ObjectCache.CreateCacheEntryChangeMonitor(IEnumerable<String>, String) Method


When overridden in a derived class, creates a CacheEntryChangeMonitor object that can trigger events in response to changes to specified cache entries.

public abstract System.Runtime.Caching.CacheEntryChangeMonitor CreateCacheEntryChangeMonitor (System.Collections.Generic.IEnumerable<string> keys, string regionName = default);
abstract member CreateCacheEntryChangeMonitor : seq<string> * string -> System.Runtime.Caching.CacheEntryChangeMonitor
Public MustOverride Function CreateCacheEntryChangeMonitor (keys As IEnumerable(Of String), Optional regionName As String = null) As CacheEntryChangeMonitor



The unique identifiers for cache entries to monitor.


Optional. A named region in the cache where the cache keys in the keys parameter exist, if regions are implemented. The default value for the optional parameter is null.



A change monitor that monitors cache entries in the cache.


When a derived ObjectCache class overrides the base CreateCacheEntryChangeMonitor method, the cache implementation must create a CacheEntryChangeMonitor object. This specialized change monitor notifies callers when there are changes to the cache entries that are specified in the keys parameter. For example, if a monitored item in the keys parameter is updated or removed from the cache, the change monitor created by this method triggers an event.

If a cache implementation supports named cache regions, a string value can be specified as the regionName parameter. Otherwise, the parameter defaults to null.


Not all cache implementations support cache-entry change monitors. To determine whether your cache implementation supports CacheEntryChangeMonitor objects, see the documentation for the specific cache implementation.

Applies to