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WeakEventManager.ListenerList.IsEmpty Property

Gets a value that declares whether this WeakEventManager.ListenerList is empty.

Namespace:  System.Windows
Assembly:  WindowsBase (in WindowsBase.dll)

public bool IsEmpty { get; }

Property Value

Type: System.Boolean
true if the list is empty; otherwise, false.

This method is equivalent to checking whether the Count is zero, and does not check whether any of the references in the list are now stale. If you want to assure that all references are still valid, call Purge just prior to checking the empty status of the list.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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