Specifies the reason an item was removed from the Cache.
Assembly: System.Web (in System.Web.dll)
|The item is removed from the cache by a Remove method call or by an Insert method call that specified the same key.|
|The item is removed from the cache because it expired.|
|The item is removed from the cache because the system removed it to free memory.|
|The item is removed from the cache because the cache dependency associated with it changed.|
The following code example demonstrates a shared Boolean property, itemRemoved, a shared enumeration object, reason, and a CacheItemRemovedCallback delegate, onRemove. The latter can be included in an Insert or Add method call. It also defines a method, RemovedCallback, with a signature that matches the CacheItemRemovedCallback delegate. When the RemovedCallback method is called, it changes the itemRemoved property value to true and assigns the reason property value to the reason provided by the enumeration.
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