串行化自定义集合

1、CategoryList类代码：

 1using System;
 2using System.Collections;
 3using System.Linq;
 4using System.Web;
 5using System.Xml.Serialization;
 6
 7/**//// <summary>
 8/// Summary description for CategoriesList
 9/// </summary>
10public class CategoriesList
11{
12    private ArrayList _categoriesList;
13    /**//// <summary>
14    /// Initializes a new instance of the CategoriesList class.
15    /// </summary>
16    public CategoriesList()
17    {
18        _categoriesList = new ArrayList();
19    }
20    public Category[] Categories
21    {
22        get
23        {
24            Category[] categories = new Category[_categoriesList.Count];
25            _categoriesList.CopyTo(categories);
26            return categories;
27        }
28        set
29        {
30            if (value == null)
31                return;
32            Category[] categories = (Category[])value;
33            _categoriesList.Clear();
34            foreach (Category cate in categories)
35            {
36                _categoriesList.Add(cate);
37            }            
38        } 
39    }
40    public int AddCategory(Category cate)
41    {
42        return _categoriesList.Add(cate);
43 
44    }
45
46}
47

2、执行代码：

 1using System;
 2using System.Collections;
 3using System.Linq;
 4using System.Web;
 5using System.Web.UI;
 6using System.Web.UI.WebControls;
 7using System.Xml;
 8using System.Xml.Serialization;
 9using System.IO;
10
11
12public partial class Default2 : System.Web.UI.Page
13{
14    protected void Page_Load(object sender, EventArgs e)
15    {
16        string xmlFilePath = @"c:\data\Category.xml";
17        Category category1 = new Category();
18        category1.CategoryID = 1;
19        category1.CategoryName = "啤酒";
20        category1.Description = "软饮料，茶，白酒和红酒";
21        Category category2 = new Category();
22        category2.CategoryID = 2;
23        category2.CategoryName = "调料";
24        category2.Description = "酱油，醋，花椒";
25        CategoriesList list = new CategoriesList();
26        list.AddCategory(category1);
27        list.AddCategory(category2);
28        XmlSerializer serializer=new XmlSerializer(typeof(CategoriesList));
29        TextWriter writer = new StreamWriter(xmlFilePath);
30        serializer.Serialize(writer, list);
31        writer.Close();
32        Response.Write("文件写入成功！");
33
34    }
35}
36

3、输出XML文件：

 1<?xml version="1.0" encoding="utf-8"?>
 2<CategoriesList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 3  <Categories>
 4    <Category>
 5      <CategoryID xmlns="http://northwind.com/category">1</CategoryID>
 6      <CategoryName xmlns="http://northwind.com/category">啤酒</CategoryName>
 7      <Description xmlns="http://northwind.com/category">软饮料，茶，白酒和红酒</Description>
 8    </Category>
 9    <Category>
10      <CategoryID xmlns="http://northwind.com/category">2</CategoryID>
11      <CategoryName xmlns="http://northwind.com/category">调料</CategoryName>
12      <Description xmlns="http://northwind.com/category">酱油，醋，花椒</Description>
13    </Category>
14  </Categories>
15</CategoriesList>