You can do it something like this, not very nice sample but you get the point
View : Notice binding
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<esri:MapView x:Name="MyMapView"
LayerLoaded="MyMapView_LayerLoaded">
<esri:Map>
<layers:ArcGISTiledMapServiceLayer ID="Basemap"
ServiceUri="http://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer"/>
</esri:Map>
</esri:MapView>
<Button Command="{Binding ElementName=MyMapView, Path=Editor.AddVertex}" CommandParameter="{Binding GPSLocation}"
Background="Green"
Width="100" Height="100" HorizontalAlignment="Right" VerticalAlignment="Top"
>add vertex</Button>
</Grid>
ViewModel
public class MainPageViewModel : INotifyPropertyChanged
{
DispatcherTimer timer;
public MainPageViewModel()
{
timer = new DispatcherTimer()
{
Interval = new TimeSpan(0, 0, 3)
};
timer.Tick += timer_Tick;
timer.Start();
GPSLocation = new MapPoint(0, 0, SpatialReferences.WebMercator);
}
void timer_Tick(object sender, object e)
{
var random = new Random(DateTime.Now.Millisecond);
GPSLocation = new MapPoint(random.Next(-10000000, 10000000), random.Next(-1000000,1000000), GPSLocation.SpatialReference);
}
private MapPoint _gpsLocation;
public MapPoint GPSLocation
{
get { return _gpsLocation; }
set { _gpsLocation = value; RaisePropertyChanged("GPSLocation"); }
}
public event PropertyChangedEventHandler PropertyChanged;
protected void RaisePropertyChanged(string name)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(name));
}
}
}
And set DataContext to new MainPageViewModel and activate editor. For example like this
public MainPage()
{
this.InitializeComponent();
DataContext = new MainPageViewModel();
MyMapView.NavigationCompleted += MyMapView_NavigationCompleted;
}
private async void MyMapView_NavigationCompleted(object sender, EventArgs e)
{
MyMapView.NavigationCompleted -= MyMapView_NavigationCompleted;
try
{
var geom = await MyMapView.Editor.RequestShapeAsync(DrawShape.Polygon);
}
catch (Exception)
{
// todo
}
}
Hope this helps.
