>I have an ASCX, with this directive:
>
> <%@ OutputCache Duration="50000" VaryByParam="ctype"
> VaryByCustom="contentlist" Shared="true" %>
>
> in my Global.asax I have this handler for the varybyCustom
>
> public override string GetVaryByCustomString(HttpContext context, string
> arg) {
> if(arg.ToLower() == "contentlist") {
> string strReturn = "b";// so it's not blank
>
> // Now check
> HttpCookie cookie = context.Request.Cookies["dictionize"];
> if(cookie != null) {
> string tmp = cookie.Value.ToString();
> strReturn += tmp;
> }
> return strReturn;
> }
>
> // Otherwise cache as normal
> return base.GetVaryByCustomString(context, arg);
> }
>
> My querystring has a parameter "ctype" which should generate a different
> version of the ASCX.
> I print the current time in both the Page and the ASCX so that I can
> figure out what's going on (cached or not cached).
> The Control is NOT cached consistently.
> It should cache for 50000 seconds no?
> Whenever I go to the page, a the time on the Page (dynamic) matches the
> time on the control (dynamic the first time it's cached then static after
> that).
> Subsequent requests show that the control is then being cached. (The times
> no longer match).
> Then after a few mins, not 50,000 seconds, the time gets updated again
> telling me that the ASCX was refreshed, as if the cache had been flushed?
>
> What's going on? Why does the new version get generated, it seems like
> it's being generated per SESSION and then just cached for the duration of
> the session.
>
> You can see it in action at http://www.FrancisShanahan.com
> The control is the main part of the page, the timestamp is displayed at
> the top of the middle and the top right of the page.
>
> I even put some debugging code in the Application OnStart to see if
> asp_net was restarting on the server without my knowledge but this is not
> the case.
>
> Can anyone shed some light on this topic? All "Google" resources are just
> throwing up the same very basic how-to articles. Doesn't seem like anyone
> has any experience with this. Thanks,
> -fs
>
>