HttpRuntimeSection.EnableKernelOutputCache Property


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Gets or sets a value that indicates whether output caching is enabled.

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

<ConfigurationPropertyAttribute("enableKernelOutputCache", DefaultValue := True)>
Public Property EnableKernelOutputCache As Boolean

Property Value

Type: System.Boolean

true if output caching is enabled; otherwise, false. The default value is true.

In order to cache a response, the following criteria need to be met:

  • Caching must be explicitly enabled by a page directive or by the caching API.

  • Caching must have an expiration policy so that the kernel knows when to discard it.

  • Caching cannot have any variable headers or parameters.

  • The request must not require any authentication.


This property is relevant only when Internet Information Services (IIS) version 6.0 or later is installed.

The following example shows how to use the EnableKernelOutputCache property.

' Get the current EnableKernelOutputCache property value.
Response.Write("EnableKernelOutputCache: " & _
  configSection.EnableKernelOutputCache & "<br>")

' Set the EnableKernelOutputCache property to true.
configSection.EnableKernelOutputCache = True

.NET Framework
Available since 2.0
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