ASP.net(C#)]XML操作类(修改)

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原作者: [db:作者] 来自: [db:来源] 收藏邀请

类如下:

  1  public class XmlUtility
  2     {
  3         protected string strXmlFile;
  4         protected XmlDocument objXmlDoc = new XmlDocument();
  5
  6         public XmlUtility(string XmlFile)
  7         {
  8             try
  9             {
10                 if (!File.Exists(XmlFile))
11                 {
12                     CreatXmlFile(XmlFile);
13                 }
14                 objXmlDoc.Load(XmlFile);
15
16             }
17             catch (System.Exception ex)
18             {
19                 throw ex;
20             }
21             strXmlFile = XmlFile;
22         }
23         protected void CreatXmlFile(string file)
24         {
25             XmlTextWriter writer = new
26             XmlTextWriter(file, Encoding.UTF8);
27
28             // start writing!
29             writer.WriteStartDocument();
30             writer.WriteStartElement("Root");
31             writer.WriteEndElement();
32             writer.WriteEndDocument();
33             writer.Close();
34         }
35         /// <summary>
36         /// 查找数据。返回一个DataSet 多条
37         /// </summary>
38         /// <param name="XmlPathNode">结点路径</param>
39         /// <returns></returns>
40         public DataSet GetData(string XmlPathNode)
41         {
42             //查找数据。返回一个DataSet
43             DataSet ds = new DataSet();
44             //=========多个=================
45             foreach(XmlNode xmlnode in objXmlDoc.SelectNodes(XmlPathNode))
46             {
47                 StringReader read = new StringReader(xmlnode.OuterXml);
48                 ds.ReadXml(read);
49             }
50             //==============================
51             return ds;
52         }
53         /// <summary>
54         /// 查找数据。返回一个DataSet 单条
55         /// </summary>
56         /// <param name="XmlPathNode"></param>
57         /// <returns></returns>
58         public DataSet GetDataSingle(string XmlPathNode)
59         {
60             //查找数据。返回一个DataSet
61             DataSet ds = new DataSet();
62             //==========单个================
63             StringReader read = new StringReader(objXmlDoc.SelectSingleNode(XmlPathNode).OuterXml);
64             ds.ReadXml(read);
65             //==============================
66             return ds;
67         }
68         /// <summary>
69         /// 更新节点内容
70         /// </summary>
71         /// <param name="XmlPathNode"></param>
72         /// <param name="Content"></param>
73         public void Replace(string XmlPathNode, string Content)
74         {
75             //更新节点内容。
76             objXmlDoc.SelectSingleNode(XmlPathNode).InnerText = Content;
77         }
78         /// <summary>
79         /// 删除一个节点
80         /// </summary>
81         /// <param name="Node"></param>
82         public void Delete(string Node)
83         {
84             //删除一个节点。
85             string mainNode = Node.Substring(0, Node.LastIndexOf("/"));
86             objXmlDoc.SelectSingleNode(mainNode).RemoveChild(objXmlDoc.SelectSingleNode(Node));
87         }
88         /// <summary>
89         /// 插入一个节点和此节点的一子节点
90         /// </summary>
91         /// <param name="MainNode"></param>
92         /// <param name="ChildNode"></param>
93         /// <param name="Element"></param>
94         /// <param name="Content"></param>
95         public void InsertNode(string MainNode, string ChildNode, string Element, string Content)
96         {
97             //插入一个节点和此节点的一子节点。
98             XmlNode objRootNode = objXmlDoc.SelectSingleNode(MainNode);
99             XmlElement objChildNode = objXmlDoc.CreateElement(ChildNode);
100             objRootNode.AppendChild(objChildNode);
101             XmlElement objElement = objXmlDoc.CreateElement(Element);
102             objElement.InnerText = Content;
103             objChildNode.AppendChild(objElement);
104         }
105         /// <summary>
106         /// 插入一个节点,带一属性
107         /// </summary>
108         /// <param name="MainNode"></param>
109         /// <param name="Element"></param>
110         /// <param name="Attrib"></param>
111         /// <param name="AttribContent"></param>
112         /// <param name="Content"></param>
113         public void InsertElement(string MainNode, string Element, string Attrib, string AttribContent, string Content)
114         {
115             //插入一个节点,带一属性。
116             XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode);
117             XmlElement objElement = objXmlDoc.CreateElement(Element);
118             objElement.SetAttribute(Attrib, AttribContent);
119             objElement.InnerText = Content;
120             objNode.AppendChild(objElement);
121         }
122         /// <summary>
123         /// 插入一个节点,不带属性
124         /// </summary>
125         /// <param name="MainNode"></param>
126         /// <param name="Element"></param>
127         /// <param name="Content"></param>
128         public void InsertElement(string MainNode, string Element, string Content)
129         {
130             XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode);
131             XmlElement objElement = objXmlDoc.CreateElement(Element);
132             objElement.InnerText = Content;
133             objNode.AppendChild(objElement);
134         }
135         /// <summary>
136         /// 保存文件
137         /// </summary>
138         public void Save()
139         {
140             //保存文件。
141             try
142             {
143                 objXmlDoc.Save(strXmlFile);
144             }
145             catch (System.Exception ex)
146             {
147                 throw ex;
148             }
149             objXmlDoc = null;
150         }
151     }

=========================================================

实例应用：

string strXmlFile = Server.MapPath("TestXml.xml");
XmlControl xmlTool = new XmlControl(strXmlFile);

// 数据显示条件：节点BID=1所有数据
// dgList.DataSource = xmlTool.GetData("Book/Authors[BID=\"1\"]").Tables[0];;
// dgList.DataBind();

// 更新元素內容条件：节点BID=2
// xmlTool.Replace("Book/Authors[BID=\"2\"]/Content","ppppppp");
// xmlTool.Save();

// 添加一个新节点条件：节点BID=4
// xmlTool.InsertNode("Book","Author","BID","4");
// xmlTool.InsertElement("Book/Author[BID=\"4\"]","Content","aaaaaaaaa");
// xmlTool.InsertElement("Book/Author[BID=\"4\"]","Title","Sex","man","iiiiiiii");
// xmlTool.Save();

// 删除一个指定节点的所有內容和属性条件：节点BID=4
// xmlTool.Delete("Book/Author[BID=\"4\"]");
// xmlTool.Save();

// 删除一个指定节点的子节点条件：节点BID内容为4
// xmlTool.Delete("Book/Authors[BID=\"4\"]");
// xmlTool.Save();

// 删除一个指定节点的子节点条件：节点AuthorsBID的属性Booktype=9
// xmlTool.Delete("Book/Authors[@Booktype=\"9\"]");
// xmlTool.Save();