How to draw driving route direction with Bing maps in C#/XAML Windows 8 app

In one of my app, I have to give feature of drawing route direction with Bing maps. I found an example in JavaScript, but I want the same in C#/XAML. So Richard Brundritt helped me by providing the Bing Maps REST Service helper class, with that I managed to do it. Here I am posting the code. All REST links URL Templates cam be found here. Thanks to Richard Brundritt :)

protected async override void OnNavigatedTo(NavigationEventArgs e)
{
    Uri geocodeRequest = new Uri("http://dev.virtualearth.net/REST/V1/Routes/Driving?o=json&wp.0=28.608280181884766,77.200813293457031&wp.1=19.072799682617188,72.882598876953125&optmz=distance&rpo=Points&key=YOUR_BING_MAP_KEY_HERE"); //Route Ahmedabad to Mumbai

    //Make a request and get the response
    BingMapsRESTService.Response r = await GetResponse(geocodeRequest);

    MapPolyline routeLine = new MapPolyline();
    routeLine.Locations = new LocationCollection();
    routeLine.Color = Colors.Blue;
    routeLine.Width = 5.0;

    int bound = ((BingMapsRESTService.Route)(r.ResourceSets[0].Resources[0])).RoutePath.Line.Coordinates.GetUpperBound(0);
    for (int i = 0; i < bound; i++)
    {
        routeLine.Locations.Add(new Location
        {
            Latitude = ((BingMapsRESTService.Route)(r.ResourceSets[0].Resources[0])).RoutePath.Line.Coordinates[i][0],
            Longitude = ((BingMapsRESTService.Route)(r.ResourceSets[0].Resources[0])).RoutePath.Line.Coordinates[i][1]
        });
    }
    MapShapeLayer shapeLayer = new MapShapeLayer();
    shapeLayer.Shapes.Add(routeLine);
    MyMap.ShapeLayers.Add(shapeLayer);
}


private async Task<Response> GetResponse(Uri uri)
{
    System.Net.Http.HttpClient client = new System.Net.Http.HttpClient();
    var response = await client.GetAsync(uri);
    using (var stream = await response.Content.ReadAsStreamAsync())
    {
        DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(Response));
        return ser.ReadObject(stream) as Response;
    }
}

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