Advanced Live Tiles, Part 3: Lock Screens: Listing 4

The MainPage code-behind source code.

• By Eric Vogel
• 07/29/2012

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
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;
using Windows.ApplicationModel.Background;
using Windows.UI.Notifications;
using Windows.Data.Xml.Dom;

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

namespace VSMAdvancedTilesP3Demo
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();
        }

        /// <summary>
        /// Invoked when this page is about to be displayed in a Frame.
        /// </summary>
        /// <param name="e">Event data that describes how this page was reached.  The Parameter
        /// property is typically used to configure the page.</param>
        protected async override void OnNavigatedTo(NavigationEventArgs e)
        {
             BackgroundAccessStatus status = await BackgroundExecutionManager.RequestAccessAsync();
             Status.Text = GetBadgeAcessMessage(status);
        }

        private string GetBadgeAcessMessage(BackgroundAccessStatus status)
        {
            string message = string.Empty;

            switch (status)
            {
                case BackgroundAccessStatus.AllowedMayUseActiveRealTimeConnectivity:
                    message = "May use active real-time connectivity.";
                    break;
                case BackgroundAccessStatus.AllowedWithAlwaysOnRealTimeConnectivity:
                    message = "Always on real-time connectivity.";
                    break;
                case BackgroundAccessStatus.Denied:
                    message = "User denied lock screen badge access.";
                    break;
                case BackgroundAccessStatus.Unspecified:
                default:
                    message = "Unknown lock screen badge access status.";
                    break;
            }

            return message;
        }

        private void SendBadge_Click(object sender, RoutedEventArgs e)
        {
            string badge = String.Format("<badge value=\"{0}\"/>", Message.Text);
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.LoadXml(badge);
            BadgeNotification badgeNotification = new BadgeNotification(xmlDoc);
            BadgeUpdateManager.CreateBadgeUpdaterForApplication().Update(badgeNotification);
            Status.Text = "Lock Screen Badge was sent.";
        }

        private void SendTile_Click(object sender, RoutedEventArgs e)
        {
            string tile = (String.Format("<tile><visual><binding template=\"TileWideText01\">" +
                      "<text id=\"1\">{0}</text>" +
                      "<text id=\"2\"> </text>" +
                    "</binding>" +
                    "<binding template=\"TileSquareText03\">" +
                      "<text id=\"1\">{0}</text>" +
                      "<text id=\"2\"> </text>" +
                    "</binding>" +
                  "</visual>" +
                "</tile>", Message.Text));
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.LoadXml(tile);
            TileNotification tileNotification = new TileNotification(xmlDoc);
            TileUpdateManager.CreateTileUpdaterForApplication().Update(tileNotification);
            Status.Text = "Lock Screen Tile was sent.";
        }
    }
}