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Page.InitOutputCache Method (Int32, String, String, OutputCacheLocation, String)

This method supports the .NET Framework infrastructure and is not intended to be used directly from your code.
Initializes the output cache for the current page request.

Namespace: System.Web.UI
Assembly: System.Web (in system.web.dll)

protected virtual void InitOutputCache (
	int duration,
	string varyByHeader,
	string varyByCustom,
	OutputCacheLocation location,
	string varyByParam
protected void InitOutputCache (
	int duration, 
	String varyByHeader, 
	String varyByCustom, 
	OutputCacheLocation location, 
	String varyByParam
protected function InitOutputCache (
	duration : int, 
	varyByHeader : String, 
	varyByCustom : String, 
	location : OutputCacheLocation, 
	varyByParam : String
Not applicable.



The amount of time that objects stored in the output cache are valid.


A semicolon-separated list of headers that content from the output cache will vary by.


The Vary HTTP header.


One of the OutputCacheLocation values.


A semicolon-separated list of parameters, received by a GET or POST method, that content from the output cache will vary by.

Exception typeCondition


An invalid value is specified for the output cache location.

You should not call this method. To enable and manipulate output caching for a page, use either the @ OutputCache directive in the .aspx file, or the methods and properties of the HttpCachePolicy class. The latter are accessible through Response.Cache syntax in the page's code declaration block or code-behind file. For more information, see Caching ASP.NET Pages.

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0