Updating the WalkDistancePageViewModel using C#

Now that we have updated our WalkTrailInfoPage code-behind file so that it can reference the NavigationService class, thereby enabling it to navigate to our ViewModels within our navigation stack, we can proceed and start updating the WalkDistancePageViewModel class so that it can use our navigation service.

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

1. Ensure that the WalkDistancePageViewModel.cs file is displayed within the code editor and enter the following highlighted code sections within the code snippet:

     //
     //  WalkDistancePagePageViewModel.cs
     //  The ViewModel for our WalkDistancePage ContentPage
     //
     //  Created by Steven F. Daniel on 5/06/2018
     //  Copyright © 2018 GENIESOFT STUDIOS. All rights reserved.
     //
     using System;
     using System.Threading.Tasks...