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HttpCachePolicy.SetOmitVaryStar Method

Specifies whether the response should contain the vary:* header when varying by parameters.

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

'Declaration
Public Sub SetOmitVaryStar ( _
	omit As Boolean _
)

Parameters

omit
Type: System.Boolean

true to direct the HttpCachePolicy to not use the * value for its VaryByHeaders property; otherwise, false.

This method allows you to prevent the output ached from adding a vary:* header to the outgoing response when the cached response varies by parameter. This is useful for clients varying caching by query string because most clients will automatically vary by query string without requiring the vary:* header.

NoteNote

The use of the vary:* header can disable all client caching.

This is a convenience method to affect the VaryByHeaders property. Passing true to the method directs the HttpCachePolicy to ignore the * value for the VaryByHeaders property.

SetOmitVaryStar is introduced in the .NET Framework version 3.5. For more information, see .NET Framework Versions and Dependencies.

.NET Framework

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

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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