Windows Store Apps and Bing Maps Zoom Level / Current Location (C#)

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Devices.Geolocation;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Core;
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 Bing.Maps;
using Windows.UI.Popups;

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

namespace WindowsStoreApps
{
    /// <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();
             InitializeMap();
        }


        void InitializeMap()
        {

            double lat = 13.815361;
            double lon =100.560822;
            
            // Map Center
            myMap.Credentials = "INSERT_YOUR_BING_MAP_KEY";
            myMap.Center = new Location(lat, lon);
            myMap.ZoomLevel = 19;
            myMap.MapType = MapType.Aerial;
            myMap.Width = 800;
            myMap.Height = 800;

            // Pin
            Pushpin pushpin = new Pushpin();
            pushpin.Tapped += new TappedEventHandler(pushpinTapped);
            MapLayer.SetPosition(pushpin, new Location(13.815361, 100.560822));
            myMap.Children.Add(pushpin);

        }

        private async void pushpinTapped(object sender, TappedRoutedEventArgs e)
        {
            MessageDialog dialog = new MessageDialog("This is Central Patpharo.");
            await dialog.ShowAsync();
        }

    }

}

        void InitializeMap()
        {

            double lat = 13.815361;
            double lon =100.560822;
            
            // Map Center
            myMap.Credentials = "ApIK4f8y5DWR-_8PTeiEBjnO1kcZJPpW3XJ4vzHHumF54wWLQvASeSmGWGkJObw0";
            myMap.Center = new Location(lat, lon);
            myMap.ZoomLevel = 17;
            myMap.MapType = MapType.Aerial;
            myMap.Width = 800;
            myMap.Height = 800;

            // Pin 1
            double lat1 = 13.815361;
            double lon1 = 100.560822;
            Pushpin pushpin1 = new Pushpin();
            MapLayer.SetPosition(pushpin1, new Location(lat1, lon1));
            myMap.Children.Add(pushpin1);

            // Pin 2
            double lat2 = 13.81433;
            double lon2 = 100.560162;
            Pushpin pushpin2 = new Pushpin();
            MapLayer.SetPosition(pushpin2, new Location(lat2, lon2));
            myMap.Children.Add(pushpin2);

        }

var location = new Geolocator();

location.DesiredAccuracy = PositionAccuracy.High;
Geoposition pos = await location.GetGeopositionAsync();

double lat = pos.Coordinate.Latitude;
double lon = pos.Coordinate.Longitude;

<Page
    x:Class="WindowsStoreApps.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:WindowsStoreApps"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    xmlns:bm="using:Bing.Maps">

    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

        <bm:Map  x:Name="myMap">
            <bm:Map.Center>
                <bm:Location />
            </bm:Map.Center>
        </bm:Map>

    </Grid>

</Page>