ContainsKey Method (ReadOnlyKeyedObservableCollection<TItem,TKey>)

Indicates if an item with the specified key exists within the collection.

Syntax

Visual Basic

'Declaration
 
Public Function ContainsKey( _
   ByVal key As TKey _
) As Boolean

C#

public bool ContainsKey( 
   TKey key
)

Parameters

key

The key to evaluate

Return Value

True if the collection contains an item with the specified key; otherwise false.

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2