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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
)

Parameters

revalidation
Type: System.Web.HttpCacheRevalidation

The HttpCacheRevalidation enumeration value to set the Cache-Control header to.

ExceptionCondition
ArgumentOutOfRangeException

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.

Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
    

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
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