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HttpCachePolicy.SetVaryByCustom(String) Method

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Definition

Namespace:
System.Web
Assembly:
System.Web.dll

Specifies a custom text string to vary cached output responses by.

public:
 void SetVaryByCustom(System::String ^ custom);
public void SetVaryByCustom (string custom);
member this.SetVaryByCustom : string -> unit
Public Sub SetVaryByCustom (custom As String)

Parameters

custom
String

The text string to vary cached output by.

Exceptions

ArgumentNullException

custom is null.

InvalidOperationException

The SetVaryByCustom(String) method has already been called.

Examples

The following code example demonstrates how to set the custom vary string to "Accept-Charset", which causes the origin-server's cache to choose one of several cached responses depending on the browser's Accept-Charset header.

Response.Cache.SetVaryByCustom("Accept-Charset");

Response.Cache.SetVaryByCustom("Accept-Charset")

Remarks

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

Applies to