IRegion(TKey, TValue).ContainsKey Method

IRegionTKey, TValueContainsKey Method

Determines whether the IDictionary contains an element with the specified key.

Namespace: GemStone.GemFire.Cache.Generic
Assembly: Gemstone.Gemfire.Cache (in Gemstone.Gemfire.Cache.dll) Version: 9.0.6.18

Syntax

C++

Copy

bool ContainsKey(
	TKey key
)

Function ContainsKey ( 
	key As TKey
) As Boolean

bool ContainsKey(
	TKey key
)

abstract ContainsKey : 
        key : 'TKey -> bool

Parameters

key: Type: TKey
The key to locate in the IDictionary.

Return Value

Type: Boolean
true if the IDictionary contains an element with the key; otherwise, false.

Implements

IDictionaryTKey, TValueContainsKey(TKey)

Exceptions

Exception	Condition
ArgumentNullException	key is a null reference

Remarks

For local region instance - This only searches in the local cache. For distributed region instance - checks to see if the key is present on the server.

Reference

IRegionTKey, TValue Interface

GemStone.GemFire.Cache.Generic Namespace