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ICommand.CanExecute Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Defines the method that determines whether the command can execute in its current state.

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

Syntax

'Declaration
Function CanExecute ( _
    parameter As Object _
) As Boolean

bool CanExecute(
    Object parameter
)

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 nulla null reference (Nothing in Visual Basic).

Return Value

Type: System.Boolean
true if this command can be executed; otherwise, false.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.