//Create a CIMSymbol from style item selected in the results gallery list box and //apply this newly created symbol to the feature layer currently selected in Contents pane private async void ApplyTheSelectedSymbol(SymbolStyleItem selectedStyleItemToApply) { if (selectedStyleItemToApply == null || string.IsNullOrEmpty(selectedStyleItemToApply.Key)) { return; } await QueuedTask.Run(() => { //Get the feature layer currently selected in the Contents pane var selectedLayers = MapView.Active.GetSelectedLayers(); //Only one feature layer should be selected in the Contents pane if (selectedLayers.Count != 1) { ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show("Select the feature layer to which you want to apply the selected symbol. Only one feature layer should be selected."); //Clear the current selection in gallery _selectedStyleItem = null; NotifyPropertyChanged(() => SelectedStyleItem); return; } FeatureLayer ftrLayer = selectedLayers[0] as FeatureLayer; //The selected layer should be a feature layer if (ftrLayer == null) { return; } //Get symbol from symbol style item. CIMSymbol symbolFromStyleItem = selectedStyleItemToApply.Symbol; //Make sure there isn't a mismatch between the type of selected symbol in gallery and feature layer geometry type if ((symbolFromStyleItem is CIMPointSymbol && ftrLayer.ShapeType != esriGeometryType.esriGeometryPoint) || (symbolFromStyleItem is CIMLineSymbol && ftrLayer.ShapeType != esriGeometryType.esriGeometryPolyline) || (symbolFromStyleItem is CIMPolygonSymbol && ftrLayer.ShapeType != esriGeometryType.esriGeometryPolygon && ftrLayer.ShapeType != esriGeometryType.esriGeometryMultiPatch)) { ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show("There is a mismatch between symbol type and feature layer geometry type."); //Clear the current selection in gallery _selectedStyleItem = null; NotifyPropertyChanged(() => SelectedStyleItem); return; } //Get simple renderer from feature layer CIMSimpleRenderer currentRenderer = ftrLayer.GetRenderer() as CIMSimpleRenderer; if (currentRenderer == null) { ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show("Select a feature layer symbolized with a simple renderer."); //Clear the current selection in gallery _selectedStyleItem = null; NotifyPropertyChanged(() => SelectedStyleItem); return; } //Set real world setting for created symbol = feature layer's setting //so that there isn't a mismatch between symbol and feature layer SymbolFactory.SetRealWorldUnits(symbolFromStyleItem, ftrLayer.UsesRealWorldSymbolSizes); //Set current renderer's symbol reference = symbol reference of the newly created symbol currentRenderer.Symbol = SymbolFactory.MakeSymbolReference(symbolFromStyleItem); //Update feature layer renderer with new symbol ftrLayer.SetRenderer(currentRenderer); }); }