MemoryCache.Contains(String, String) Method
Definition
Important
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Determines whether a cache entry exists in the cache.
public override bool Contains (string key, string regionName = default);override this.Contains : string * string -> boolPublic Overrides Function Contains (key As String, Optional regionName As String = Nothing) As BooleanParameters
- key
- String
A unique identifier for the cache entry to search for.
- regionName
- String
A named region in the cache to which a cache entry was added. Do not pass a value for this parameter. This parameter is null by default, because the MemoryCache class does not implement regions.
Returns
true if the cache contains a cache entry whose key matches key; otherwise, false.
Exceptions
key is null.
regionName is not null.
Applies to
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