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ObjectCache.Contains Method

.NET Framework 4.5

Other Versions

.NET Framework 4

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)

Syntax

C++

public abstract bool Contains(
	string key,
	string regionName
)

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 null.

Return Value

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

Version Information

.NET Framework

Supported in: 4.5, 4

Platforms

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Reference

ObjectCache Class

System.Runtime.Caching Namespace

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