Gets a value that indicates that a cache entry has no absolute expiration.
Assembly: System.Runtime.Caching (in System.Runtime.Caching.dll)
A cache entry that is inserted into the cache with the field value set as the expiration value should never expire based on an absolute point in time. However, a cache entry with this setting can be evicted from the cache for other reasons that are determined by a particular cache implementation, such as a change-monitor event eviction caused by memory pressure.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)