File Directory ASP.Net Tutorial


            <%@ Page Language="C#" %>


    protected void Page_Load(object sender, EventArgs e)
    {
        foreach (System.IO.DriveInfo drive in System.IO.DriveInfo.GetDrives())
        {
            TreeNode node = new TreeNode();
            node.Value = drive.Name;
            if (drive.IsReady)
            {
                node.Text = drive.Name + " - (free space: " + drive.AvailableFreeSpace + ")";
                LoadDirectories(node, drive.Name);
            }
            else
                node.Text = drive.Name + " - (not ready)";
            this.TreeView1.Nodes.Add(node);
        }
    }
    private void LoadDirectories(TreeNode parent, string path)
    {
        System.IO.DirectoryInfo directory = new System.IO.DirectoryInfo(path);
        try
        {
            foreach (System.IO.DirectoryInfo d in directory.GetDirectories())
            {
                TreeNode node = new TreeNode(d.Name, d.FullName);
                parent.ChildNodes.Add(node);
                LoadDirectories(node, d.FullName);
            }
        }
        catch (System.UnauthorizedAccessException e)
        {
            parent.Text += " (Access Denied)";
        }
        catch (System.IO.IOException e)
        {
            parent.Text += " (Unknown Error: " + e.Message + ")";
        }
    }



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