1.XAML

<Grid Margin="6">
        <Grid.RowDefinitions>
            <RowDefinition Height="24"/>
            <RowDefinition Height="4"/>
            <RowDefinition Height="24"/>
            <RowDefinition Height="4"/>
            <RowDefinition Height="24"/>
            <RowDefinition Height="4"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <!--命令和命令引數-->
        <TextBlock Text="Name:"  VerticalAlignment="Center" HorizontalAlignment="Left" Grid.Row="0"/>
        <TextBox x:Name="nameTextBox" Margin="60,0,0,0" Grid.Row="0"/>
        <Button Content="New Teacher" Command="New" CommandParameter="Teacher" Grid.Row="2"/>
        <Button Content="New Student" Command="New" CommandParameter="Student" Grid.Row="4"/>
        <ListBox x:Name="listBoxNewItems" Grid.Row="6"/>
    </Grid>
    <!--為窗體新增 CommandBinding-->
    <Window.CommandBindings>
        <CommandBinding Command="New" CanExecute="CommandBinding_CanExecute"              Executed="CommandBinding_Executed"/>
    </Window.CommandBindings>

2.程式碼

public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void CommandBinding_CanExecute(object sender, CanExecuteRoutedEventArgs e)
        {
            if (string.IsNullOrEmpty(this.nameTextBox.Text))
            {
                e.CanExecute = false;
            }
            else
            {
                e.CanExecute = true;
            }
        }

        private void CommandBinding_Executed(object sender, ExecutedRoutedEventArgs e)
        {
            string name = this.nameTextBox.Text;
            if (e.Parameter.ToString() =="Teacher")
            {
                this.listBoxNewItems.Items.Add(string.Format("New Teachter:{0}",name));
            }
            else
            {
                this.listBoxNewItems.Items.Add(string.Format("New Student:{0}", name));
            }
        }
    }

3.執行效果