HttpCachePolicy.SetRevalidation Method (System.Web)

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.NET Framework Class Library

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)

Syntax

Visual Basic

Public Sub SetRevalidation ( _
	revalidation As HttpCacheRevalidation _
)

public void SetRevalidation(
	HttpCacheRevalidation revalidation
)

Visual C++

public:
void SetRevalidation(
	HttpCacheRevalidation revalidation
)

member SetRevalidation : 
        revalidation:HttpCacheRevalidation -> unit

Parameters

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

Exceptions

Exception	Condition
ArgumentOutOfRangeException	revalidation is not one of the enumeration values.

Remarks

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.

Examples

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

Visual Basic


Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches)


Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);

Version Information

.NET Framework

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

Platforms

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.

Reference

HttpCachePolicy Class

System.Web Namespace

HttpCacheRevalidation