wdf按钮点击后，旁边浮现新按钮？

新手刚刚上路，找不到类似的教材。在wpf中，点击一个按钮，旁边出现多个按钮，怎么写啊

<Window x:Class="Q1078398.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">
    <Grid>
        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="10,10,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="100,10,0,0" Name="button2" VerticalAlignment="Top" Width="75" Visibility="Hidden" />
        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="181,10,0,0" Name="button3" VerticalAlignment="Top" Width="75" Visibility="Hidden" />
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
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.Navigation;
using System.Windows.Shapes;

namespace Q1078398
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            button2.Visibility = button2.Visibility == System.Windows.Visibility.Visible ? System.Windows.Visibility.Hidden : System.Windows.Visibility.Visible;
            button3.Visibility = button3.Visibility == System.Windows.Visibility.Visible ? System.Windows.Visibility.Hidden : System.Windows.Visibility.Visible;
        }
    }
}