XML 增删查改

<?xml version="1.0" encoding="utf-8"?>
<users>
  <person name="小米" sex="男">
    <tel>15859214524</tel>
    <address>福建</address>
    <pass>123</pass>
  </person>
  <person name="小明" sex="男">
    <tel>15859214520</tel>
    <address>北京</address>
    <pass>123</pass>
  </person>
  <person name="小丽" sex="女">
    <tel>13860632541</tel>
    <address>上海</address>
    <pass>1234</pass>
  </person>
  <person name="小晓" sex="女">
    <tel>13860630541</tel>
    <address>广州</address>
    <pass>1234</pass>
  </person>
  <person name="小鱼" sex="男">
    <tel>138606002541</tel>
    <address>云南</address>
    <pass>1234</pass>
  </person>
</users>

#region 查找信息
    protected string searchInfor(string name)
    {
        string result = "";
        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.Load(Server.MapPath("./xmlPerson.xml"));

        XmlNode rootNode = xmlDoc.SelectSingleNode("users");

        if (rootNode != null)
        {
            foreach (XmlNode node in rootNode.ChildNodes)
            {
                if (node.Attributes["name"].Value == name)
                {
                    result += "name:" + node.Attributes["name"].Value + "<br />";
                    result += "sex:" + node.Attributes["sex"].Value + "<br />";
                    result += "tel:" + node.ChildNodes[0].InnerText + "<br />";
                    result += "address:" + node.ChildNodes[1].InnerText + "<br />";
                    result += "pass:" + node.ChildNodes[2].InnerText + "<br /><br />";
                }
            }
        }
        else
        {
            result = "没找到此条目";
        }
        return result;
    }
    #endregion

    #region   添加一条记录
    protected void addInfor(string name, string sex, string tel, string address, string pass)
    {
        XmlDocument doc = new XmlDocument();
        doc.Load(Server.MapPath("./xmlPerson.xml"));

        XmlElement ele = doc.CreateElement("person");
        ele.SetAttribute("name", name);
        ele.SetAttribute("sex", sex);

        XmlElement ele1 = doc.CreateElement("tel");
        ele1.InnerText = tel;
        ele.AppendChild(ele1);

        XmlElement ele2 = doc.CreateElement("address");
        ele2.InnerText = address;
        ele.AppendChild(ele2);

        XmlElement ele3 = doc.CreateElement("pass");
        ele3.InnerText = pass;
        ele.AppendChild(ele3);

        XmlNode rootEle = doc.SelectSingleNode("users");
        rootEle.AppendChild(ele);

        doc.Save(Server.MapPath("./xmlPerson.xml"));
        Response.Write("添加成功！");
    }
    #endregion

    #region 删除一条记录
    protected void delInfor(string name)
    {
        bool flag = false;
        XmlDocument doc = new XmlDocument();
        doc.Load(Server.MapPath("./xmlPerson.xml"));

        XmlNode rootNode = doc.SelectSingleNode("users");
        if (rootNode != null)
        {
            XmlNodeList nodes = rootNode.ChildNodes;
            foreach (XmlNode node in nodes)
            {
                if (node.Attributes["name"].Value == name)
                {
                    //删除的是所有的子节点
                    //node.RemoveAll();  

                    rootNode.RemoveChild(node);
                    flag = true;
                    break;
                }
            }
        }

        if (flag)
        {
            doc.Save(Server.MapPath("./xmlPerson.xml"));
            Response.Write("删除成功！");
        }
        else
        {
            Response.Write("对不起，未找到此节点");
        }
    }
    #endregion

    #region 修改成功
    protected void editInfor(string name, string newName, string address)
    {
        bool flag = false;
        XmlDocument doc = new XmlDocument();
        doc.Load(Server.MapPath("./xmlPerson.xml"));

        XmlNode rootNode = doc.SelectSingleNode("users");
        if (rootNode != null)
        {
            foreach (XmlNode node in rootNode.ChildNodes)
            {
                if (node.Attributes["name"].Value == name)
                {
                    node.Attributes["name"].Value = newName;
                    node.ChildNodes[1].InnerText = address;
                    flag = true;
                    break;
                }
            }
        }

        if (flag)
        {
            doc.Save(Server.MapPath("./xmlPerson.xml"));
            Response.Write("修改成功！");
        }
        else
        {
            Response.Write("对不起，未找到此节点");
        }
    }
    #endregion