XML库存系统

Question

我正在尝试测试我正在开发的库存系统，但我想使用XML来实现它。输入代码之类的：

    <Item>
  <ItemName ItemName = "Apple">
    <ItemQuantity>1</ItemQuantity>
    <ItemMaxQuantity>64</ItemMaxQuantity>
    <ItemState>PERFECT</ItemState>
  </ItemName>

  <ItemName ItemName = "Sword">
    <ItemQuantity>1</ItemQuantity>
    <ItemMaxQuantity>1</ItemMaxQuantity>
    <ItemState>BROKEN</ItemState>
  </ItemName>
</Item>

我知道如何序列化之类的。但不知道如何进一步将它们放入游戏中，像我已经展示的那样拥有多个物品。我有一个库存类。这是这样的：

namespace inventory_test
{
    class Inventory
    {
        public enum ItemState
        {
            NONE,
            PERFECT,
            FINE,
            BROKEN,
            DESTROYED
        };

        /*public enum ItemType
        {
            FOOD,
            USEABLE,
            WEAPON,
            KEY,
            TOOL
        }; Implement this in the test later*/

        [XmlElement("ItemName")]
        public string ItemName
        { get; set; }

        [XmlElement("ItemState")]
        public string ItemState
        { get; set; }

        [XmlElement("ItemQuantity")]
        public string Quantity
        { get; set; }

        [XmlElement("ItemMaxQuantity")]
        public string MaxQuantity
        { get; set; }

        static void AddItem(int itemID, string itemState, int quantity, int maxquantity)
        {

        }


    }
}

这是我的program.cs：

    namespace inventory_test
{
    class Program
    {
        static void Main(string[] args)
        {
        }
//Serialization
        static public void Serialize(Inventory inventory)
        {
            XmlSerializer serializer = new XmlSerializer(typeof(Inventory));
            using (TextWriter writer = new StreamWriter(@"C:\Xml.xml"))
            {
                serializer.Serialize(writer, inventory);
            }
        }
    }
}

我不知道我现在要做什么。我现在真的被困住了，不知道该怎么办。帮帮我:)？

Answer 1

此示例代码向您展示了如何将库存列表序列化为xml文件，以及如何读取该文件并生成相同的库存列表。

var serializer = new XmlSerializer(typeof(List<Inventory>));
var inventories = new List<Inventory>();
inventories.Add(new Inventory
{
    ItemName = "Apple",
    Quantity = "1",
    MaxQuantity = "64",
    ItemState = "PERFECT"
});
inventories.Add(new Inventory
{
    ItemName = "Sword",
    Quantity = "1",
    MaxQuantity = "1",
    ItemState = "BROKEN"
});
//write to xml file
using (var writer = new StreamWriter("inventory.xml"))
{
    serializer.Serialize(writer, inventories);
}
//read from xml file and generate List<Inventory>
using (var reader = new StreamReader("inventory.xml"))
{
    //variable 'result' will contain the same value as 'inventories'
    var result = (List<Inventory>)serializer.Deserialize(reader);
}

Answer 2

正如您在我之前的回答中所说的，这意味着您不想使用序列化/反序列化方法，而是使用“手动”方法。您可以使用XDocument和linq-to-xml query“手动”写入和读取xml文件。示例如下：

//writing to xml file
var doc = new XDocument(new XDeclaration("1.0", "utf-8", "no"));
var root = new XElement("Item");
doc.Add(root);
foreach (var inventory in inventories)
{
    var itemNode = new XElement("ItemName");
    var itemAttribute = new XAttribute("ItemName", inventory.ItemName);
    itemNode.Add(itemAttribute);
    var itemQty = new XElement("ItemQuantity", inventory.Quantity);
    itemNode.Add(itemQty);
    var itemMaxQty = new XElement("ItemMaxQuantity", inventory.MaxQuantity);
    itemNode.Add(itemMaxQty);
    var itemState = new XElement("ItemState", inventory.ItemState);
    itemNode.Add(itemState);
    root.Add(itemNode);
}
doc.Save("Inventory.xml");

//reading from xml file created by above codes to create List<Inventory> object
var docFromFile = XDocument.Load("Inventory.xml");
var inventoriesFromFile = (from inventory in docFromFile.Descendants("ItemName")
                       select new Inventory
                                  {
                                      ItemName = inventory.Attribute("ItemName").Value,
                                      Quantity = inventory.Element("ItemQuantity").Value,
                                      MaxQuantity = inventory.Element("ItemMaxQuantity").Value,
                                      ItemState = inventory.Element("ItemState").Value
                                  }).ToList();

//in the end you'll get variable inventories and inventoriesFromFile have same value

请注意，上面代码中的inventories变量与我前面的答案(定义和内容/值)相同。同样在问题中，您只展示了一些关于XmlSerializer的知识/努力，而不是XDocument方面的知识，所以请仔细阅读代码。如果你希望我解释这个答案中的每一行代码，那就太麻烦了。祝好运