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public class NoCacheGlobalActionFilter : ActionFilterAttribute
{
    public override void OnResultExecuting(ResultExecutingContext filterContext)
    {
        //IE: http://support.microsoft.com/kb/316431
        if (!(filterContext.Result is FileResult))
        {
            HttpCachePolicyBase cache = filterContext.HttpContext.Response.Cache;
            cache.SetCacheability(HttpCacheability.NoCache);
        }

        base.OnResultExecuting(filterContext);
    }
}