求助XML读写问题

Question

我有一个文件siteconfig.xml
<?xml version="1.0" encoding="utf-8"?>
<siteconfig>
  <paramenter>
    <sitename>XXX网站</sitename>
  </paramenter>
</siteconfig>
然后我在parameters_set.aspx里要读取这个XML文件
ASPX文件<table width="99%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
              <td class="title"><table border="0" cellspacing="0" cellpadding="0">
                <tr>
                  <td width="13"><img src="img/ioc.gif" width="9" height="9" /></td>
                  <td>系统参数设置</td>
                </tr>
              </table></td>
            </tr>
            <tr>
              <td valign="top" class="tdborder">
                  <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                  <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
                </td>
            </tr>
      </table>
CS代码using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml;
using System.Text;
using System.Data;
using System.Data.SqlClient;
    public partial class _manages_parameters_set : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("xml/siteconfig.xml"));         
XmlNode xnserver = xmlDoc.SelectSingleNode("siteconfig/paramenter");
this.TextBox1.Text = xnserver["sitename"].InnerText;
            
        }        protected void Button1_Click(object sender, EventArgs e)
        {
            XmlTextWriter xmlWriter;
            string strFilename = Server.MapPath("xml/siteconfig.xml");
            xmlWriter = new XmlTextWriter(strFilename, Encoding.UTF8);//创建一个xml文档
            xmlWriter.Formatting = Formatting.Indented;
            xmlWriter.WriteStartDocument();
            xmlWriter.WriteStartElement("siteconfig");
            xmlWriter.WriteStartElement("paramenter");
            xmlWriter.WriteStartElement("sitename");
            xmlWriter.WriteString(this.TextBox1.Text);
            xmlWriter.WriteEndElement();
            xmlWriter.Close();
           // this.TextBox1.Text = ReadXml(fileName); 
          
        }    }这样可以读出来，但通过this.TextBox1.Text更新不了数据

Answer 1

xmlDoc 添加完了，怎么没有save，不save怎么保存

Answer 2

xmlDoc.Save(strFilename);
这样子吗？也不对啊，之前的可以保存，就是获取不到this.TextBox1.Text的值，更新不了数据

Answer 3

XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("xml/siteconfig.xml"));         
XmlNode xnserver = xmlDoc.SelectSingleNode("siteconfig/paramenter");
this.TextBox1.Text = xnserver["sitename"].InnerText;
这块是读， XmlTextWriter xmlWriter;
            string strFilename = Server.MapPath("xml/siteconfig.xml");
            xmlWriter = new XmlTextWriter(strFilename, Encoding.UTF8);//创建一个xml文档
            xmlWriter.Formatting = Formatting.Indented;
            xmlWriter.WriteStartDocument();
            xmlWriter.WriteStartElement("siteconfig");
            xmlWriter.WriteStartElement("paramenter");
            xmlWriter.WriteStartElement("sitename");
            xmlWriter.WriteString(this.TextBox1.Text);
            xmlWriter.WriteEndElement();
            xmlWriter.Close();
这块是写，对不？

Answer 4

  protected void Page_Load(object sender, EventArgs e)
        {XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(Server.MapPath("xml/siteconfig.xml"));         
XmlNode xnserver = xmlDoc.SelectSingleNode("siteconfig/paramenter");
this.TextBox1.Text = xnserver["sitename"].InnerText;
            
        }
这里this.TextBox1.Text = xnserver["sitename"].InnerText;要写在
if(!isPostBack)
{
  
}
里面否则你每次点按纽postback的时候textbox1的值又恢复到xml读取的值那你每次当然都不更新的