操作XMLC#（转）

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Text;
  4 using System.Xml;
  5 using System.Data;
  6 
  7 namespace operate_xml
  8 {
  9     class operate_xml1
 10     {
 11         public XmlDocument myXmlDocument;
 12 
 13         /// <summary>
 14         /// 带参构造函数
 15         /// </summary>
 16         /// <param name="xml_name">Xml的路径</param>
 17         public operate_xml1(string xml_name)
 18         {
 19             myXmlDocument = new XmlDocument();
 20             myXmlDocument.Load(xml_name);
 21         }
 22         /// <summary>
 23         /// 更新节点
 24         /// </summary>
 25         /// <param name="xml_name"></param>
 26         /// <param name="name"></param>
 27         /// <param name="value"></param>
 28         /// <param name="weapon"></param>
 29         /// <returns></returns>
 30         public bool updata_xml(string xml_name,string name,string value,string weapon)
 31         {
 32             bool isSuccess = false;
 33             XmlNode node;           
 34            
 35             node = myXmlDocument.DocumentElement; //获取XML文档的根
 36             try
 37             {
 38                 foreach (XmlNode node1 in node.ChildNodes)
 39                     foreach (XmlNode node2 in node1.ChildNodes)
 40                     {
 41                         if (node2.InnerText == name)
 42                         {
 43                             node2.NextSibling.InnerText = value;        //获取下一个节点
 44                             node2.NextSibling.NextSibling.InnerText = weapon;   //获取下一个节点
 45                             isSuccess = true;                       
 46                         }
 47                     }
 48                 myXmlDocument.Save(xml_name);
 49                
 50             }
 51             catch (Exception ex)
 52             {               
 53             }
 54             return isSuccess;
 55         }
 56         /// <summary>
 57         /// 添加节点
 58         /// </summary>
 59         /// <param name="xml_name"></param>
 60         /// <param name="name"></param>
 61         /// <param name="power"></param>
 62         /// <param name="weapon"></param>
 63         /// <returns></returns>
 64         public bool CreatNode(string xml_name,string name,string power,string weapon)
 65         {
 66             bool isSuccess = false;
 67             XmlNode node;
 68             node = myXmlDocument.DocumentElement;
 69             try
 70             {
 71                 XmlElement subElement = myXmlDocument.createElement_x("body");
 72                
 73 
 74                 XmlElement subElement1 = myXmlDocument.createElement_x("name");
 75                 subElement1.InnerText = name;
 76                 XmlElement subElement2 = myXmlDocument.createElement_x("power");
 77                 subElement2.InnerText = power;
 78                 XmlElement subElement3 = myXmlDocument.createElement_x("weapon");
 79                 subElement3.InnerText = weapon;
 80 
 81                 subElement.AppendChild(subElement1);
 82                 subElement.AppendChild(subElement2);
 83                 subElement.AppendChild(subElement3);
 84 
 85                 node.AppendChild(subElement);
 86                 myXmlDocument.Save(xml_name);
 87 
 88                 isSuccess = true;
 89             }
 90             catch (Exception ex)
 91             { }
 92             return isSuccess;
 93         }
 94         /// <summary>
 95         /// 删除节点，第一种方法
 96         /// </summary>
 97         /// <param name="xml_name"></param>
 98         /// <param name="name"></param>
 99         /// <returns></returns>
100         public bool DeleteNode(string xml_name, string name)
101         {
102             bool isSuccess = false;
103             XmlNode node;
104             node = myXmlDocument.DocumentElement;
105             try
106             {
107                 foreach (XmlNode node1 in node.ChildNodes)
108                     foreach (XmlNode node2 in node1.ChildNodes)
109                         if (node2.InnerText == name)
110                             node2.ParentNode.RemoveAll();
111                 myXmlDocument.Save(xml_name);   //记得要保存
112                 isSuccess = true;
113             }
114             catch (Exception ex)
115             { }
116             return isSuccess;
117         }
118         /// <summary>
119         /// 删除节点，第二种方法
120         /// </summary>
121         /// <param name="xml_name"></param>
122         /// <param name="name"></param>
123         /// <returns></returns>
124         public bool DeleteNode1(string xml_name, string name)
125         {
126             bool isSuccess = false;
127             XmlNode node1;
128             XmlNodeList nodelist = myXmlDocument.SelectNodes("histroy/body/name");   //选择所有匹配name的节点
129             foreach (XmlNode node in nodelist)
130             {              
131                     if (node.InnerText == name)
132                     {
133                         node1 = node.ParentNode;
134                         node1.ParentNode.RemoveChild(node1);
135                         isSuccess = true;
136                     }               
137             }
138             myXmlDocument.Save(xml_name);
139             return isSuccess;
140         }
141         /// <summary>
142         /// 查询人物
143         /// </summary>
144         /// <param name="name"></param>
145         /// <returns></returns>
146         public XmlNode getxmlnode(string name)
147         {
148             XmlNode xmlNode=null;           
149             XmlNodeList nodelist = myXmlDocument.SelectNodes("//histroy//body//name");   //选择所有匹配name的节点
150             foreach (XmlNode node in nodelist)
151             {
152                 if (node.InnerText == name)
153                 {
154                     xmlNode = node.ParentNode;                   
155                 }
156             }
157             return xmlNode;
158         }
159         /// <summary>
160         /// 使用dataset显示整个XML文件
161         /// </summary>
162         /// <returns></returns>
163         public DataSet GetDs()
164         {
165             DataSet ds = new DataSet();
166             try
167             {
168                 System.IO.StringReader read = new System.IO.StringReader(myXmlDocument.SelectSingleNode("//histroy").OuterXml);
169                 ds.ReadXml(read);
170                 read.Close();
171             }
172             catch
173             { }
174             return ds;
175         }
176 
177    }
178 
179 }
原文：http://blog.sina.com.cn/s/blog_66e765d90100j0az.html