Response.Cache.VaryByParams[] is being ignored?

Hi,

in the codebehind of an .aspx, I am doing the following (in
Page_Load):

int cacheDuration = 10;
TimeSpan cacheSpan = new TimeSpan(0, 0, cacheDuration);
DateTime now = DateTime.Now;
Response.Cache.VaryByParams.IgnoreParams = false;
Response.Cache.VaryByParams["parm1;parm2"] = true;
Response.Cache.SetLastModified(now);
Response.Cache.SetExpires(now.Add(cacheSpan));
Response.Cache.SetMaxAge(cacheSpan);
Response.Cache.SetCacheability(HttpCacheability.Pu blic);
Response.Cache.SetValidUntilExpires(true);

Caching works, but if I add alternating values to URL parameters
(parm1 + parm2) the page will still be refreshed every 10 seconds,
regardless of what the parameters contain.

TIA for any hint on what could be the reason for this.

Regards
DC

I forgot to mention: I am still using Framework 1.1 - for just a
little more time

On Feb 8, 4:21 pm, "DC" <d... (AT) upsize (DOT) de> wrote:

Hi,

in the codebehind of an .aspx, I am doing the following (in
Page_Load):

int cacheDuration = 10;
TimeSpan cacheSpan = new TimeSpan(0, 0, cacheDuration);
DateTime now = DateTime.Now;
Response.Cache.VaryByParams.IgnoreParams = false;
Response.Cache.VaryByParams["parm1;parm2"] = true;
Response.Cache.SetLastModified(now);
Response.Cache.SetExpires(now.Add(cacheSpan));
Response.Cache.SetMaxAge(cacheSpan);
Response.Cache.SetCacheability(HttpCacheability.Pu blic);
Response.Cache.SetValidUntilExpires(true);

Caching works, but if I add alternating values to URL parameters
(parm1 + parm2) the page will still be refreshed every 10 seconds,
regardless of what the parameters contain.

TIA for any hint on what could be the reason for this.

Regards
DC