MemoryCache.Item Property (String)
Gets or sets a value in the cache by using the default indexer property for an instance of the MemoryCache class.
Assembly: System.Runtime.Caching (in System.Runtime.Caching.dll)
When you set this property, the value is inserted into the cache. The expiration policy for the cache entry is set to InfiniteAbsoluteExpiration. If a cache entry with a matching key already exists, its value is updated.
Available since 4.0