ThinkGeo Team,
With the below code an exception as shown below is encountered on the mapView.Refresh.
I have the same code in MapSuite application and it does not encounter an exception.
I realize the LayerOverlay does not have a layer but neither does it at this point in my MapSuite applications. The Layers are loaded later after the layers that need to be loaded are known.
Would you change this so it behaves like MapSuite please?
Thanks,
Dennis
LayerOverlay TheLayerOverlay;
// set map unit
mapView.MapUnit = GeographyUnit.Meter;
// instantiate the LayerOverlay
TheLayerOverlay = new LayerOverlay();
TheLayerOverlay.Name = string.Format("{0}", "TheLayerOverlay");
TheLayerOverlay.TileBuffer = 1;
TheLayerOverlay.TileWidth = 1920;
TheLayerOverlay.TileHeight = 1200;
TheLayerOverlay.TileType = TileType.MultiTile;
// load the LayerOverlay
mapView.Overlays.Add(TheLayerOverlay);
// refresh
mapView.Refresh();
System.ArgumentNullException
HResult=0x80004003
Message=The parameter you supplied may not be null. (Parameter 'worldExtent')
Source=ThinkGeo.Core
StackTrace:
at ThinkGeo.Core.ValidatorHelper.CheckObjectIsNotNull(Object parameterObject, String parameterName)
at ThinkGeo.Core.MapUtil.GetScale(GeographyUnit mapUnit, RectangleShape boundingBox, Double widthInPixel, Double heightInPixel, Single dpi)
at ThinkGeo.UI.Wpf.MapView.GetSnappedZoomLevelIndex(RectangleShape targetExtent)
at ThinkGeo.UI.Wpf.MapView.GetSnappedExtent(RectangleShape extent)
at ThinkGeo.UI.Wpf.MapView.50Q=()
at ThinkGeo.UI.Wpf.MapView.get_CurrentExtent()
at ThinkGeo.UI.Wpf.MapView.Refresh(OverlayRefreshType refreshType)
at OriStarPrototype.MainWindow.MapViewLoaded(Object sender, RoutedEventArgs e) in C:\OriStarMappingIncThinkGeoUI-V12.1\OriStarPrototype\MainWindow.xaml.cs:line 87
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
at System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)
at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root)
at MS.Internal.LoadedOrUnloadedOperation.DoWork()
at System.Windows.Media.MediaContext.FireLoadedPendingCallbacks()
at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
at System.Windows.Media.MediaContext.Resize(ICompositionTarget resizedCompositionTarget)
at System.Windows.Interop.HwndTarget.OnResize()
at System.Windows.Interop.HwndTarget.HandleMessage(WindowMessage msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)