OutputCacheParameters.VaryByCustom Property
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Gets a list of custom strings that the output cache uses to vary the cache entry.
Namespace: System.Web.UI
Assembly: System.Web (in System.Web.dll)
If you specify "browser" for this property, the cache entry will be varied by browser type and major version number. If a custom string is entered, you must override the HttpApplication.GetVaryByCustomString method in your application's Global.asax file.
Windows 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.