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ConcurrentDictionary<TKey, TValue>::IDictionary::Contains Method (Object^)

.NET Framework (current version)
 

Gets whether the System.Collections.Generic::IDictionary<TKey, TValue> contains an element with the specified key.

Namespace:   System.Collections.Concurrent
Assembly:  mscorlib (in mscorlib.dll)

private:
virtual bool Contains(
	Object^ key
) sealed = IDictionary::Contains

Parameters

key
Type: System::Object^

The key to locate in the System.Collections.Generic::IDictionary<TKey, TValue>.

Return Value

Type: System::Boolean

true if the System.Collections.Generic::IDictionary<TKey, TValue> contains an element with the specified key; otherwise, false.

Exception Condition
ArgumentNullException

key is null.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
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