asp.net xml 增删改操作

user.xml
<?xml version="1.0" encoding="utf-8"?>
<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>
  </person>
  <person name="云" sex="女" age="25">
    <pass>123</pass>
    <Address>松江区</Address>
  </person>
</user>

1, private XmlDocument xmlDoc;


    //添加
    private void InsertElement()
    {

        XmlNode xmldocselect = xmlDoc.SelectSingleNode("user");
        XmlElement el = xmlDoc.CreateElement("person");
        el.SetAttribute("name", "风云");
        el.SetAttribute("sex", "女");
        el.SetAttribute("age", "25");
        XmlElement xesub1 = xmlDoc.CreateElement("pass");
        xesub1.InnerText = "123";
        el.AppendChild(xesub1);
        xmldocselect.AppendChild(el);
        XmlElement xx = xmlDoc.CreateElement("Address");
        xx.InnerText = "松江区";
        el.AppendChild(xx);
        xmlDoc.Save(Server.MapPath("user.xml"));
    }
    //修改
    private void UpdateElement()
    {
        LoadXml();
        XmlNodeList nodeList = xmlDoc.SelectSingleNode("user").ChildNodes;
        foreach (var item in nodeList)
        {
            XmlElement xe = (XmlElement)item;
            if (xe.GetAttribute("name") == "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



    }

    //删除
    private void DeleteElement()
    {
        LoadXml();
        XmlNodeList nodeList = xmlDoc.SelectSingleNode("user").ChildNodes;
        foreach (var item in nodeList)
        {
            XmlElement xe = (XmlElement)item;
            if (xe.GetAttribute("name") == "发明")
            {
                xe.RemoveAll();

                ////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

    }

    //显示
    private void showIt()
    {
        LoadXml();
        XmlNode xn = xmlDoc.SelectSingleNode("user");
        XmlNodeList xnl = xn.ChildNodes;
        foreach (var item in xnl)
        {
            XmlElement xe=(XmlElement)item;
            Response.Write(xe.GetAttribute("name"));
        }
    }
    //查找xml
    private void LoadXml()
    {
        xmlDoc = new XmlDocument();
        xmlDoc.Load(Server.MapPath("User.xml"));
    }



adminFunction.xml

<?xml version="1.0" encoding="utf-8" ?>
<functions>
  <function name="商品发布" url="~/page/leaves/leave.aspx">
    <subfunction name="添加商品" url="~/page/leaves/leave.aspx">
    </subfunction>
    <subfunction name="添加商品" url="~/page/leaves/leave.aspx">
    </subfunction>
  </function>
  <function name="留言发布" url="~/page/leaves/leave.aspx">
    <subfunction name="添加留言" url="~/page/leaves/leave.aspx">
    </subfunction>
    <subfunction name="修改留言" url="~/page/leaves/leave.aspx">
    </subfunction>
  </function>
</functions>



    private void InitFunctions()
    {
        XmlDocument xmldoc = new XmlDocument();
        xmldoc.Load(Server.MapPath("adminFunction.xml"));
        XmlNode root = xmldoc.DocumentElement;
        tvFunction.Nodes.Add(CreateNode(root,new TreeNode()));
    }

    //递归
    /// <summary>
    /// 
    /// </summary>
    /// <param name="node">根节点</param>
    /// <param name="tn">根节点对应的树节点</param>
    /// <returns></returns>
    private TreeNode CreateNode(XmlNode root, TreeNode tn)
    {

        foreach (XmlNode node in root.ChildNodes)
        {
            XmlElement subxmlEmt = node as XmlElement;
            string subname = subxmlEmt.GetAttribute("name");
            string suburl = subxmlEmt.GetAttribute("url");
            TreeNode subtn = new TreeNode();
            subtn.Text = subname;
            subtn.NavigateUrl = suburl;
            if (node.HasChildNodes)
            {
                subtn.ChildNodes.Add(CreateNode(node, subtn));
            }
            tn.ChildNodes.Add(subtn);
        }
        return tn;

    }


    //读实例
    private void ReadEx()
    {
        string path1 = Server.MapPath("TextFile.txt");
        if (File.Exists(path1))
        {
            StreamReader reader = new StreamReader(path1, System.Text.Encoding.GetEncoding("gb2312"));

                string str = reader.ReadToEnd();
                Response.Write((str));
                reader.Close();
        }

        WriteFile(path1,"vvvvv");
    }
    //写文件
    /// </summary>
    /// <param name="Path">文件路径</param>
    /// <param name="Strings">文件内容</param>
    public static void WriteFile(string Path, string Strings)
    {
       
        if (!System.IO.File.Exists(Path))
        {
            System.IO.FileStream f = System.IO.File.Create(Path);
            f.Close();
        }
        System.IO.StreamWriter f2 = new System.IO.StreamWriter(Path, false, System.Text.Encoding.GetEncoding("gb2312"));
        f2.Write(Strings);
        f2.Close();
        f2.Dispose();
    }