Used as the slidingExpiration parameter in an Cache.Insert(string, object) or Cache.Add(string, object, CacheDependency, DateTime, TimeSpan, CacheItemPriority, CacheItemRemovedCallback) method call to disable sliding expirations. This field is read-only.
When used, this field sets the slidingExpiration parameter to the TimeSpan.Zero field, which has a constant value of zero. The cached item expires in accordance with the absoluteExpiration parameter associated with the Insert or Add method call.