CacheKeyDependency Property

XmlDataSource.CacheKeyDependency Property

Gets or sets a user-defined key dependency that is linked to all data cache objects created by the data source control. All cache objects explicitly expire when the key expires.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

public virtual string CacheKeyDependency { get; set; }
/** @property */
public String get_CacheKeyDependency ()

/** @property */
public void set_CacheKeyDependency (String value)

public function get CacheKeyDependency () : String

public function set CacheKeyDependency (value : String)

Not applicable.

Property Value

A key that identifies all cache objects created by the XmlDataSource control.

The XmlDataSource control supports data caching. While data is cached, the XmlDataSource retrieves data from the cache rather than from the underlying data file. When the cache expires, it retrieves data from the underlying file and re-caches the data.

You can set the CacheKeyDependency property to create a dependency between all cache entries created by the SqlDataSource control and the key. You can programmatically invalidate all the cache entries at any time by expiring the key.

Because of the properties used to create the CacheKeyDependency, it is possible that multiple XmlDataSource controls can use the same cache in scenarios where they load the same data from the same XML file and transform file and have the same CacheDuration and CacheExpirationPolicy set.

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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