C#读取xml文件写入到TreeView中

时间：2023-03-08 21:02:49

开发过程中我们会遇到一些读取xml文件的时候，下面是我学习的整理。

用XmlDocument读取加载

 XmlDocument doc = new XmlDocument();

  doc.Load("XML.xml");//xml的文件路径

 //获取到XML的根元素进行操作

XmlNodeList xn = doc.SelectNodes("countries/country");

　完整代码如下

前端：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="demo0427.aspx.cs" Inherits="WebApplication2.demo0427" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

    <title>xml加载到tree中</title>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        <asp:TreeView ID="TreeView1" runat="server" ImageSet="XPFileExplorer" NodeIndent="15">

            <HoverNodeStyle Font-Underline="True" ForeColor="#6666AA" />

            <Nodes>

                <asp:TreeNode Text="跟节点" Value="跟节点">

                    <asp:TreeNode Text="子节点1" Value="子节点1"></asp:TreeNode>

                    <asp:TreeNode Text="子节点2" Value="子节点2"></asp:TreeNode>

                </asp:TreeNode>

            </Nodes>

            <NodeStyle Font-Names="Tahoma" Font-Size="8pt" ForeColor="Black" HorizontalPadding="2px" NodeSpacing="0px" VerticalPadding="2px" />

            <ParentNodeStyle Font-Bold="False" />

            <SelectedNodeStyle BackColor="#B5B5B5" Font-Underline="False" HorizontalPadding="0px" VerticalPadding="0px" />

        </asp:TreeView>

    </div>

    </form>

</body>

</html>

后端：

using System;

using System.Collections.Generic;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Xml;

using System.Xml.Linq;

namespace WebApplication2

{

    public partial class demo0427 : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            if (!IsPostBack)

            {

                string path3 = Server.MapPath("/");//获得当前的路径

                //将XML文件加载进来

                XmlDocument doc = new XmlDocument();

                doc.Load("" + path3 + "XML.xml");

                //获取到XML的根元素进行操作

                XmlNodeList xn = doc.SelectNodes("countries/country");

                foreach (XmlNode xn1 in xn)

                {   //获取第一个元素text的值

                    string text = xn1.FirstChild.InnerXml;

                    XmlNode v = xn1.SelectSingleNode("value");

                    string re = v.InnerText;

                    //获取属性值

                    string val = v.Attributes["id"].Value;

                    Console.WriteLine(text + ":" + val + ":" + re);

                    //第一级树

                    TreeNode trerotnod = new TreeNode();

                    //第二级树

                    TreeNode x = new TreeNode();

                    TreeNode y = new TreeNode();

                    trerotnod.Text = xn1.InnerText;

                    y.Text = val;

                    x.Text = re;

                    //把第二级的树添加到第一级的树中

                    trerotnod.ChildNodes.Add(x);

                    trerotnod.ChildNodes.Add(y);

                    TreeView1.Nodes.Add(trerotnod);

                }

            }

        }

    }

}

　　

　

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