System.Web Namespace   HttpCachePolicy Class

---

Specifies whether the ASP.NET cache should ignore HTTP Cache-Control headers sent by the client that invalidate the cache.

[ VB ]
Public Sub SetValidUntilExpires ( _
   ByVal validUntilExpires As Boolean _
)

[ C# ]
public void SetValidUntilExpires (
   bool validUntilExpires
);

[ C++ ]
public: void SetValidUntilExpires (
   bool validUntilExpires
);

[ JScript ]
public function SetValidUntilExpires (
   validUntilExpires : Boolean
);

validUntilExpires

true if the cache ignores Cache-Control invalidation headers; otherwise, false.

SetValidUntilExpires is set to true automatically when the high-level <%@ OutputCache ... %> page directive is used.

This method is provided because some browsers, when refreshing a page view, send HTTP cach invalidation headers to the Web server and evict the page from the cache. When SetValidUntilExpires is set to true, ASP.NET ignores cache invalidation headers and the page remains in the cache until it expires.

HttpCachePolicy Members   Caching ASP.NET Pages