CanExecuteRoutedEventArgs.Command Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets the command associated with this event.
public:
property System::Windows::Input::ICommand ^ Command { System::Windows::Input::ICommand ^ get(); };public System.Windows.Input.ICommand Command { get; }member this.Command : System.Windows.Input.ICommandPublic ReadOnly Property Command As ICommandProperty Value
The command. Unless the command is a custom command, this is generally a RoutedCommand. There is no default value.
Examples
The following example creates a CanExecuteRoutedEventHandler which handles multiple commands. If the Command property is equal to the Play command and the method IsPlaying returns false, CanExecute is set to true; otherwise, CanExecute is set to false. If the Command property is equal to the Stop command and the method IsPlaying returns true, CanExecute is set to true; otherwise, CanExecute is set to false.
private void CanExecuteDisplayCommand(object sender,
CanExecuteRoutedEventArgs e)
{
RoutedCommand command = e.Command as RoutedCommand;
if (command != null)
{
if (command == MediaCommands.Play)
{
if (!IsPlaying())
{
e.CanExecute = true;
}
else
{
e.CanExecute = false;
}
}
if (command == MediaCommands.Stop)
{
if (IsPlaying())
{
e.CanExecute = true;
}
else
{
e.CanExecute = false;
}
}
}
}
Private Sub CanExecuteDisplayCommand(ByVal sender As Object, ByVal e As CanExecuteRoutedEventArgs)
Dim command As RoutedCommand = TryCast(e.Command, RoutedCommand)
If command IsNot Nothing Then
If command Is MediaCommands.Play Then
If IsPlaying() = False Then
e.CanExecute = True
Else
e.CanExecute = False
End If
End If
If command Is MediaCommands.Stop Then
If IsPlaying() = True Then
e.CanExecute = True
Else
e.CanExecute = False
End If
End If
End If
End Sub
Remarks
For more information on commanding, see the Commanding Overview.
