序列化C＃-對象集合

Question

我剛開始用C＃編程，但是序列化有問題

我想做的事：

<Products>
  <ID>1</ID>
  <Product>
    <name>Samochod</name>
    <price>20</price>
    <mass>1000</mass>
  </Products>
<Products>

我的點子：

  [XmlRoot("Product")]
    public class Product
    {

        [XmlElement("name")]
        public string name { get; set; }
        [XmlElement("price")]
        public decimal price { get; set; }
        [XmlElement("mass")]
        public double mass { get; set; }



        public static void serialization()
        {
            id iD = new id();
            List <id> idlist = new List<id>();
            List<Product> listprod = new List<Product>();
            idlist.Add(new id() {ID = 1});
            listprod.Add(new Product() { name = "Samochod", price = 20, mass = 1000 });

            XmlRootAttribute root = new XmlRootAttribute("Products");
            TextWriter textwriter = new StreamWriter(@"C:\Products.xml");
            XmlSerializer xmlserializer = new XmlSerializer(typeof(List<Product>),root);
            xmlserializer.Serialize(textwriter, listprod);
            textwriter.Close();


        }


    }

    [XmlRoot("ID")]
    public class id:Product
    {
        [XmlElement("ID")]
        public int ID { get; set; }
    }

不幸的是，編譯期間出錯。 那么，您能給我一些解決方法嗎？

抱歉，沒有錯誤。 現在看起來像：

<Products> 
      <Product>
        <ID>0</ID>
        <name>Samochod</name>
        <price>20</price>
        <mass>1000</mass>
      </Products>
 <Products>

但是，當我更改此行時：

idlist.Add(new id() {ID = 1});

對此：

listprod.Add(new id() {ID = 1});

然后我有一個錯誤：

There was an error generating the XML document.

Answer 1

您的idlist最終未被使用。 由於ID確實是Product一個屬性，我建議這樣做以簡化如下代碼：

[XmlRoot("Product")]
public class Product
{
    [XmlElement("ID")]
    public int ID { get; set; }

    [XmlElement("name")]
    public string name { get; set; }
    [XmlElement("price")]
    public decimal price { get; set; }
    [XmlElement("mass")]
    public double mass { get; set; }



    public static void serialization()
    {
        List<Product> listprod = new List<Product>();
        listprod.Add(new Product() { ID = 1, name = "Samochod", price = 20, mass = 1000 });

        XmlRootAttribute root = new XmlRootAttribute("Products");
        TextWriter textwriter = new StreamWriter(@"C:\temp\Products.xml");
        XmlSerializer xmlserializer = new XmlSerializer(typeof(List<Product>), root);
        xmlserializer.Serialize(textwriter, listprod);
        textwriter.Close();
    }
}

然后你應該得到

<?xml version="1.0" encoding="utf-8"?>
<Products xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <Product>
    <ID>1</ID>
    <name>Samochod</name>
    <price>20</price>
    <mass>1000</mass>
  </Product>
</Products>