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MemoryCache::Contains Method
Visual Studio 2010
Determines whether a cache entry exists in the cache.
Assembly: System.Runtime.Caching (in System.Runtime.Caching.dll)
Parameters
- key
- Type: System::String
A unique identifier for the cache entry to search for.
- regionName
- Type: System::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 nullptr by default, because the MemoryCache class does not implement regions.
Return Value
Type: System::Booleantrue if the cache contains a cache entry whose key matches key; otherwise, false.
| Exception | Condition |
|---|---|
| ArgumentNullException | key is nullptr. |
| NotSupportedException | regionName is not nullptr. |
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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