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Defines the method that determines whether the command can execute in its current state.
Parameters parameter Type: System .Object
Data used by the command. If the command does not require data to be passed, this object can be set to
. null Return Value
System .Boolean if this command can be executed; otherwise, true . false
Typically, a command source calls the
method when the CanExecute event is raised. CanExecuteChanged .NET Framework
Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0
.NET Framework Client Profile
Supported in: 4, 3.5 SP1
Portable Class Library
Supported in: Portable Class Library
.NET for Windows Store apps
Supported in: Windows 8
.NET for Windows Phone apps
Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1
Windows Phone 8.1, Windows Phone 8, 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.