ArcGISWindowsPhoneSDK.EditorTracking.MyMap_MapGesture C# (CSharp) Méthode

        private void MyMap_MapGesture(object sender, Map.MapGestureEventArgs e)
        {
            if (isAdd)
                return;

            // open the feature dialog on tap of a feature
            if (e.Gesture == GestureType.Tap)
            {
                IEnumerable<Graphic> graphics = e.DirectlyOver(10, new GraphicsLayer[] { featureLayer } );
                foreach (Graphic graphic in graphics)
                {
                    // if editable, make the editable fields enabled. Otherwise disable them
                    if (featureLayer.IsUpdateAllowed(graphic))
                    {
                        RotationTB.IsEnabled = true;
                        DescriptionTB.IsEnabled = true;
                        DateTB.IsEnabled = true;
                        TypeButton.IsEnabled = true;
                    }
                    else
                    {
                        RotationTB.IsEnabled = false;
                        DescriptionTB.IsEnabled = false;
                        DateTB.IsEnabled = false;
                        TypeButton.IsEnabled = false;
                    }

                    // show the attribute page for the first of the graphics returned
                    FeatureInfoPage.IsOpen = true;
                    ApplicationBar.IsVisible = false;

                    FeatureInfoPage.DataContext = graphic;

                    // select the type value in the ListBoxes to match the graphic's attributes
                    var typeMatches = FeatureTypeListBox.Items.Where(a => (a as TemplateItem).ID.Equals(graphic.Attributes["eventtype"]));
                    if (typeMatches.Any())
                        FeatureTypeListBox.SelectedItem = typeMatches.First();

                    return;
                }
            }

            // move a held feature
            if (e.Gesture == GestureType.Hold)
            {
                IEnumerable<Graphic> graphics = e.DirectlyOver(10, new GraphicsLayer[] { featureLayer } );
                foreach (Graphic graphic in graphics)
                {
                    if (graphic != null && !graphic.Selected && featureLayer.IsUpdateAllowed(graphic))
                    {
                        Editor editor = LayoutRoot.Resources["MyEditor"] as Editor;
                        if (featureLayer.IsUpdateAllowed(graphic))
                        {
                            if (editor.EditVertices.CanExecute(null))
                                editor.EditVertices.Execute(null);
                        }
                        else
                            if (editor.CancelActive.CanExecute(null))
                                editor.CancelActive.Execute(null);
                    }
                    featureLayer.ClearSelection();
                    graphic.Select();
                }
            }
        }