolder.CreateFileAsync(filename, CreationCollisionOption.ReplaceExisting);
            IRandomAccessStream raStream = await file.OpenAsync(FileAccessMode.ReadWrite);
            using (IOutputStream outStream = raStream.GetOutputStreamAt(0))
            {
                XmlSerializerHelper.Serialize(outStream.AsStreamForWrite(), _dictionaries);
            }

     

          StorageFile file = await ApplicationData.Current.LocalFolder.GetFileAsync(filename);
                if (file == null) return;
                IInputStream inStream = await file.OpenSequentialReadAsync();
                _dictionaries = (DictCache)XmlSerializerHelper.Deserialize(inStream.AsStreamForRead(), typeof(DictCache));