（找）C#读取xml指定节点的代码

Question

如题，在线等，测试通过，即可给分

Answer 1

你可以看看LINQ_XML,先Load文档后，在调用Elements方法

Answer 2

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Xml;namespace treeView4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            getxml();                      //在页面上的空间上显示treeView
            ScanNodes(treeView1.Nodes);     //遍历所有的treeNode,并对每一个遍历到的treeNode的tag赋值        }
        private void ScanNodes(TreeNodeCollection ANodes)
        {
            if (ANodes == null) return;
            foreach (TreeNode vNode in ANodes)
            {
                vNode.Tag = new tagTree(vNode,vNode.GetNodeCount(false));     //每个treeNode的tag都保存一个tagTree对象
                ScanNodes(vNode.Nodes);
            }
        }        public void getxml()
        {
            TreeNode t1 = new TreeNode();
            t1.Text = "中国";
            treeView1.Nodes.Add(t1);
            XmlDocument doc = new XmlDocument();
            doc.Load("data.xml");
            XmlNodeList nodeList;
            XmlNode root = doc.DocumentElement;
            nodeList = root.SelectNodes("descendant::node");
            foreach (XmlNode node in nodeList)
            {
                string s = node.Attributes.GetNamedItem("pid").Value;
                if (s == "0")
                {
                    creattree(node.InnerText, t1, "s", nodeList);
                }
            }
        }        public void creattree(string text, TreeNode tnd, string pid, XmlNodeList nodeList)
        {
            TreeNode t2 = new TreeNode();
            t2.Text = text;
            string aValue = "";
            foreach (XmlNode node in nodeList)
            {
                if (node.InnerText == text)
                {
                    XmlNode a_id = node.Attributes.GetNamedItem("id");
                    aValue = a_id.Value;
                    break;
                }
            }            foreach (XmlNode node in nodeList)
            {
                if (node.Attributes.GetNamedItem("pid").Value == aValue)
                {
                    string s = node.Attributes.GetNamedItem("pid").Value;
                    creattree(node.InnerText, t2, "s", nodeList);
                }
            }
            tnd.Nodes.Add(t2);
        }        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            dataGridView1.Columns.Clear(); ;
            dataGridView1.Columns.Add("类型", "类型");
            dataGridView1.Columns.Add("值", "值");
            TreeNode q1 = treeView1.SelectedNode;
            tagTree a = (tagTree)q1.Tag;
            if (a.getParent() != "")
            {
                string[] strParent = { "父节点", a.getParent() };
                dataGridView1.Rows.Add(strParent);
            }
            int i = 0;
            while (a.child[i] != "")
            {
                string[] strChild= { "子节点", a.child[i] };
                dataGridView1.Rows.Add(strChild);
                i++;
            }
            
            dataGridView1.AllowUserToAddRows = false;           //删除最后一行，不容许用户添加数据
        }        private void Form1_Load(object sender, EventArgs e)
        {        }
       
        }
    }using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;namespace treeView4
{
    class tagTree 
    {
        public string[] child ;
        private string parent = "";
        public tagTree()
        {        }
        public tagTree(TreeNode selectNode, int coutChild )
          {
              int j = 0;
              int i = 0;
              TreeNode[] s1Node;
              s1Node = new TreeNode[6];
              TreeNode pnode;
              s1Node[0] = selectNode.FirstNode;
              child = new string[6];
              for (i = 0; i < 6; i++)
              {
               child[i] = "" ;
              }
              for (i = 0; i < coutChild; i++)
              {
                  j++;
                  s1Node[j] = s1Node[j - 1].NextNode;
                  child[i] = s1Node[i].Text;
              }
              if (s1Node[i + 1] != null)
              {
                  child[i + 1] = s1Node[i + 1].Text;
              }              if (selectNode.Parent is TreeNode)
              {
                  pnode = (TreeNode)selectNode.Parent;
                  parent = pnode.Text;
              }
          }
        public string getParent()
        {
            return parent;
        }
      }
    }
<?xml   version= "1.0"   encoding= "gb2312"   ?> 
<nodes>
  <node id="2" pid="1">武汉</node>
  <node id="1" pid="0">湖北省</node>
  <node id="4" pid="2">汉口</node>
  <node id="5" pid="2">武昌</node>
  <node id="3" pid="1">黄石</node>
  <node id="7" pid="3">黄石2.1</node>
  <node id="6" pid="3">黄石2.2</node>
  <node id="8" pid="7">黄石3.1</node>
  <node id="9" pid="7">黄石3.2</node>
  <node id="10" pid="1">孝感</node>
  <node id="11" pid="10">云梦</node>
  <node id="12" pid="10">孝南</node>
  <node id="12" pid="10">安陆</node>
  <node id="12" pid="10">应城</node>
</nodes>我做的是选中一个节点
 显示他父子节点的信息

Answer 3

public static string getFilePath()
{
     string strpath = string.Empty;
     XmlDocument missionDoc = new XmlDocument();
     missionDoc.Load("App.xml");
     XmlNode rootNode = missionDoc.DocumentElement;
     foreach (XmlNode node in rootNode.SelectNodes("/configuration/configfilepath"))
     {
         strpath = node.InnerText;
     }
     return strpath;
}App.xml<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configfilepath>D:\Temp</configfilepath>
</configuration>