BCR.ImageCache.ClearThumbnailsCache C# (CSharp) Method

        public void ClearThumbnailsCache()
        {
            DirectoryInfo d = new DirectoryInfo(thumbnail_folder);

              FileInfo[] fis = d.GetFiles();

              foreach (FileInfo fi in fis)
              {
            File.Delete(fi.FullName);
              }
        }