<Window x:Class="Commands.TwoDocument" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="TwoDocument" Height="300" Width="300"> <Window.Resources> <CommandBinding x:Key="binding" Command="ApplicationCommands.Save" Executed="SaveCommand" CanExecute="SaveCommand_CanExecute" /> </Window.Resources> <Grid> <Grid.RowDefinitions> <RowDefinition Height="Auto"></RowDefinition> <RowDefinition Height="Auto"></RowDefinition> <RowDefinition></RowDefinition> <RowDefinition></RowDefinition> </Grid.RowDefinitions> <Menu Grid.Row="0"> <MenuItem Header="File"> <MenuItem Command="New"></MenuItem> <MenuItem Command="Open"></MenuItem> <MenuItem Command="Save"></MenuItem> <MenuItem Command="SaveAs"></MenuItem> <Separator></Separator> <MenuItem Command="Close"></MenuItem> </MenuItem> </Menu> <TextBox Margin="5" Grid.Row="2" TextWrapping="Wrap" AcceptsReturn="True" TextChanged="txt_TextChanged"> <TextBox.CommandBindings> <StaticResource ResourceKey="binding"></StaticResource> </TextBox.CommandBindings> </TextBox> </Grid> </Window> //File:Window.xaml.cs using System; using System.Collections.Generic; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; namespace Commands { public partial class TwoDocument : System.Windows.Window { public TwoDocument() { InitializeComponent(); } private void SaveCommand(object sender, ExecutedRoutedEventArgs e) { } private void txt_TextChanged(object sender, RoutedEventArgs e) { } private void SaveCommand_CanExecute(object sender, CanExecuteRoutedEventArgs e) { e.CanExecute = false; } } }