ICommand.CanExecuteChanged Event

Occurs when changes occur which affect whether or not the command should execute.

Namespace: System.Windows.Input
Assembly: PresentationCore (in presentationcore.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

event EventHandler CanExecuteChanged
/** @event */
void add_CanExecuteChanged (EventHandler value)

/** @event */
void remove_CanExecuteChanged (EventHandler value)

In JScript, you can handle the events defined by a class, but you cannot define your own.
You cannot use this event in XAML.

Normally, a command source will call CanExecute on the command when this event occurs.

Normally, if the command cannot execute, the command source will disable itself.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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