Barcode Reader and create Folder

using System;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.IO;

namespace MyNetstat
{
	class Program    
	{
		static string ExtractBarcode(BitmapSource frame)
		{
			// here comes your barcode reader
			return DateTime.Now.Ticks.ToString();
		}		
		
		static void SaveFrame(BitmapFrame frame, string rootFolder, string barcode, int frameNumber)
		{
			string path = Path.Combine(rootFolder, barcode);
			if(!Directory.Exists(path))
			{
				Directory.CreateDirectory(path);
			}
			
			PngBitmapEncoder encoder = new PngBitmapEncoder();
			FileStream stream = new FileStream(Path.Combine(path, string.Format("p{0:d7}.png", frameNumber)), FileMode.Create);
			encoder.Interlace = PngInterlaceOption.On;
            encoder.Frames.Add(frame);
            encoder.Save(stream);
		}
		
		public static void Main()
		{
			string FileName = @"d:\temp\multipage.tif";
			string root = @"d:\temp";
			
			Stream imageStreamSource = new FileStream(FileName, FileMode.Open, FileAccess.Read, FileShare.Read);
			TiffBitmapDecoder decoder = new TiffBitmapDecoder(imageStreamSource, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
			
			for(int i=0; i<decoder.Frames.Count; i++)
			{
				string barcode = ExtractBarcode(decoder.Frames[i]);
				if(!string.IsNullOrWhiteSpace(barcode))
				{
					SaveFrame(decoder.Frames[i], root, barcode, i);
				}
			}			
		}
	}
}