Visual Basic

using System;
using System.IO;
using System.Xml;
using System.Text;

namespace TestApp
{
	public class XmlFileSystemWriter : XmlTextWriter
	{
		public XmlFileSystemWriter(TextWriter w) : base(w)
		{
			
		}

		public XmlFileSystemWriter(string fileName, Encoding encoding) : base(fileName, encoding)
		{			
		}

		public XmlFileSystemWriter(Stream stream, Encoding encoding) : base(stream, encoding)
		{			
		}

		public void WriteFileSystemInfo(DirectoryInfo baseDir)
		{
			// Create the root element - name can be changed as desired
			this.WriteStartElement("fileSystemInfo");
			// begin recursion
			this.WriteDirectory(baseDir);
			// write closing root element 
			this.WriteEndElement();
		}

		private void WriteFile(FileInfo info)
		{
			/*		write file details in following format
			 *		<file>
			 *			<name></name>
			 *			<path></path>
			 * 		</file>
			 */
			this.WriteStartElement("file");
			this.WriteElementString("name",info.Name);
			this.WriteElementString("path",info.FullName);
			this.WriteEndElement();
		}

		private void WriteDirectory(DirectoryInfo info)
		{
			/*		write directory details in following format
			 *		<category>
			 *			<name></name>
			 *			<file/>
			 *			<file/>
			 *			......
			 * 		</category>
			 */
			this.WriteStartElement("category");
			this.WriteElementString("name",info.Name);
			
			foreach(DirectoryInfo subDir in info.GetDirectories())
				WriteDirectory(subDir);

			foreach(FileInfo file in info.GetFiles())
				WriteFile(file);

			this.WriteEndElement();
		}
	}
}

<br />
// from a console application<br />
DirectoryInfo di = new DirectoryInfo("C:\\yourdirectory");<br />
XmlFileSystemWriter w = new XmlFileSystemWriter(Console.Out); // Console.Out is a TextWriter<br />
w.Formatting = Formatting.Indent;<br />
w.WriteFileSystemInfo(di);<br />

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