ObjectCache.Contains Method

When overridden in a derived class, checks whether the cache entry already exists in the cache.

Namespace:  System.Runtime.Caching
Assembly:  System.Runtime.Caching (in System.Runtime.Caching.dll)

public abstract bool Contains(
	string key,
	string regionName


Type: System.String

A unique identifier for the cache entry.

Type: System.String

Optional. A named region in the cache where the cache can be found, if regions are implemented. The default value for the optional parameter is null.

Return Value

Type: System.Boolean
true if the cache contains a cache entry with the same key value as key; otherwise, false.

.NET Framework

Supported in: 4.6, 4.5, 4
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