Getting Direction Using Bing Maps in Windows Phone 7

{
// Constructor

GeoCoordinateWatcher watcher; // This is declared global

public MainPage()
{
InitializeComponent();
map1.ZoomBarVisibility = System.Windows.Visibility.Visible; // This sets the Zoom bar in the map visible
map1.LogoVisibility = Visibility.Collapsed; // The Bing map logo is set not to appear in the map
map1.CopyrightVisibility = Visibility.Collapsed; // The bing map copyright text is hidden
map1.Mode = new AerialMode(); // The map is set to load with default view mode as aerial.
if (watcher == null)
{
//---To get the highest accuracy--
watcher = new GeoCoordinateWatcher(GeoPositionAccuracy.High)
{
//---the minimum distance (in meters) to travel before the next location updates---
MovementThreshold = 10
};
//when a new position is obtained---
watcher.PositionChanged += new EventHandler<GeoPositionChangedEventArgs<GeoCoordinate>>(watcher_PositionChanged);
//---event to fire when there is a status change in the location
// service API---
watcher.StatusChanged += new EventHandler<GeoPositionStatusChangedEventArgs>(watcher_StatusChanged);
watcher.Start();
}
}

Now if the status is changed then this method covers the status change event.

void watcher_StatusChanged(object sender, GeoPositionStatusChangedEventArgs e)

{
switch (e.Status)
{
case GeoPositionStatus.Disabled:
if (watcher.Permission == GeoPositionPermission.Denied)
{
// the user has changed the settings in phone.
Debug.WriteLine("Location is disabled.Change Settings");
}
else
{
Debug.WriteLine("Location is not functioning on this phone");
}
break;
case GeoPositionStatus.Initializing: Debug.WriteLine("initializing");
Debug.WriteLine("finding location");
break;
case GeoPositionStatus.NoData: Debug.WriteLine("nodata");
break;
case GeoPositionStatus.Ready: Debug.WriteLine("ready");
break;
}
}

Now if the position of the user changes then this method comes to the rescue to keep updated with changes in positions.

void watcher_PositionChanged(object sender, GeoPositionChangedEventArgs<GeoCoordinate> e)

{
Debug.WriteLine("({0},{1})", e.Position.Location.Latitude, e.Position.Location.Longitude);
map1.Center = new GeoCoordinate(e.Position.Location.Latitude, e.Position.Location.Longitude);
}

Step 9 : Now in the design view double click on the "change view button" and in the code write the code:

private void chngview(object sender, RoutedEventArgs e)

{
if (map1.Mode is RoadMode)
{
map1.Mode = new AerialMode(true);
}
else
{
map1.Mode = new RoadMode();
}
}

Step 10 : Now double click on the "get dir" button; write the following code:

private void getdir(object sender, RoutedEventArgs e)
{
var task = new Microsoft.Phone.Tasks.BingMapsDirectionsTask();
task.Start = new Microsoft.Phone.Tasks.LabeledMapLocation(fromtxtbx.Text, new System.Device.Location.GeoCoordinate());
task.End = new Microsoft.Phone.Tasks.LabeledMapLocation(totxtbx.Text, new System.Device.Location.GeoCoordinate())
task.Show();
}

Step 11 : Now press F5 and see the preview in the Windows Phone emulator. Output.

Changing the mode of the map to Roadmode.

Entering the places:

Time, Distance and directions are displayed in the application.