谁可以给出一些C Sharp读XML数据的方法...

假如有以下的XML文件<?xml version="1.0" encoding="UTF-8"?>
<contacts>
<contact>
<name>张小三</name>
<sex>男</sex>
<mobile>13899220203</mobile>
</contact>
<contact>
<name>王晓光</name>
<sex>男</sex>
<mobile>13919281133</mobile>
</contact>
<contact>
<name>李小明</name>
<sex>男</sex>
<mobile>13800818111</mobile>
</contact>
</contacts>
怎么在一个TreeView或是一个TextBox多行的显示...格式:contacts
contact
  name
   第一个人的名字
  /name
  sex
   性别
  /sex
  mobile
   手机号码
  /mobile
/contact contact
  name
   第二个人的名字
  /name
  sex
   性别
  /sex
  mobile
   手机号码
  /mobile
/contact contact
  name
   第三个人的名字
  /name
  sex
   性别
  /sex
  mobile
   手机号码
  /mobile
/contact
/contacts

解决方案 »

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XmlDocument _xml = new XmlDodument();
_xml.Load(文件路径);
XmlNodeList _nodeList = _xml.SelectNodes("contact");
foreach(XmlNode _node in _nodeList )
{
TextBox1.Text = _node.ChildNodes.Item(1).Value;
}
大概这样
Visual C#中使用XML之实现DOM
http://dev.yesky.com/msdn/319/2502319.shtml    C#中操作xml文件（插入节点、修改、删除）
http://www.qqread.com/csharp/p359862.html
C#中操作XML修改完整版
http://www.itwis.com/html/net/c/20080219/954.html
Manipulate XML data with XPath and XmlDocument (C#)
http://www.codeproject.com/KB/cpp/myXPath.aspx
使用 Visual C# .NET 通过 XPath 表达式查询 XML
http://support.microsoft.com/kb/308333/zh-cn
ASP.NET 2.0 中的数据访问--XmlDataSource
http://www.itkm.cn/article.asp?id=225
使用XMLDataSource简单实现多级下拉菜单
http://blog.csdn.net/cui2nd/archive/2005/12/20/557315.aspx
XML技术讲座之六 XML中的命名空间
http://cnw2005.cnw.com.cn/issues/2000/49/4914b.asp
C#操作xml之xpath语法
http://www.cnblogs.com/amboyna/archive/2007/12/18/1003852.html
XML文件操作指南
http://www.cnblogs.com/jetz/archive/2005/07/30/203831.html
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ShowImage.aspx.cs" Inherits="Xml_ShowImage" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div style="text-align: center">
        <asp:Label ID="Label1" runat="server" Text="利用XML传送数据" Width="196px"></asp:Label><br />
        <br />
        <asp:Label ID="Label2" runat="server" Text="上传的图片" Width="94px"></asp:Label>
        <input id="File1" runat="server" type="file" /><br />
        <br />
        <asp:Label ID="Label3" runat="server" Text="描述"></asp:Label>
        <asp:TextBox ID="TextBox1" runat="server" Height="71px" TextMode="MultiLine" Width="280px"></asp:TextBox><br />
        <br />
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="保存" /></div>
    </form>
</body>
</html>
   protected void Button1_Click(object sender, EventArgs e)
    {
        string str = File1.PostedFile.FileName;
        string filename = Path.GetFileName(str);
        int fileLength = File1.PostedFile.ContentLength;        if (fileLength < 0)
            return;
        Byte[] ByteImage = new byte[fileLength];
        Stream ObjectStream = File1.PostedFile.InputStream;        ObjectStream.Read(ByteImage, 0, fileLength);        string strfilename = Server.MapPath(".\\Db\\image.xml");        XmlDocument doc = new XmlDocument();
        doc.Load(strfilename);
        XmlNode nodelist = doc.SelectSingleNode("ImageMes");
        //XmlNodeList node = doc.SelectSingleNode("imageMes").ChildNodes;        XmlElement xe = doc.CreateElement("Image");
        XmlElement xe1 = doc.CreateElement("ImageType");
        xe1.InnerText = File1.PostedFile.ContentType;
        xe.AppendChild(xe1);        XmlElement xe2 = doc.CreateElement("ImageSize");
        xe2.InnerText = File1.PostedFile.ContentLength;
        xe.AppendChild(xe2);        XmlElement xe3 = doc.CreateElement("ImageDescription");
        xe3.InnerText = TextBox1.Text;
        xe.AppendChild(xe3);        XmlElement xe4 = doc.CreateElement("ImageData");
        xe4.InnerText = Convert.ToBase64String(ByteImage);
        xe.AppendChild(xe4);        nodelist.AppendChild(xe);
        doc.Save(Server.MapPath(".\\Db\\image.xml"));
    }
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="AddNews.aspx.cs" Inherits="News_AddNews" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
    <link href="../Css/StyleSheet.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <form id="form1" runat="server">
    <div style="text-align: center">
        <table border="0" cellpadding="0" cellspacing="0" style="width: 651px; height: 181px">
            <tr>
                <td colspan="2">
                    <asp:Label ID="Label1" runat="server" Text="添加新闻" Width="96px" Height="22px"></asp:Label></td>
            </tr>
            <tr>
                <td style="width: 100px; height: 9px; text-align: center;">
                    <asp:Label ID="Label2" runat="server" Text="新闻标题" Width="94px"></asp:Label></td>
                <td style="width: 203px; height: 9px;">
                    <asp:TextBox ID="TextBox1" runat="server" Width="299px"></asp:TextBox></td>
            </tr>
            <tr>
                <td style="width: 100px; height: 19px; text-align: center;">
                    <asp:Label ID="Label5" runat="server" Text="新闻类别" Width="68px"></asp:Label></td>
                <td style="width: 203px; height: 19px; text-align: left;">
                    <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox></td>
            </tr>
            <tr>
                <td style="width: 100px; height: 19px; text-align: center">
                    <asp:Label ID="Label3" runat="server" Text="作者" Width="94px"></asp:Label></td>
                <td style="width: 203px; height: 19px; text-align: left">
                    <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox></td>
            </tr>
            <tr>
                <td style="width: 100px; text-align: center;">
                    <asp:Label ID="Label4" runat="server" Text="内容" Width="90px"></asp:Label></td>
                <td style="width: 203px">
                    <asp:TextBox ID="TextBox3" runat="server" Height="174px" TextMode="MultiLine" Width="464px"></asp:TextBox></td>
            </tr>
            <tr>
                <td colspan="2">
                    <asp:Button ID="Button1" runat="server" Text="添加" OnClick="Button1_Click" /></td>
            </tr>
        </table>

