Latest Contributions by GKmieliauskas

Hi, MapView has method AddExploratoryAnalysisAsync. Viewshed is derived from ExploratoryAnalysis. Code below: protected override async void OnClick() { var mapView = MapView.Active; if (mapView == null) return; var observerPointLayer = mapView.Map.GetLayersAsFlattenedList().OfType<FeatureLayer>().FirstOrDefault(layer => layer.Name.Equals("ObserverPoint")); if (observerPointLayer == null) return; ExploratoryAnalysis item0 = await QueuedTask.Run(() => { #region Get the observer point var observerPtCursor = observerPointLayer.Search(); MapPoint observerPoint = null; MapPoint targetPoint = null; MapPoint observerPointProjected = null; while (observerPtCursor.MoveNext()) { var observerPtFeature = observerPtCursor.Current as Feature; observerPoint = observerPtFeature.GetShape() as MapPoint; observerPointProjected = GeometryEngine.Instance. Project(observerPoint, mapView.Map.SpatialReference) as MapPoint; } #endregion Camera camera = new Camera(observerPointProjected.X, observerPointProjected.Y, 10.0, 0, 0); Viewshed viewshed = new Viewshed(camera, 0, 180, 100, 1000); return viewshed; }); await mapView.AddExploratoryAnalysisAsync(item0); } ... View more

Hi, Active layout must be selected before executing code below: protected override void OnClick() { var command = FrameworkApplication.GetPlugInWrapper("esri_sharing_ExportLayout") as ICommand; if (command.CanExecute(null)) command.Execute(null); }   ... View more

That's bad. You need return your list from MCT thread and then set property in UI thread. var locationList = await QueuedTask.Run(() => { var locationList = new ObservableCollection<OffroadLocationNames>(); if (!string.IsNullOrEmpty(pointData.TrafficFeature) && pointData.LocationID > 0) { OffroadLocationNames thisOne = Module1.Current.Cache.OffroadLocations.Data.FirstOrDefault(d => d.LocationId == pointData.LocationID); if (thisOne != null) { locationList.Add(thisOne); locationList.Add(new OffroadLocationNames() { LocationId = -1, LocationName = "" }); } locationList.AddRange(Module1.Current.Cache.OffroadLocations.GetUnusedLocationNames(pointData.TrafficFeature)); return locationList; }); LocationNames = new ObservableCollection<OffroadLocationNames>(locationList); SelectedLocationName = LocationNames.First(); // OrDefault(ln => ln.LocationId == thisOne.LocationId); or  var locationList = new ObservableCollection<OffroadLocationNames>(); if (!string.IsNullOrEmpty(pointData.TrafficFeature) && pointData.LocationID > 0) { OffroadLocationNames thisOne = Module1.Current.Cache.OffroadLocations.Data.FirstOrDefault(d => d.LocationId == pointData.LocationID); if (thisOne != null) { locationList.Add(thisOne); locationList.Add(new OffroadLocationNames() { LocationId = -1, LocationName = "" }); } locationList.AddRange(Module1.Current.Cache.OffroadLocations.GetUnusedLocationNames(pointData.TrafficFeature)); RunOnUIThread(() => { LocationNames = new ObservableCollection<OffroadLocationNames>(locationList); SelectedLocationName = LocationNames.First(); // OrDefault(ln => ln.LocationId == thisOne.LocationId); }); } /// <summary> /// utility function to enable an action to run on the UI thread (if not already) /// </summary> /// <param name="action">the action to execute</param> /// <returns></returns> internal static Task RunOnUIThread(Action action) { if (OnUIThread) { action(); return Task.FromResult(0); } else return Task.Factory.StartNew(action, System.Threading.CancellationToken.None, TaskCreationOptions.None, QueuedTask.UIScheduler); } Sorry for code formating ... View more