如何序列化/反序列化简单的类和XML之间 [英] How to serialize/deserialize simple classes to XML and back

问题描述

有时候我想模仿我的课的存储数据，而无需建立一个往返到数据库。例如，假设我有以下类：

Sometimes I want to emulate stored data of my classes without setting up a round trip to the database. For example, let's say I have the following classes:

public class ShoppingCart
{
    public List<CartItem> Items {get; set;}
    public int UserID { get; set; }
}

public class CartItem
{
    public int SkuID { get; set; }
    public int Quantity  { get; set; }
    public double ExtendedCost  { get; set; }
}

比方说，我建立内存中的的购物对象，并希望拯救它作为一个XML文档。通过某种 XDocument.CreateFromPOCO（购物车）法这可能吗？如何在另一个方向：是有一个内置的方式来创建像新的购物车（XDOC）的XML文档的购物对象？

Let's say I build a ShoppingCart object in memory and want to "save" it as an XML document. Is this possible via some kind of XDocument.CreateFromPOCO(shoppingCart) method? How about in the other direction: is there a built-in way to create a ShoppingCart object from an XML document like new ShoppingCart(xDoc)?

推荐答案

的 XmlSerializer的是做到这一点的方法之一。 <一href="http://msdn.microsoft.com/en-us/library/system.runtime.serialization.datacontractserializer.aspx"相对=nofollow> DataContractSerializer的是另一回事。例如用的XmlSerializer ：

XmlSerializer is one way to do it. DataContractSerializer is another. Example with XmlSerializer:

using System.Xml;
using System.Xml.Serialization;

//...

ShoppingCart shoppingCart = FetchShoppingCartFromSomewhere();
var serializer = new XmlSerializer(shoppingCart.GetType());
using (var writer = XmlWriter.Create("shoppingcart.xml"))
{
    serializer.Serialize(writer, shoppingCart);
}

和反序列化回：

var serializer = new XmlSerializer(typeof(ShoppingCart));
using (var reader = XmlReader.Create("shoppingcart.xml"))
{
    var shoppingCart = (ShoppingCart)serializer.Deserialize(reader);
}

也为更好的封装我会用你的 CartItem 类字段属性，而不是推荐你。

Also for better encapsulation I would recommend you using properties instead of fields in your CartItem class.

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