private void ClearInternetCacheFolder()
        {

            ClearFolder(new DirectoryInfo(Environment.GetFolderPath(Environment.SpecialFolder.InternetCache)));

           
        }

        private void ClearFolder(DirectoryInfo directoryInfo)
        {
            foreach (FileInfo file in directoryInfo.GetFiles())
            { 
                file.Delete();
            }
            foreach (DirectoryInfo subfolder in directoryInfo.GetDirectories())
            { 
                ClearFolder(subfolder); 
            }

        }