OutputCacheProfile.VaryByHeader Property


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Gets or sets the VaryByHeader property.

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

public string VaryByHeader { get; set; }

Property Value

Type: System.String

The VaryByHeader value.

The VaryByHeader is a semicolon-delimited set of headers used to vary the cached output. These are HTTP headers associated with the request. For more information, see Caching Multiple Versions of a Page.


The VaryByHeader settings are the same ones used by the VaryByHeader attribute of the . Varying by all headers by setting the value of "*" is not recommended. It can result in cache overflow or a denial of service attack on the Web server.

The following code example shows how to use the VaryByHeader property.

// Get the current VaryByHeader.
String varyByHeaderValue = 

// Set the VaryByHeader.
outputCacheProfile.VaryByHeader = 

.NET Framework
Available since 2.0
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