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PartialCachingAttribute.VaryByParams Property

Gets a list of query string or form POST parameters that the output cache will use to vary the user control.

Namespace:  System.Web.UI
Assembly:  System.Web (in System.Web.dll)

public string VaryByParams { get; set; }

Property Value

Type: System.String
The list of query string or form POST parameters.

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 and to specify the parameter upon which the cache entry is dependent.


// Set the PartialCachingAttribute.Duration property to
// 20 seconds and the PartialCachingAttribute.VaryByParams
// property to ctlSelect.country, the full name of the form 
// POST parameter generated by the country DropDownList control.
[PartialCaching(20, "ctlSelect.country", null, null)]
public partial class ctlSelect : UserControl


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

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.

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