Windows Phone 7 多按钮如何实现共用一个单击事件？? 400 报错

找到答案了：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;

namespace PhoneApp4
{
    public partial class MainPage : PhoneApplicationPage
    {
        // 构造函数
        public MainPage()
        {
            InitializeComponent();
            button1.Click += new RoutedEventHandler(button1_Click_1);
            button2.Click += new RoutedEventHandler(button1_Click_1);
            button3.Click += new RoutedEventHandler(button1_Click_1);
        }

        private void button1_Click_1(object sender, EventArgs e)
        {
            Button btn = sender as Button;

            if (btn.Name == "button1")
            {
                MessageBox.Show("按钮1");
            }
            if (btn.Name == "button2")
            {
                MessageBox.Show("按钮2");
            }
            if (btn.Name == "button3")
            {
                MessageBox.Show("按钮3");
            }
        }
    }
}