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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:
virtual bool Contains(
	String^ key, 
	String^ regionName
) abstract

Parameters

key
Type: System::String
A unique identifier for the cache entry.
regionName
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 nullptr.

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

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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