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CacheEntryUpdateArguments Class

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Provides information about a cache entry that will be removed from the cache.

Namespace: Microsoft.Practices.EnterpriseLibrary.Caching.Runtime.Caching
Assembly: Microsoft.Practices.EnterpriseLibrary.Caching.Silverlight (in Microsoft.Practices.EnterpriseLibrary.Caching.Silverlight.dll) Version: 5.0.505.0

Syntax

public class CacheEntryUpdateArguments

'Declaration
Public Class CacheEntryUpdateArguments

public ref class CacheEntryUpdateArguments

Remarks

The arguments in the CacheEntryUpdateArguments class contain details about an entry that the cache implementation is about to remove. The arguments include a key to the cache entry, a reference to the ObjectCache instance that the entry will be removed from, a reason for the removal, and the region name in the cache that contains the entry. The constructor of the CacheEntryUpdateArguments class uses these arguments to create a new instance of the class. A CacheEntryUpdateArguments object is passed to a CacheEntryUpdateCallback handler, which notifies the cache about the entry to remove.

Notes to Implementers. A callback handler must notify the cache implementation whether to insert a replacement entry into the cache in place of the cache entry that is about to be removed. If you want to exchange cache entries, you must assign a value other than null to the UpdatedCacheItem property. Cache implementations will interpret a null value for the UpdatedCacheItem property as a notice that the current cache entry should be removed but not replaced.

Inheritance Hierarchy

System.Object
  Microsoft.Practices.EnterpriseLibrary.Caching.Runtime.Caching.CacheEntryUpdateArguments

See Also

CacheEntryUpdateArguments Members

Microsoft.Practices.EnterpriseLibrary.Caching.Runtime.Caching Namespace