public void setCacheHeaders()
{
//set Response Cache (client side)
//context.Response.Cache.SetCacheability(HttpCacheability.Public);
//context.Response.Cache.SetExpires(DateTime.Now.AddMinutes(10));
//context.Response.Cache.SetMaxAge(new TimeSpan(0, 10, 0));
context.Response.Cache.SetLastModified(LastModified_HeaderDate);
}