Implementing the WalkEntryPage code using C#

Now that we have defined our user interface for our ContentPage using XAML, the next step is to begin creating the underlying C# code within our WalkEntryPage code-behind file, which will eventually be used to save all information entered within this page to a database and refresh our ListView that's contained within our WalksMainPage.

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

Open the WalkEntryPage.xaml.cs code-behind file, ensuring that it is displayed within the code editor, and enter the following code snippet:

 //
 //  WalkEntryPage.xaml.cs
 //  Data Entry screen that allows new walk information to be added
 //
 //  Created by Steven F. Daniel on 14/05/2018
 //  Copyright © 2018 GENIESOFT STUDIOS. All rights reserved.
 //
 using System;
 using Xamarin.Forms;

 namespace TrackMyWalks.Views
 {
     public partial class WalkEntryPage : ContentPage
     {
         public WalkEntryPage()
         {
             InitializeComponent...