PartialCachingAttribute Constructor (Int32, String, String, String)
Initializes a new instance of the PartialCachingAttribute class, specifying the caching duration, any GET and POST values, control names, and custom output caching requirements used to vary the cache.
Assembly: System.Web (in System.Web.dll)
public: PartialCachingAttribute( int duration, String^ varyByParams, String^ varyByControls, String^ varyByCustom )
Parameters
- duration
- Type: System::Int32
The amount of time, in seconds, that the user control is cached.
- varyByParams
- Type: System::String
A semicolon-separated list of strings used to vary the output cache. By default, these strings correspond to a query string value sent with GET method attributes or to a parameter sent using the POST method. When this attribute is set to multiple parameters, the output cache contains a different version of the requested document for each specified parameter. Possible values include "none", "*", and any valid query string or POST parameter name.
- varyByControls
- Type: System::String
A semicolon-separated list of strings used to vary the output cache. These strings represent fully qualified names of properties on a user control. When this parameter is used for a user control, the user control output is varied to the cache for each specified user control property.
- varyByCustom
- Type: System::String
Any text that represents custom output caching requirements. If this parameter is given a value of "browser", the cache is varied by browser name and major version information. If a custom string is entered, you must override the HttpApplication::GetVaryByCustomString method in your application's Global.asax file.
The following code example demonstrates how the PartialCachingAttribute(Int32, String, String, String) constructor can be applied to a user control. In the example, the constructor is used to indicate that the user control can be cached, specify the caching duration as 20 seconds, and specify a control named state for which the user control output will be varied.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.