private void SetFileCaching(HttpResponseBase response, string fileName)
{
response.AddFileDependency(fileName);
response.Cache.SetETagFromFileDependencies();
response.Cache.SetLastModifiedFromFileDependencies();
response.Cache.SetCacheability(HttpCacheability.Public);
response.Cache.SetMaxAge(new TimeSpan(7, 0, 0, 0));
response.Cache.SetSlidingExpiration(true);
}