As new in asp.net. In my asp.net application in membership in log off
on click event
using function ClearSession()
, but problem arises after log off if i click back button on browser it is forwarding to the cached page. How to clear cache in browser so a user could not view its profile if he is not login
protected void ClearSession()
{
FormsAuthentication.SignOut();
Session.Clear();
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ExpiresAbsolute = DateTime.UtcNow.AddDays(-1d);
Response.Expires = -1500;
Response.CacheControl = "no-Cache";
}
Make sure to only select the Cached data and files box to avoid clearing important information. You can also access the menu by using the shortcut: CTRL + SHIFT + DEL. Then, click the Clear button at the bottom.
Caching is a technique of storing frequently used data/information in memory, so that, when the same data/information is needed next time, it could be directly retrieved from the memory instead of being generated by the application.
I think you are almost there. You need more HTML headers to support all browsers. According to this article on SO these are the ones that work on all browsers:
Cache-Control: no-cache, no-store, must-revalidate
Pragma: no-cache
Expires: 0
The full code for this is:
HttpContext.Current.Response.AddHeader("Cache-Control", "no-cache, no-store, must-revalidate");
HttpContext.Current.Response.AddHeader("Pragma", "no-cache");
HttpContext.Current.Response.AddHeader("Expires", "0");
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