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HttpCachePolicy.SetRevalidation Method

Sets the Cache-Control HTTP header to either the must-revalidate or the proxy-revalidate directives based on the supplied enumeration value.

Namespace:  System.Web
Assembly:  System.Web (in System.Web.dll)

public void SetRevalidation(
	HttpCacheRevalidation revalidation


Type: System.Web.HttpCacheRevalidation
The HttpCacheRevalidation enumeration value to set the Cache-Control header to.


revalidation is not one of the enumeration values.

The default, which is equivalent to None, is to send neither directive in a header unless explicitly specified by this method.

SetRevalidation is introduced in the .NET Framework version 3.5. For more information, see .NET Framework Versions and Dependencies.

The following code example demonstrates how to set cache revalidation to AllCaches.


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.