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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Chapter_VII_DirectoryTreeView" %>
<!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>Directory Tree View</title>
</head>
<body>
<form id="form1" runat="server">
<asp:TreeView ID="TreeView1"
runat="server"
SelectedNodeStyle-ForeColor="Green"
SelectedNodeStyle-VerticalPadding="0"
ShowCheckBoxes="Leaf"
BackColor="White"
Font-Size="Medium"
ForeColor="Blue"></asp:TreeView>
</form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.IO;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Chapter_VII_DirectoryTreeView : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
String directoryPath = "C:\\";
DirectoryInfo directoryInfo = new System.IO.DirectoryInfo(directoryPath);
if (directoryInfo != null)
{
TreeNode rootDirectoryNode = CreateDirectoryTreeView(directoryInfo, null);
if (rootDirectoryNode != null)
TreeView1.Nodes.Add(rootDirectoryNode);
}
}
}
TreeNode CreateDirectoryTreeView(DirectoryInfo directoryInfo, TreeNode parentNode)
{
TreeNode baseNode = new TreeNode(directoryInfo.Name);
DirectoryInfo[] subDirectories = directoryInfo.GetDirectories();
FileInfo[] filesInDirectory = directoryInfo.GetFiles();
for (int i = 0, n = subDirectories.Length; i < n; i++)
CreateDirectoryTreeView(subDirectories[i], baseNode);
for (int ctr = 0, cnt = filesInDirectory.Length; ctr < cnt; ctr++)
{
TreeNode childNode = new TreeNode(filesInDirectory[ctr].Name);
baseNode.ChildNodes.Add(childNode);
}
if (parentNode == null)
return baseNode;
parentNode.ChildNodes.Add(baseNode);
return parentNode;
}
}
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