Separate Product Images in subfolders

A large amount of images in the same folder can have a negative impact in the global performance of the system.

You know that read or load a folder with thousand of files  sometimes is impossible.

I solved adding this small code into ProductManager.cs


  public static string GetImagePath(int IdDoc, string ImageRootPath)
        {

            try
            {
                double subdir1 = 0;
                double subdir2 = 0;
                string dir1 = null;
                string dir2 = null;
                int val = 0;

                subdir1 = IdDoc / 65536;
                val = Convert.ToInt32(subdir1);
                dir1 = val.ToString("000");

                //calcolo subdir2
                subdir2 = IdDoc / 256;
                while (subdir2 >= 256)
                {
                    subdir2 = subdir2 - 256;
                }

                val = Convert.ToInt32(subdir2);
                dir2 = val.ToString("000");

                return ImageRootPath + "\\" + dir1 + "\\" + dir2 + "\\";
            }
            catch (Exception ex)
            {
                return "ERROR : " + ex.Message;
            }


The logic of this function is the same logic of the Document Management Systems,
256 folders for each folder and 256 images for each folder.
All this for 3 levels (256x256x256)