• asp.net 操作xml


    转载自:http://www.cnblogs.com/cfam/archive/2006/11/17/563441.html

    asp.net 对xml文件的读写,添加,修改,删除操作

    using System;
    using System.Collections;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Web;
    using System.Web.SessionState;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Web.UI.HtmlControls;
    using System.Xml;
    private XmlDocument xmlDoc;

            
    //load xml file
            private void LoadXml()
            
    {
                xmlDoc
    =new XmlDocument();
                xmlDoc.Load(Server.MapPath(
    "User.xml"));
            }



            
    //添加节点
            private void AddElement()
            
    {
                
                LoadXml();

                XmlNode xmldocSelect
    =xmlDoc.SelectSingleNode("user");
                
                XmlElement el
    =xmlDoc.CreateElement("person"); //添加person节点
                el.SetAttribute("name","风云"); //添加person节点的属性"name"
                el.SetAttribute("sex","");   //添加person节点的属性 "sex"
                el.SetAttribute("age","25");   //添加person节点的属性 "age"
                
                 XmlElement xesub1
    =xmlDoc.CreateElement("pass"); //添加person节点的里的节点
                 xesub1.InnerText="123";//设置文本节点
                 el.AppendChild(xesub1);
                 XmlElement xesub2
    =xmlDoc.CreateElement("Address");
                 xesub2.InnerText
    ="昆明";//设置文本节点
                 el.AppendChild(xesub2);

                xmldocSelect.AppendChild(el);
                xmlDoc.Save(Server.MapPath(
    "user.xml"));


            }



            

            
    //修改节点
            private void UpdateElement()
            
    {
                LoadXml();
                XmlNodeList nodeList
    =xmlDoc.SelectSingleNode("user").ChildNodes;//获取bookstore节点的所有子节点
                foreach(XmlNode xn in nodeList)//遍历所有子节点
                {
                    XmlElement xe
    =(XmlElement)xn;//将子节点类型转换为XmlElement类型
                    if(xe.GetAttribute("name")=="风云")//如果name属性值为“风云”
                    {
                        xe.SetAttribute(
    "name","发明");

                        
                        
    //如果下面有子节点在下走
                         XmlNodeList nls=xe.ChildNodes;//继续获取xe子节点的所有子节点
                        foreach(XmlNode xn1 in nls)//遍历
                        {
                           XmlElement xe2
    =(XmlElement)xn1;//转换类型
                            if(xe2.Name=="pass")//如果找到
                            {
                                xe2.InnerText
    ="66666";//则修改
                                break;

                            }

                        }


                        
    break;
                    }

                }

               xmlDoc.Save(Server.MapPath(
    "user.xml"));//保存
            }



            
    //删出节点
            private void deleteNode()
            
    {
                
                LoadXml();
                XmlNodeList xnl
    =xmlDoc.SelectSingleNode("user").ChildNodes;
     
                
    foreach(XmlNode xn in xnl)
                
    {
                    XmlElement xe
    =(XmlElement)xn;
                    
                    
    if(xe.GetAttribute("name")=="发明")
                    
    {
                        
    //xe.RemoveAttribute("name");//删除name属性
                       // xe.RemoveAll();//删除该节点的全部内容
                        xe.ParentNode.RemoveChild(xe);

                        
                        
    break;
                    }

                    
                }

                xmlDoc.Save(Server.MapPath(
    "user.xml"));//保存
            }


            
    private void showIt()
            
    {
                LoadXml();
                XmlNode xn
    =xmlDoc.SelectSingleNode("user");
     
                XmlNodeList xnl
    =xn.ChildNodes;
       
                
    foreach(XmlNode xnf in xnl)
                
    {
                    XmlElement xe
    =(XmlElement)xnf;
    //                Console.WriteLine(xe.GetAttribute("name"));//显示属性值
    //                Console.WriteLine(xe.GetAttribute("sex"));
    // 
    //                XmlNodeList xnf1=xe.ChildNodes;
    //                foreach(XmlNode xn2 in xnf1)
    //                {
    //                    Console.WriteLine(xn2.InnerText);//显示子节点点文本
    //                }

                }


            }

    XML的样式:

    <?xml version="1.0" encoding="gb2312"?>
    <user>
      
    <person>
      
    </person>
      
    <person name="风拉" sex="男" age="25">
        
    <pass>123</pass>
        
    <Address>大明</Address>
      
    </person>
      
    <person name="风云" sex="女" age="25">
        
    <pass>123</pass>
        
    <Address>昆明</Address>
      
    </person>
    </user>

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  • 原文地址:https://www.cnblogs.com/MFxxk/p/2370266.html
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