using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Windows.Forms;
namespace WindowsFormsApplication7
{
class TreeExXMLCls
{
private TreeView thetreeview;
private string xmlfilepath;
XmlTextWriter textWriter;
XmlNode Xmlroot;
XmlDocument textdoc;
public TreeExXMLCls()
{
//----构造函数
textdoc = new XmlDocument();
}
~TreeExXMLCls()
{
//----析构函数
}
#region 遍历treeview并实现向XML的转化
/// <summary>
/// 遍历treeview并实现向XML的转化
/// </summary>
/// <param name="TheTreeView">树控件对象</param>
/// <param name="XMLFilePath">XML输出路径</param>
/// <returns>0表示函数顺利执行</returns>
public int TreeToXML(TreeView TheTreeView, string XMLFilePath)
{
//-------初始化转换环境变量
thetreeview = TheTreeView;
xmlfilepath = XMLFilePath;
textWriter = new XmlTextWriter(xmlfilepath, null);
//-------创建XML写操作对象
textWriter.Formatting = Formatting.Indented;
//-------开始写过程，调用WriteStartDocument方法
textWriter.WriteStartDocument();
//-------写入说明
textWriter.WriteComment("this XML is created from a tree");
//-------添加第一个根节点
textWriter.WriteStartElement("TreeExXMLCls");
textWriter.WriteEndElement();
//------ 写文档结束，调用WriteEndDocument方法
textWriter.WriteEndDocument();
//-----关闭输入流
textWriter.Close();
//-------创建XMLDocument对象
textdoc.Load(xmlfilepath);
//------选中根节点
XmlElement Xmlnode = textdoc.CreateElement(thetreeview.Nodes[0].Text);
Xmlroot = textdoc.SelectSingleNode("TreeExXMLCls");
//------遍历原treeview控件，并生成相应的XML
TransTreeSav(thetreeview.Nodes, (XmlElement)Xmlroot);
return 0;
}
private int TransTreeSav(TreeNodeCollection nodes, XmlElement ParXmlnode)
{
//-------遍历树的各个故障节点，同时添加节点至XML
XmlElement xmlnode;
Xmlroot = textdoc.SelectSingleNode("TreeExXMLCls");
foreach (TreeNode node in nodes)
{
xmlnode = textdoc.CreateElement(node.Text);
ParXmlnode.AppendChild(xmlnode);
if (node.Nodes.Count > 0)
{
TransTreeSav(node.Nodes, xmlnode);
}
}
textdoc.Save(xmlfilepath);
return 0;
}
#endregion
#region 遍历XML并实现向tree的转化
/// <summary>
/// 遍历treeview并实现向XML的转化
/// </summary>
/// <param name="XMLFilePath">XML输出路径</param>
/// <param name="TheTreeView">树控件对象</param>
/// <returns>0表示函数顺利执行</returns>
public int XMLToTree(string XMLFilePath, TreeView TheTreeView)
{
//-------重新初始化转换环境变量
thetreeview = TheTreeView;
xmlfilepath = XMLFilePath;
//-------重新对XMLDocument对象赋值
textdoc.Load(xmlfilepath);
XmlNode root = textdoc.SelectSingleNode("Targ");//读的xml的节点名
foreach (XmlNode subXmlnod in root.ChildNodes)
{
TreeNode trerotnod = new TreeNode();
trerotnod.Text = subXmlnod.Name;
thetreeview.Nodes.Add(trerotnod);
TransXML(subXmlnod.ChildNodes, trerotnod);
}
return 0;
}
private int TransXML(XmlNodeList Xmlnodes, TreeNode partrenod)
{
//------遍历XML中的所有节点，仿照treeview节点遍历函数
foreach (XmlNode xmlnod in Xmlnodes)
{
TreeNode subtrnod = new TreeNode();
subtrnod.Text = xmlnod.Name + xmlnod.Value ;
partrenod.Nodes.Add(subtrnod);
if (xmlnod.ChildNodes.Count > 0)
{
TransXML(xmlnod.ChildNodes, subtrnod);
}
}
return 0;
}
#endregion
}
}
<?xml version="1.0" encoding="utf-8" ?>
<Targ>
<施工图>
<SubType>
<SS1/>
</SubType>
</施工图>
<完工图>
<SubType>
<A/>
<A/>
<A/>
</SubType>
</完工图>
</Targ>
TREE2 :
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.IO;
using System.Threading;
using System.Globalization;
using System.Xml;
namespace WindowsFormsApplication7
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
//XmlReader xn = XmlReader.Create(@"..\..\XML.xml");
TreeExXMLCls a = new TreeExXMLCls();
a.XMLToTree(@"..\..\XML.xml", treeView1);
}
private void populateTreeview()
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Title = "Open XML Document";
dlg.Filter = "XML Files (*.xml)|*.xml";
dlg.FileName = Application.StartupPath + "http://www.cnblogs.com/Mayvar/admin/file://XML.xml";
if (dlg.ShowDialog() == DialogResult.OK)
{
try
{
//Just a good practice -- change the cursor to a
//wait cursor while the nodes populate
this.Cursor = Cursors.WaitCursor;
//First, we'll load the Xml document
XmlDocument xDoc = new XmlDocument();
xDoc.Load(dlg.FileName);
//Now, clear out the treeview,
//and add the first (root) node
treeView2.Nodes.Clear();
treeView2.Nodes.Add(new
TreeNode(xDoc.DocumentElement.Name));
TreeNode tNode = new TreeNode();
tNode = (TreeNode)treeView2.Nodes[0];
//We make a call to addTreeNode,
//where we'll add all of our nodes
addTreeNode(xDoc.DocumentElement, tNode);
//Expand the treeview to show all nodes
treeView2.ExpandAll();
}
catch (XmlException xExc)
//Exception is thrown is there is an error in the Xml
{
MessageBox.Show(xExc.Message);
}
catch (Exception ex) //General exception
{
MessageBox.Show(ex.Message);
}
finally
{
this.Cursor = Cursors.Default; //Change the cursor back
}
}
}
private void addTreeNode(XmlNode xmlNode, TreeNode treeNode)
{
XmlNode xNode;
TreeNode tNode;
XmlNodeList xNodeList;
if (xmlNode.HasChildNodes) //The current node has children
{
xNodeList = xmlNode.ChildNodes;
for (int x = 0; x <= xNodeList.Count - 1; x++)
//Loop through the child nodes
{
xNode = xmlNode.ChildNodes[x];
treeNode.Nodes.Add(new TreeNode(xNode.Name));
tNode = treeNode.Nodes[x];
addTreeNode(xNode, tNode);
}
}
else //No children, so add the outer xml (trimming off whitespace)
//treeNode.Text = xmlNode.InnerXml.Trim();
treeNode.Text = xmlNode.Value;
}
private void button2_Click(object sender, EventArgs e)
{
populateTreeview();
}
}
}