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PORefresh a web page in ASP.NET automatically and capture the time until the next refresh
 

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    <p>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:</p> <pre><code>Response.AddHeader("Refresh", "300"); </code></pre> <p>This is fine except I also need to display the number of minutes and seconds until the next refresh.</p> <p>So I am using the following code in javascript to do this from the client:</p> <pre><code>&lt;script type="text/javascript""&gt; //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; &lt;/script&gt; </code></pre> <p>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.</p>
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