HttpRuntimeSection.EnableKernelOutputCache Property

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

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

public bool EnableKernelOutputCache { get; set; }
/** @property */
public boolean get_EnableKernelOutputCache ()

/** @property */
public void set_EnableKernelOutputCache (boolean value)

public function get EnableKernelOutputCache () : boolean

public function set EnableKernelOutputCache (value : boolean)

Not applicable.

Property Value

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;

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