CheckMemoryLeak/SecondPage.xaml.cs

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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238

namespace CheckMemoryLeak
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class SecondPage : Page
    {
        public SecondPage()
        {
            this.InitializeComponent();
            this.DataContext = new SecondViewModel();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            this.Frame.GoBack();
        }

        protected override void OnNavigatedTo(Windows.UI.Xaml.Navigation.NavigationEventArgs e)
        {
            base.OnNavigatedTo(e);
            var viewModel = this.DataContext as INavigable;
            viewModel.OnNavigatedTo(e.Parameter);
        }

        protected override void OnNavigatedFrom(Windows.UI.Xaml.Navigation.NavigationEventArgs e)
        {
            base.OnNavigatedFrom(e);
            this.ButtonGoBack.Click -= Button_Click;
        }
    }
}