87 lines
3.3 KiB
HTML
87 lines
3.3 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<HTML>
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<HEAD>
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<META HTTP-EQUIV="Content-Type" Content="text/html; charset=Windows-1252">
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<TITLE>Expires</TITLE>
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<SCRIPT LANGUAGE="JavaScript">
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<!--
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TempString = navigator.appVersion
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if (navigator.appName == "Microsoft Internet Explorer"){
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// Check to see if browser is Microsoft
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if (TempString.indexOf ("4.") >= 0){
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// Check to see if it is IE 4
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document.writeln('<link rel="stylesheet" type="text/css" href="/iishelp/common/coua.css">');
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}
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else {
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document.writeln('<link rel="stylesheet" type="text/css" href="/iishelp/common/cocss.css">');
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}
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}
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else if (navigator.appName == "Netscape") {
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// Check to see if browser is Netscape
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document.writeln('<link rel="stylesheet" type="text/css" href="/iishelp/common/coua.css">');
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}
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else
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document.writeln('<link rel="stylesheet" type="text/css" href="/iishelp/common/cocss.css">');
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//-->
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</script>
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<SCRIPT LANGUAGE="VBScript">
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<!--
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Sub Window_OnLoad()
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Dim frmContents
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On Error Resume Next
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If Not Parent Is Nothing Then
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Set frmContents = Parent.Contents
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If Not frmContents Is Nothing Then
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frmContents.Window.TOCSynch_Click
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End If
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End If
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End Sub
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//--></SCRIPT><META NAME="DESCRIPTION" CONTENT="Internet Information Services reference information">
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<META HTTP-EQUIV="PICS-Label" CONTENT='(PICS-1.1 "<http://www.rsac.org/ratingsv01.html>" l comment "RSACi North America Server" by "inet@microsoft.com <mailto:inet@microsoft.com>" r (n 0 s 0 v 0 l 0))'>
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<META NAME="MS.LOCALE" CONTENT="EN-US">
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<META NAME="MS-IT-LOC" Content="Internet Information Services">
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</HEAD>
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<BODY BGCOLOR="#FFFFFF" TEXT="#000000">
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<H4><A NAME="_expires"></A><SUP></SUP>Expires</H4>
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<P>The <B>Expires</B> property specifies the length of time before a page cached on a browser expires. If the user returns to the same page before it expires, the cached version is displayed.</P>
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<H6>Syntax</H6>
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<P><B>Response.Expires </B>[<B>=</B> <I>number</I>]</P>
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<P> </P>
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<H6>Parameters</H6>
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<DL>
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<DT><I>number</I></DT>
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<DD>The time in minutes before the page expires.</DD>
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</DL>
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<H6>Remarks</H6>
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<P>When your .asp file calls <B>Response.Expires</B>, IIS creates an HTTP header indicating the time on the server. If the system time on the client is earlier than the system time on the server (due to either the client or server having an inaccurate time setting, or time-zone differences) setting the parameter to 0 will not have the effect of expiring the page immediately. You can use the <B>Response.ExpiresAbsolute</B> property to achieve immediate expiration of a page. In addition, you can use a negative number for the <B>Expires</B> property. For example</P>
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<PRE><CODE><%Response.Expires = -1 %>
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</CODE></PRE>
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<P>will expire the response immediately.</P>
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<P>If there are multiple calls to <B>Response.Expires</B> on a single page, the server will use the shortest time period.</P>
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<H6>Applies To</H6>
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<P><A HREF="/iishelp/iis/htm/asp/vbob5sj8.htm"><B>Response</B> Object</A></P>
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<H6>See Also</H6>
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<P><A HREF="/iishelp/iis/htm/asp/vbob1qzp.htm"><B>ExpiresAbsolute</B></A></P>
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<hr class="iis" size="1">
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<p align="center"><em><a href="../../../common/colegal.htm">© 1997-2001 Microsoft Corporation. All rights reserved.</a></em></p>
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</BODY>
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</HTML>
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