private async void EditButtonClick(object sender, RoutedEventArgs e)
{
try
{
// Set the focus to the map view(close the flyout panel)
DrawToolsFlyout.Hide();
// Allow the user to select a graphic
Graphic editGraphic = await GetGraphicAsync();
if (editGraphic == null)
{
return;
}
// Let the user make changes to the graphic's geometry, await the result (updated geometry)
Esri.ArcGISRuntime.Geometry.Geometry newGeometry = await MyMapView.SketchEditor.StartAsync(editGraphic.Geometry);
// Display the updated geometry in the graphic
editGraphic.Geometry = newGeometry;
}
catch (TaskCanceledException)
{
// Ignore ... let the user cancel editing
}
catch (Exception ex)
{
// Report exceptions
var dialog = new MessageDialog("Error editing shape: " + ex.Message);
dialog.ShowAsync();
}
}
private async void DrawButtonClick(object sender, RoutedEventArgs e)
{
try
{
// Set the focus to the map view(close the flyout panel)
DrawToolsFlyout.Hide();
// Let the user draw on the map view using the chosen sketch mode
SketchCreationMode creationMode = (SketchCreationMode)SketchModeComboBox.SelectedItem;
Esri.ArcGISRuntime.Geometry.Geometry geometry = await MyMapView.SketchEditor.StartAsync(creationMode, true);
// Create and add a graphic from the geometry the user drew
Graphic graphic = CreateGraphic(geometry);
_sketchOverlay.Graphics.Add(graphic);
// Enable/disable the clear and edit buttons according to whether or not graphics exist in the overlay
ClearButton.IsEnabled = _sketchOverlay.Graphics.Count > 0;
EditButton.IsEnabled = _sketchOverlay.Graphics.Count > 0;
}
catch (TaskCanceledException)
{
// Ignore ... let the user cancel drawing
}
catch (Exception ex)
{
// Report exceptions
var dialog = new MessageDialog("Error drawing graphic shape: " + ex.Message);
dialog.ShowAsync();
}
}
