Updating the WalksMainPage code-behind using C#

Now that we have updated our WalksMainPageViewModel to take advantage of our NavigationService, which will enable our ViewModel to navigate within the navigation stack, the next step is to begin updating the underlying C# code within our WalksMainPage code-behind file so that it will communicate with our ViewModel so that we can navigate.

Let's take a look at how we can achieve this by following these steps:

1. Open the WalksMainPage.xaml.cs code-behind file, ensuring that it is displayed within the code editor, and enter the following highlighted code sections:

     //
     //  WalksMainPage.xaml.cs
     //  Displays Walk Information within a ListView control from an array 
     //
     //  Created by Steven F. Daniel on 14/05/2018
     //  Copyright © 2018 GENIESOFT STUDIOS. All rights reserved.
     //
     using System;
     using TrackMyWalks.Models;
using TrackMyWalks.Services;
using TrackMyWalks.ViewModels;
     using Xamarin.Forms;

    ...