diff --git a/Testing/Demo.Docking/MainWindow.xaml.cs b/Testing/Demo.Docking/MainWindow.xaml.cs
new file mode 100644
--- /dev/null
+++ b/Testing/Demo.Docking/MainWindow.xaml.cs
@@ -0,0 +1,158 @@
+using System;
+using System.Windows;
+using System.Diagnostics;
+using System.Threading;
+using GMap.NET.MapProviders;
+
+namespace Sample3
+{
+   /// <summary>
+   /// Interaction logic for MainWindow.xaml
+   /// </summary>
+   public partial class MainWindow : Window
+   {
+      public MainWindow()
+      {
+         InitializeComponent();
+
+         MainMap.MapProvider = GMapProviders.GoogleMap;
+         MapArcGISworldTopo.MapProvider = GMapProviders.ArcGIS_World_Topo_Map;
+
+         MapBing.MapProvider = GMapProviders.BingMap;
+         MapBingHybrid.MapProvider = GMapProviders.BingHybridMap;
+         MapBingOld.MapProvider = GMapProviders.BingMap;
+
+         MapGoogleHybrid.MapProvider = GMapProviders.GoogleHybridMap;
+         MapGoogleTerrain.MapProvider = GMapProviders.GoogleTerrainMap;
+
+         MapYahoo.MapProvider = GMapProviders.YahooMap;
+         MapYahooHybrid.MapProvider = GMapProviders.YahooHybridMap;
+
+         MapYandexMapRuHybrid.MapProvider = GMapProviders.YandexHybridMap;
+         MapYandexRu.MapProvider = GMapProviders.YandexMap;
+
+         MapLt.MapProvider = GMapProviders.LithuaniaMap;
+         MapLtHybrid.MapProvider = GMapProviders.LithuaniaOrtoFotoMap;
+
+         MapOpenStreet.MapProvider = GMapProviders.OpenStreetMap;
+         MapOpenStreetOsm.MapProvider = GMapProviders.OpenStreetOsm;
+         MapOpenStreetSurfer.MapProvider = GMapProviders.OpenStreetMapSurfer;
+
+         this.WindowState = System.Windows.WindowState.Minimized;
+      }
+
+      private void OnMapZoomChanged()
+      {
+         this.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal, new Action(delegate()
+         {
+            var amap = dockManager.ActiveContent.Content as GMap.NET.WindowsPresentation.GMapControl;
+            if(amap != null)
+            {
+               foreach(var d in dockManager.Documents)
+               {
+                  var map = d.Content as GMap.NET.WindowsPresentation.GMapControl;
+
+                  if(map != null && map != amap)
+                  {
+                     if(map.MapProvider.Projection.ToString() == amap.MapProvider.Projection.ToString())
+                     {
+                        map.Zoom = amap.Zoom;
+                     }
+                     else
+                     {
+                        map.SetZoomToFitRect(amap.ViewArea);
+                     }
+                  }
+               }
+            }
+         }));
+      }
+
+      private void OnMapDrag()
+      {
+         this.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Background, new Action(delegate()
+         {
+            var amap = dockManager.ActiveContent.Content as GMap.NET.WindowsPresentation.GMapControl;
+            if(amap != null)
+            {
+               last = amap.Position;
+
+               foreach(var d in dockManager.Documents)
+               {
+                  var map = d.Content as GMap.NET.WindowsPresentation.GMapControl;
+
+                  if(map != null && map != amap)
+                  {
+                     map.Position = amap.Position;
+                  }
+               }
+            }
+         }));
+      }
+
+      GMap.NET.PointLatLng last = new GMap.NET.PointLatLng();
+      GMap.NET.WindowsPresentation.GMapControl lastMap;
+
+      private void DocumentPane_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
+      {
+         if(e.RemovedItems.Count > 0 && e.AddedItems.Count > 0)
+         {
+            var befCont = (e.RemovedItems[0] as AvalonDock.DocumentContent).Content;
+            if(befCont != null)
+            {
+               var before = befCont as GMap.NET.WindowsPresentation.GMapControl;
+               if(before != null)
+               {
+                  var aCont = (e.AddedItems[0] as AvalonDock.DocumentContent).Content;
+                  if(aCont != null)
+                  {
+                     var amap = aCont as GMap.NET.WindowsPresentation.GMapControl;
+                     if(amap != null)
+                     {
+                        //this.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal, new Action(delegate()
+                        //{                   
+
+                        amap.Position = before.Position;
+
+                        if(amap.MapProvider.Projection.ToString() == before.MapProvider.Projection.ToString())
+                        {
+                           amap.Zoom = before.Zoom;
+                        }
+                        else
+                        {
+                           amap.SetZoomToFitRect(before.ViewArea);
+                        }
+                        //}));
+                     }
+
+                     lastMap = amap;
+                  }
+               }
+            }
+         }
+      }
+
+      private void GMapControl_Loaded(object sender, RoutedEventArgs e)
+      {
+         var map = sender as GMap.NET.WindowsPresentation.GMapControl;
+
+         if(lastMap != null && lastMap != map)
+         {
+            map.Position = lastMap.Position;
+
+            if(map.MapProvider.Projection.ToString() == lastMap.MapProvider.Projection.ToString())
+            {
+               map.Zoom = lastMap.Zoom;
+            }
+            else
+            {
+               map.SetZoomToFitRect(lastMap.ViewArea);
+            }
+         }
+         else
+         {
+            map.Position = last;
+         }
+      }
+   }
+}