Manipulating the Page Output Cache Programmatically
If you need more control over how ASP.NET Framework caches pages, then you can work directly with the HttpCachePolicy class. This class is exposed by the Response.Cache property.
The HttpCachePolicy class includes properties and methods that enable you to perform programmatically all the tasks that you can perform with the <%@ OutputCache %> directive. You also can use the methods of this class to manipulate the HTTP cache headers that are sent to proxy servers and browsers.
This class supports the following properties:
• VaryByHeaders—
Gets the list of headers that are used to vary cache output.
• VaryByParams—
Gets the list of query string and form parameters used to vary cache output.
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