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Provides an application-wide implementation of the VaryByCustom property.
Namespace: System.Web
Assembly: System.Web (in System.Web.dll)
Public Overridable Function GetVaryByCustomString ( _ context As HttpContext, _ custom As String _ ) As String
public virtual string GetVaryByCustomString( HttpContext context, string custom )
public: virtual String^ GetVaryByCustomString( HttpContext^ context, String^ custom )
abstract GetVaryByCustomString : context:HttpContext * custom:string -> string override GetVaryByCustomString : context:HttpContext * custom:string -> string
Parameters
- context
- Type: System.Web.HttpContext
An HttpContext object that contains information about the current Web request.
- custom
- Type: System.String
The custom string that specifies which cached response is used to respond to the current request.
Return Value
Type: System.StringIf the value of the custom parameter is "browser", the browser's Type; otherwise, null.
You can override GetVaryByCustomString to add a new method for calculating custom vary-by values that are based on the current request. The implementation has to call the base class for custom values that it does not recognize. For more information, see How to: Cache Versions of a Page Using Custom Strings.
.NET Framework
Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0Windows 8 Release Preview, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 SP2, 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.