系列化C＃ - 對象集合

Question

我只是在C＃中開始編程，我有問題，系列化

我想要做什麼：

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

我的想法：

[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，在編譯過程中出錯。那麼你能給我一些提示/指導如何解決這個問題嗎？

對不起，沒有錯誤。現在，它看起來像：

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

但是，當我改變了這一行：

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

這樣：

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

然後，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是真正的Product的屬性附加傷害，我會建議這簡化這樣的代碼：

[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(); 
    } 
} 

那麼你應該得到

<?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>