WPF4/MainWindow.xaml.cs

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 WpfApp2
{
    /// <summary>
    /// Логика взаимодействия для MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void NavigateToPage1(object sender, RoutedEventArgs e)
        {
           
        }

        private void NavigateToPage2(object sender, RoutedEventArgs e)
        {
            
            MessageBox.Show("Переход на страницу 'Клиенты'");
        }

        private void NavigateToPage3(object sender, RoutedEventArgs e)
        {
            
            MessageBox.Show("Переход на страницу 'Договора'");
        }

        private void NavigateToPage4(object sender, RoutedEventArgs e)
        {
            
            MessageBox.Show("Переход на страницу 'Ценные бумаги'");
        }

        private void NavigateToPage5(object sender, RoutedEventArgs e)
        {
            
            MessageBox.Show("Переход на страницу 'Сделки'");
        }

        private void NavigateToPage6(object sender, RoutedEventArgs e)
        {
            
            MessageBox.Show("Переход на страницу 'Справка'");
        }

        private void Hyperlink_Click(object sender, RoutedEventArgs e)
        {
            mainFrame.Content = new Page1();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {

        }

        private void ExitApplication(object sender, RoutedEventArgs e)
        {
            Application.Current.Shutdown();
        }
    }
}