Posted By

jink on 05/04/09

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cache

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Last Edited at 05/04/09 10:28am

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ASP.net: Prevent Caching of a Page

/ Published in: ASP

Code snippet prevents caching of the page by setting http header values and a LAST MODIFIED header to prevent google from caching too long. This should go into the page load event.

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//prevent browsers from caching the page.
Response.Cache.SetCacheability(HttpCacheability.NoCache);
 
#region Google cache fix (prevents google from cachine the page too long)
System.IO.FileInfo currentInfo = new System.IO.FileInfo(Request.PhysicalApplicationPath);
System.IO.FileInfo currentDirInfo = new System.IO.FileInfo(Request.PhysicalPath);
 
DateTime modifiedTimeToUse;
if (currentInfo.LastWriteTime > currentDirInfo.LastWriteTime)
	modifiedTimeToUse = currentInfo.LastWriteTime;
else
	modifiedTimeToUse = currentDirInfo.LastWriteTime;
 
Response.AppendHeader("Last-Modified", modifiedTimeToUse.ToString("ddd, dd MMM yyyy hh:mm:ss GMT"));
#endregion