Extending the ArticleView to receive query data

The ArticleView is responsible for rendering the article for us. To keep things simple (and also illustrate that you don't always need a ViewModel), we will not define a ViewModel for this class, but rather define the BindingContext as an instance of the UrlWebViewSource class.

Add the following code to the ArticleView.xaml.cs file:

1. In the News project, expand the Views folder and open the ArticleView.xaml.cs file.
2. Add the following code marked in bold to the file:

using System.Web;
using Xamarin.Forms;

namespace News.Views
{
    [QueryProperty("Url", "url")]
    public partial class ArticleView : ContentPage
    {
        public string Url
        {
            set
            {
                BindingContext = new UrlWebViewSource
                {
                    Url = HttpUtility.UrlDecode(value)
                };
            }
        }

        public ArticleView()
        {
            InitializeComponent();
        }
 ...