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Asked: 2026-05-11T13:47:18+00:00

I know there should be an easy way to do this but I guess

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I know there should be an easy way to do this but I guess my brain isn’t working today. I need to refresh a page in x number of seconds. I can do that in .NET using the following:

Response.AddHeader('Refresh', '300');

This is fine except I also need to display the number of minutes and seconds until the next refresh.

So I am using the following code in javascript to do this from the client:

<script type='text/javascript''>       //enter refresh time in 'minutes:seconds' Minutes should range from 0 to inifinity. Seconds should range from 0 to 59     var limit='0:30'      if (document.images){         var parselimit=limit.split(':')         parselimit=parselimit[0]*60+parselimit[1]*1     }      function beginrefresh(){         if (!document.images)             return          if (parselimit==1)             window.location.reload()         else{              parselimit-=1             curmin=Math.floor(parselimit/60)             cursec=parselimit%60             if (curmin!=0)                 curtime=curmin+' minutes and '+cursec+' seconds left until page refresh!'             else                 curtime=cursec+' seconds left until page refresh!'              window.status=curtime             setTimeout('beginrefresh()',1000)         }     }      window.onload=beginrefresh;  </script>

This works except for one thing – every time the page is refreshed, the browser (IE) gives the nag message about re-downloading content or something. This will not do. This is a page that users will have open all day and it needs to refresh without user intervention. I suppose I could do away with the message that displays the time till next refresh and just use the ASP.NET line, but if anyone has a better idea, I would really appreciate it.

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1 Answer

  1. Instead of using window.location.reload(), try doing a redirect to the current URL:

    window.location = window.location;

    This way, the browser will not be doing a post back, but a new request to the server. You’ll want to test this in various browsers. I just tested FF 3 & IE8 quickly; both look good.

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