<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="CommandEnabling" Height="300" Width="300"
>
<Grid>
<Menu VerticalAlignment="Top">
<MenuItem Header="_Edit">
<MenuItem Command="Redo" />
</MenuItem>
</Menu>
</Grid>
</Window>
//File:Window.xaml.vb
Imports System
Imports System.Collections.Generic
Imports System.Text
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Documents
Imports System.Windows.Input
Imports System.Windows.Media
Imports System.Windows.Media.Imaging
Imports System.Windows.Shapes
Namespace WpfApplication1
Public Partial Class Window1
Inherits System.Windows.Window
Public Sub New()
InitializeComponent()
Dim redoCommandBinding As New CommandBinding(ApplicationCommands.Redo)
AddHandler redoCommandBinding.CanExecute, AddressOf RedoCommandCanExecute
CommandBindings.Add(redoCommandBinding)
End Sub
Private Sub RedoCommandCanExecute(sender As Object, e As CanExecuteRoutedEventArgs)
e.CanExecute = DateTime.Now.Second Mod 2 > 1
End Sub
End Class
End Namespace
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