Пример #1
0
        private async void LoadLayers_Clicked(object sender, RoutedEventArgs e)
        {
            // Skip if nothing selected.
            if (OgcFeatureCollectionList.SelectedItems.Count < 1)
            {
                return;
            }

            // Show the progress bar.
            LoadingProgressBar.Visibility = Visibility.Visible;

            // Clear the existing layers.
            MyMapView.Map.OperationalLayers.Clear();

            try
            {
                // Get the selected collection.
                OgcFeatureCollectionInfo selectedCollectionInfo = (OgcFeatureCollectionInfo)OgcFeatureCollectionList.SelectedItems[0];

                // Create the OGC feature collection table.
                OgcFeatureCollectionTable table = new OgcFeatureCollectionTable(selectedCollectionInfo);

                // Set the feature request mode to manual (only manual is currently supported).
                // In this mode, you must manually populate the table - panning and zooming won't request features automatically.
                table.FeatureRequestMode = FeatureRequestMode.ManualCache;

                // Populate the OGC feature collection table.
                QueryParameters queryParamaters = new QueryParameters();
                queryParamaters.MaxFeatures = 1000;
                await table.PopulateFromServiceAsync(queryParamaters, false, null);

                // Create a feature layer from the OGC feature collection table.
                FeatureLayer ogcFeatureLayer = new FeatureLayer(table);

                // Choose a renderer for the layer based on the table.
                ogcFeatureLayer.Renderer = GetRendererForTable(table) ?? ogcFeatureLayer.Renderer;

                // Add the layer to the map.
                MyMapView.Map.OperationalLayers.Add(ogcFeatureLayer);

                // Zoom to the extent of the selected collection.
                if (selectedCollectionInfo.Extent is Envelope collectionExtent && !collectionExtent.IsEmpty)
                {
                    await MyMapView.SetViewpointGeometryAsync(collectionExtent, 100);
                }
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex);
                await new MessageDialog(ex.Message, "Error loading service").ShowAsync();
            }
            finally
            {
                // Hide the progress bar.
                LoadingProgressBar.Visibility = Visibility.Collapsed;
            }
        }
        private async void LayerMenu_LayerSelected(object sender, PopupMenu.MenuItemClickEventArgs e)
        {
            // Show the progress bar.
            _loadingProgressBar.Visibility = ViewStates.Visible;

            // Clear the existing layers.
            _myMapView.Map.OperationalLayers.Clear();

            try
            {
                // Get the selected collection.
                OgcFeatureCollectionInfo selectedCollectionInfo = _serviceInfo.FeatureCollectionInfos[e.Item.Order];

                // Create the OGC feature collection table.
                OgcFeatureCollectionTable table = new OgcFeatureCollectionTable(selectedCollectionInfo);

                // Set the feature request mode to manual (only manual is currently supported).
                // In this mode, you must manually populate the table - panning and zooming won't request features automatically.
                table.FeatureRequestMode = FeatureRequestMode.ManualCache;

                // Populate the OGC feature collection table.
                QueryParameters queryParamaters = new QueryParameters();
                queryParamaters.MaxFeatures = 1000;
                await table.PopulateFromServiceAsync(queryParamaters, false, null);

                // Create a feature layer from the OGC feature collection table.
                FeatureLayer ogcFeatureLayer = new FeatureLayer(table);

                // Choose a renderer for the layer based on the table.
                ogcFeatureLayer.Renderer = GetRendererForTable(table) ?? ogcFeatureLayer.Renderer;

                // Add the layer to the map.
                _myMapView.Map.OperationalLayers.Add(ogcFeatureLayer);

                // Zoom to the extent of the selected collection.
                if (selectedCollectionInfo.Extent is Envelope collectionExtent && !collectionExtent.IsEmpty)
                {
                    await _myMapView.SetViewpointGeometryAsync(collectionExtent, 100);
                }
            }
            catch (Exception exception)
            {
                System.Diagnostics.Debug.WriteLine(exception);
                new AlertDialog.Builder(this).SetMessage(exception.ToString()).SetTitle("Couldn't load layer.").Show();
            }
            finally
            {
                // Hide the progress bar.
                _loadingProgressBar.Visibility = ViewStates.Gone;
            }
        }
Пример #3
0
        private async void LoadSelectedLayer(OgcFeatureCollectionInfo selectedLayerInfo)
        {
            // Show the progress bar.
            _loadingProgressBar.StartAnimating();

            // Clear the existing layers.
            _myMapView.Map.OperationalLayers.Clear();

            try
            {
                // Create the OGC feature collection table.
                OgcFeatureCollectionTable table = new OgcFeatureCollectionTable(selectedLayerInfo);

                // Set the feature request mode to manual (only manual is currently supported).
                // In this mode, you must manually populate the table - panning and zooming won't request features automatically.
                table.FeatureRequestMode = FeatureRequestMode.ManualCache;

                // Populate the OGC feature collection table.
                QueryParameters queryParamaters = new QueryParameters();
                queryParamaters.MaxFeatures = 1000;
                await table.PopulateFromServiceAsync(queryParamaters, false, null);

                // Create a feature layer from the OGC feature collection table.
                FeatureLayer ogcFeatureLayer = new FeatureLayer(table);

                // Choose a renderer for the layer based on the table.
                ogcFeatureLayer.Renderer = GetRendererForTable(table) ?? ogcFeatureLayer.Renderer;

                // Add the layer to the map.
                _myMapView.Map.OperationalLayers.Add(ogcFeatureLayer);

                // Zoom to the extent of the selected collection.
                if (selectedLayerInfo.Extent is Envelope collectionExtent && !collectionExtent.IsEmpty)
                {
                    await _myMapView.SetViewpointGeometryAsync(collectionExtent, 100);
                }
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex);
                new UIAlertView("Couldn't load layer.", ex.Message, (IUIAlertViewDelegate)null, "OK", null).Show();
            }
            finally
            {
                // Hide the progress bar.
                _loadingProgressBar.StopAnimating();
            }
        }