[This topic is pre-release documentation and is subject to change in future releases. Blank topics are included as placeholders.]

Determines whether the IDictionary<(Of TKey, TValue>) contains an element with the specified key.

Namespace: net.esper.compat
Assembly:   NEsper (in NEsper.dll)

Syntax

Visual Basic (Declaration)
Public Function ContainsKey ( _
	key As K _
) As Boolean
C#
public bool ContainsKey (
	K key
)
Visual C++
public:
virtual bool ContainsKey (
	K key
) sealed

Parameters

key
K type parameter of net.esper.compat.LinkedDictionary<(Of K, V>).
The key to locate in the IDictionary<(Of TKey, TValue>).

Return Value

true if the IDictionary<(Of TKey, TValue>) contains an element with the key; otherwise, false.

Exceptions

ExceptionCondition
System.ArgumentNullExceptionkey is null.