C# xml读写

 1 class XmlClass
 2     {
 3         public string Pathname; //总列表
 4         public XmlClass()
 5         {
 6             string str = System.AppDomain.CurrentDomain.BaseDirectory;
 7             string path = str;
 8
 9             for (int i = 0; i < 3; i++)
10             {
11                 string rootpath = path.Substring(0, path.LastIndexOf("\\"));
12                 path = rootpath;
13             }
14             Pathname = path + "\\Document\\myxml.xml";
15         }
16
17         public string[] XmlStore()
18         {
19             string []elements = new string[2];
20             XmlReader reader = XmlReader.Create(Pathname);
21
22             while (reader.Read())
23             {
24                 if (reader.NodeType == XmlNodeType.Element)  //如果是开始节点
25                 {
26                     switch (reader.Name)
27                     {
28                         case "Meet":
29                             {
30                                 if (reader.Value == "")
31                                     elements[0] = (string)reader.ReadElementContentAs(typeof(string), null);                                                                    //适用父节点包含单个子元素，否则其余子元素无法获取
32                                 else
33                                     elements[0] = reader.ReadContentAsString();
34                             }break;
35
36                         case "Topic":
37                             {
38                                 if (reader.Value == "")
39                                     elements[1] = (string)reader.ReadElementContentAs(typeof(string), null);
40                                 else
41                                     elements[1] = reader.ReadContentAsString();
42                             }break;
43                         default:
44                             break;
45                     }
46                 }
47             }
48             reader.Close();
49             reader.Dispose();
50             return elements;
51         }
52
53         public void XmlDisplay(string metting, string topic)
54         {
55             using (FileStream fs = new FileStream(Pathname, FileMode.Create, FileAccess.Write))
56             {
57                 XmlWriter writer = XmlWriter.Create(fs);
58                 writer.WriteStartElement("Root");
59
60                 writer.WriteStartElement("Root1");
61                 writer.WriteElementString("Meet", metting);
62                 writer.WriteEndElement();
63
64                 writer.WriteStartElement("Root2");
65                 writer.WriteElementString("Topic", topic);
66                 writer.WriteEndElement();
67                 writer.WriteEndElement();
68                 writer.Close();
69                 writer.Dispose();
70             }
71         }
72     }