WPF_Practice/PacticeSolution/PageSample/MainWindow.xaml.cs

using PageSample.SubPage;
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.Navigation;
using System.Windows.Shapes;

namespace PageSample
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private Page1 _p1;
        private Page2 _p2;

        public MainWindow()
        {
            InitializeComponent();

            _p1 = new Page1();
            _p2 = new Page2();
        }

        private void btnPage1_Click(object sender, RoutedEventArgs e)
        {
            frmMain.Content = _p1;
        }

        private void btnPage2_Click(object sender, RoutedEventArgs e)
        {
            frmMain.Content = _p2;
        }
    }
}