WPF(命令参数）

<Window x:Class="TestOfCommandParameter.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525"
        Background="LightBlue" WindowStyle="ToolWindow">
    <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>
        
        <TextBlock Text="Name:" VerticalAlignment="Center" HorizontalAlignment="Left" Grid.Row="0" />
        <TextBox x:Name="newTextBox" 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>
    
    <Window.CommandBindings>
        <CommandBinding Command="New" CanExecute="New_CanExecute"
                        Executed="New_Executed" />
    </Window.CommandBindings>
</Window>

using System.Windows;

namespace TestOfCommandParameter
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void New_CanExecute(object sender, System.Windows.Input.CanExecuteRoutedEventArgs e)
        {
            if (string.IsNullOrEmpty(this.newTextBox.Text))
            {
                e.CanExecute = false;
            } else
            {
                e.CanExecute = true;
            }
        }

        private void New_Executed(object sender, System.Windows.Input.ExecutedRoutedEventArgs e)
        {
            string name = this.newTextBox.Text;
            if (e.Parameter.ToString()=="Teacher")
            {
                this.listBoxNewItems.Items.Add(string.Format("New Teacher:{0},学而不厌，诲人不倦。", name));
            }

            if (e.Parameter.ToString() == "Student")
            {
                this.listBoxNewItems.Items.Add(string.Format("New Student:{0},好好学习，天天向上。", name));
            }
        }
    }
}