wpf 命令参数（CommandParameter）的使用_wpf commandparameter

<Window x:Class="WpfApp03.TestWin07"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp03"
        mc:Ignorable="d"
        Title="TestWin07" Height="450" Width="800">
    <Grid Margin="6">
        <Grid.RowDefinitions>
            <RowDefinition Height="24"></RowDefinition>
            <RowDefinition Height="4"></RowDefinition>
            <RowDefinition Height="24"></RowDefinition>
            <RowDefinition Height="4"></RowDefinition>
            <RowDefinition Height="24"></RowDefinition>
            <RowDefinition Height="4"></RowDefinition>
            <RowDefinition Height="*"></RowDefinition>
        </Grid.RowDefinitions>
        <TextBlock Text="Name:" VerticalAlignment="Center" HorizontalAlignment="Left"/>
        <TextBox x:Name="txtName" Margin="60,0,0,0"/>
 
        <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="lstNewItems" Grid.Row="6"/>
    </Grid>
    <Window.CommandBindings>
        <CommandBinding x:Name="New" Command="New" CanExecute="New_CanExecute" Executed="New_Executed"/>
    </Window.CommandBindings>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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 WpfApp03
{
    /// <summary>
    /// TestWin07.xaml 的交互逻辑
    /// </summary>
    public partial class TestWin07 : Window
    {
        public TestWin07()
        {
            InitializeComponent();
        }
 
        private void New_CanExecute(object sender, CanExecuteRoutedEventArgs e)
        {
            if (string.IsNullOrEmpty(txtName.Text))
            {
                e.CanExecute = false;
            }
            else
            {
                e.CanExecute = true;
            }
        }
 
        private void New_Executed(object sender, ExecutedRoutedEventArgs e)
        {
            string name = txtName.Text;
            if (e.Parameter.ToString()=="Teacher")
            {
                lstNewItems.Items.Add(string.Format("New Teacher:{0},学而不厌，诲人不倦", name));
            }
            else if (e.Parameter.ToString()=="Student")
            {
                lstNewItems.Items.Add(string.Format("New Student:{0},好好学习，天天向上", name));
            }
        }
    }
}