WPF页面切换

XAML

<Window x:Class="WpfApplication1.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 Name="b1" Width="100" Height="20" Click="b1_Click"></Button>
        <Button Name="b2" Width="100" Height="20" Margin="0,50,0,0" Click="b2_Click"></Button>
        <Frame Name="f1" NavigationUIVisibility="Hidden" />
    </Grid>
</Window>

<Window x:Class="WpfApplication1.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>
        <Frame Name="f1" NavigationUIVisibility="Hidden">
            <Frame.Content>
                <Grid>
                    <Button Name="b1" Width="100" Height="20" Click="b1_Click"></Button>
                    <Button Name="b2" Width="100" Height="20" Margin="0,50,0,0" Click="b2_Click"></Button>
                </Grid>
            </Frame.Content>
        </Frame>
    </Grid>
</Window>

CS

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 WpfApplication1
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        Page1 p1;
        Page2 p2;
        public MainWindow()
        {
            InitializeComponent();
            p1 = new Page1();
            p2 = new Page2();
        }

        private void b1_Click(object sender, RoutedEventArgs e)
        {
            //f1.Source = new Uri("Page1.xaml", UriKind.Relative);
            f1.Content = p1;
        }

        private void b2_Click(object sender, RoutedEventArgs e)
        {
            //f1.Source = new Uri("Page2.xaml", UriKind.Relative);
            f1.Content = p2;
        }
    }
}