Updated: April 2009
Gets or sets the property.
Assembly: System.Web (in System.Web.dll)
The is a semicolon-delimited set of parameters used to vary the cached output. It allows varying the cached output by GET query string or form POST parameters. For instance, you can vary the user-control output to the cache by specifying the user-control name along with either a query string or a form POST parameter. For more information, see Caching Multiple Versions of User Control Output.
The setting must be defined in either the profile or the @ OutputCache directive of the page using the profile.
The settings are the same ones used by the VaryByParam attribute of the @ OutputCache. Varying by all parameters by setting the value of "*" is not recommended. It can result in cache overflow or a denial of service attack on the Web server.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.