    </div>
    </form>
</body>
</html> protected void Button1_Click(object sender, EventArgs e)
    {
        string title = TextBox1.Text;
        string type = TextBox4.Text;
        string author = TextBox2.Text;
        string content = TextBox3.Text;
        string datetime = DateTime.Now.ToString();
        //首先加载XML
        string strxml = Server.MapPath("../News/Xml/XMLFile.xml");
        XmlDocument Xmldoc = new XmlDocument();
        Xmldoc.Load(strxml);
        string id;
        //XML的根节点
        XmlNode xn = Xmldoc.SelectSingleNode("Mes");
        XmlElement xe = Xmldoc.CreateElement("News");
        if (xn.HasChildNodes)
        {
            id = Convert.ToString(Convert.ToInt32(xn.LastChild.FirstChild.InnerText) + 1);
        }
        else
        {
            id = "1";
        }
        //添加新闻ID
        XmlElement xid = Xmldoc.CreateElement("NewsID");
        xid.InnerText = id;
        xe.AppendChild(xid);
        //添加新闻类别
        XmlElement xtype = Xmldoc.CreateElement("NewsType");
        xtype.InnerText = type;
        xe.AppendChild(xtype);

        //添加新闻作者
        XmlElement xauthor =Xmldoc.CreateElement("NewsAuthor");
        xauthor.InnerText = author;
        xe.AppendChild(xauthor);
        //添加新闻标题
        XmlElement xtitle = Xmldoc.CreateElement("NewsTitle");
        xtitle.InnerText = title;
        xe.AppendChild(xtitle);
        //添加新闻内容
        XmlElement xcontent =Xmldoc.CreateElement("NewsContent");
        xcontent.InnerText = content;
        xe.AppendChild(xcontent);        //添加新闻时间
        XmlElement xdate = Xmldoc.CreateElement("NewsDate");
        xdate.InnerText = datetime;
        xe.AppendChild(xdate);        xn.AppendChild(xe);
        Xmldoc.Save(strxml);
        Response.Write("<script language='javascript'>alert('添加成功');</script>");

