asp.net读取Xml文件中的数据

1.新建一个Xml文件，如下，在里面存放数据

 <?xml version="1.0" encoding="utf-8" ?>
2 <Entry xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3        xmlns:xsd="http://www.w3.org/2001/XMLSchema">
4   <Title>Hello！</Title>
5   <Details>These are the details of the Weblog entry</Details>
6 </Entry>

2. 新建一个Entry类，与Xml文件交互，代码如下

 1 using System;
 2 using System.IO;
 3 using System.Xml.Serialization;
 4 
 5 namespace _1asp
 6 {
 7     public class Entry
 8     {
 9         private DateTime _timestamp;
10         private String _title;
11         private String _details;
12 
13 
14         [XmlIgnore()]
15         public DateTime Timestamp
16         {
17             get
18             {
19                 return _timestamp;
20             }
21             set
22             {
23                 _timestamp = value;
24             }
25         }
26 
27         public String Title
28         {
29             get
30             {
31                 return _title;
32             }
33             set
34             {
35                 _title = value;
36             }
37         }
38 
39         public String Details
40         {
41             get
42             {
43                 return _details;
44             }
45             set
46             {
47                 _details = value;
48             }
49         }
50     }
51 }

3.添加一个GLobal.asax

用来存放全局变量（本例子中为xml所在的文件目录），同时添加一个静态方法LoadEntry,代码如下（加标注的地方为手动添加，其余大部分为自动生成）

 1 using System;
 2 using System.Collections;
 3 using System.Configuration;
 4 using System.Web;
 5 using System.Web.SessionState;
 6 using System.IO;
 7 using System.Xml.Serialization;
 8 
 9 namespace _1asp
10 {
11     public class Global : System.Web.HttpApplication
12     {
13         //成员
14         public static String EntryFilePath;
15 
16         protected void Application_Start(object sender, EventArgs e)
17         {
18             EntryFilePath = Server.MapPath("Entries");
19         }
20 
21         protected void Session_Start(object sender, EventArgs e)
22         {
23 
24         }
25 
26         protected void Application_BeginRequest(object sender, EventArgs e)
27         {
28 
29         }
30 
31         protected void Application_AuthenticateRequest(object sender, EventArgs e)
32         {
33 
34         }
35 
36         protected void Application_Error(object sender, EventArgs e)
37         {
38 
39         }
40 
41         protected void Session_End(object sender, EventArgs e)
42         {
43 
44         }
45 
46         protected void Application_End(object sender, EventArgs e)
47         {
48 
49         }
50 
51         /*加载XML数据文件，并把内容放在定义的Entry类中
52          * 使用了System.Xml.Serialization名称空间中的一个类XmlSerializer，调用它的方法Deserialize()
53          * 并把它的数据转换为一组对象属性，它们存储在Entry类的实例中
54          */
55         public static Entry LoadEntry(String filename)
56         {
57             String filepath = EntryFilePath + "\\" + filename;
58             FileStream file = new FileStream(filepath, FileMode.Open);
59 
60             XmlSerializer serializer = new XmlSerializer(typeof(Entry));
61             Entry newEntry = (Entry)serializer.Deserialize(file);
62 
63             file.Close();
64             //显示时间
65             newEntry.Timestamp = new FileInfo(filepath).LastWriteTime;
66             return newEntry; 
67         }
68     }
69 }

4.在Default.aspx文件设计图上添加2个label控件，在源码中，Page_Load事件中添加如下代码，可以观看读取的xml数据值

  labelServerPath.Text = Server.MapPath("");
2 //load the entry from disk
3             Entry entry = Global.LoadEntry("Entry.xml");
4             labelEntryTitle.Text = entry.Title;
5 //labelEntryDetails.Text = entry.Details;
6             labelEntryDetails.Text = entry.Timestamp.ToString("dddd") + "," + entry.Timestamp.ToLongDateString() + "-" + entry.Details;