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ReadOnlyDictionary<K, V>.ContainsKey Method

  • Article

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

Namespace:  Microsoft.Rtc.Collaboration.AudioVideo
Assembly:  Microsoft.Rtc.Collaboration (in Microsoft.Rtc.Collaboration.dll)

Syntax

'Declaration
Public Function ContainsKey ( _
    key As K _
) As Boolean
'Usage
Dim instance As ReadOnlyDictionary
Dim key As K
Dim returnValue As Boolean

returnValue = instance.ContainsKey(key)

public bool ContainsKey(
    K key
)

Parameters

  • key
    Type: K
    The key to locate in the ReadOnlyDictionary.

Return Value

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

Implements

IDictionary<TKey, TValue>.ContainsKey(TKey)

Exceptions

Exception Condition
ArgumentNullException

Thrown when key is null.

See Also

Reference

ReadOnlyDictionary<K, V> Class

ReadOnlyDictionary<K, V> Members

Microsoft.Rtc.Collaboration.AudioVideo Namespace