    }
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="NewsEdit.aspx.cs" Inherits="News_NewsEdit" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
    <link href="../Css/StyleSheet.css" rel="stylesheet" type="text/css" />
    <script type="text/javascript">
     function Init()
    {
      var vv="中国";
      var ss='<%=ShowMes("vv") %>';
      alert(ss);
    }    </script>
</head>
<body style="text-align: center">
    <form id="form1" runat="server">
     <table border="0" cellpadding="0" cellspacing="0" style="width: 651px; height: 181px">
            <tr>
                <td colspan="2">
                    <asp:Label ID="Label1" runat="server" Text="修改新闻" Width="96px" Height="22px"></asp:Label></td>
            </tr>
            <tr>
                <td style="width: 100px; height: 9px; text-align: center;">
                    <asp:Label ID="Label2" runat="server" Text="新闻标题" Width="94px"></asp:Label></td>
                <td style="width: 203px; height: 9px;">
                    <asp:TextBox ID="TextBox1" runat="server" Width="299px"></asp:TextBox></td>
            </tr>
            <tr>
                <td style="width: 100px; height: 19px; text-align: center;">
                    <asp:Label ID="Label5" runat="server" Text="新闻类别" Width="68px"></asp:Label></td>
                <td style="width: 203px; height: 19px; text-align: left;">
                    <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox></td>
            </tr>
            <tr>
                <td style="width: 100px; height: 19px; text-align: center">
                    <asp:Label ID="Label3" runat="server" Text="作者" Width="94px"></asp:Label></td>
                <td style="width: 203px; height: 19px; text-align: left">
                    <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox></td>
            </tr>
            <tr>
                <td style="width: 100px; text-align: center;">
                    <asp:Label ID="Label4" runat="server" Text="内容" Width="90px"></asp:Label></td>
                <td style="width: 203px">
                    <asp:TextBox ID="TextBox3" runat="server" Height="174px" TextMode="MultiLine" Width="464px"></asp:TextBox></td>
            </tr>
            <tr>
                <td colspan="2">
                    <asp:Button ID="Button1" runat="server" Text="提交" OnClick="Button1_Click" /></td>
            </tr>
        </table>

    </form>
</body>
</html> protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            string strurl = Server.MapPath("../News/Xml/XMLFile.xml");
            string id = Request.QueryString["id"];
            XmlDocument doc = new XmlDocument();
            doc.Load(strurl);
            XmlNode node = doc.SelectSingleNode("Mes/News[NewsID='" + id + "']");
            if (node.HasChildNodes)
            {
                //类别，作者，标题
                TextBox1.Text = node.ChildNodes[3].InnerText;
                TextBox2.Text = node.ChildNodes[2].InnerText;
                TextBox3.Text = node.ChildNodes[4].InnerText;
                TextBox4.Text = node.ChildNodes[1].InnerText;
            }

        }    }
    //public void Page_Init(object sender, EventArgs e)
    //{
    //    ShowMes("aa");
    //}
    public string ShowMes(string str)
    {
        string ss = "你好" + str;
        return ss;
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string strurl = Server.MapPath("../News/Xml/XMLFile.xml");
        string id = Request.QueryString["id"];
        string title = Request.Form["TextBox1"];
        string type = Request.Form["TextBox4"];
        string author = Request.Form["TextBox2"];
        string content = Request.Form["TextBox3"];
        XmlDocument doc = new XmlDocument();
        doc.Load(strurl);
        XmlNode xnode = doc.SelectSingleNode("Mes");
        XmlNodeList nodelist = xnode.ChildNodes;
        for(int i=0;i<nodelist.Count;i++)
        {
            XmlNodeList xm = nodelist.Item(i).SelectNodes("NewsID");
            XmlElement xn = (XmlElement)xm.Item(0);
            if (xn.InnerText == id)
            {
                xn.ParentNode.ChildNodes.Item(1).InnerText = type;
                xn.ParentNode.ChildNodes.Item(2).InnerText= author;
                xn.ParentNode.ChildNodes.Item(3).InnerText = title;
                xn.ParentNode.ChildNodes.Item(4).InnerText = content;
                //xn.ParentNode.ChildNodes["content"] = content;
            }
        }
        doc.Save(strurl);    }LZ还要吗？
xe2.InnerText = File1.PostedFile.ContentLength;这句有错:F:\study_online\WebForm2.aspx.cs(81): 无法将类型“int”隐式转换为“string”我只想简单易懂的...你们注释也没个...真的没法弄下去...我是菜鸟...