ViewGPXBingMapsSilverlightControl.cs

using System;
using System.Linq;
using System.Windows.Controls;
using System.Windows.Media;
using System.Xml.Linq;
using Microsoft.Maps.MapControl;

namespace Map
{
    public partial class MainPage : UserControl
    {
        private LocationCollection ReadTcxFile(string url)
        {
            XNamespace g = "http://www.topografix.com/GPX/1/1";
            XDocument root = XDocument.Load(url);
            var trkpts = root.Element(g + "gpx").Element(g + "trk").Element(g + "trkseg").Elements(g + "trkpt");
            var pts = from trkpt in trkpts
                      select new {
                          lat = Convert.ToDouble((string)trkpt.Attribute("lat")),
                          lon = Convert.ToDouble((string)trkpt.Attribute("lon")),
                      };

            var result = new LocationCollection();
            foreach (var pt in pts)
            {
                result.Add(new Location(pt.lat, pt.lon));
            }
            return result;
        }

        public MainPage()
        {
            InitializeComponent();
           
            MyMap.Mode = new RoadMode();

            var line = new MapPolyline();
            line.Stroke = new SolidColorBrush(Colors.Blue);
            line.StrokeThickness = 5;
            line.Opacity = 0.5;
            line.Locations = ReadTcxFile("ride.gpx");
            MyMap.Center = line.Locations[0];
            MyMap.ZoomLevel = 14;
            MyMap.Children.Add(line);
        }
    }
}