L'exception System.ArgumentException n'a pas été gérée
  Message=24144: This operation cannot be completed because the instance is not valid. Use MakeValid to convert the instance to a valid instance. Note that MakeValid may cause the points of a geometry instance to shift slightly.
  Source=Microsoft.SqlServer.Types
  StackTrace:
       à Microsoft.SqlServer.Types.SqlGeometry.ThrowIfInvalid()
       à Microsoft.SqlServer.Types.SqlGeometry.STCentroid()
       à ThinkGeo.MapSuite.Core.BaseShape.GetCenterPointCore()
       à ThinkGeo.MapSuite.Core.BaseShape.GetCenterPoint()
       à ThinkGeo.MapSuite.WpfDesktopEdition.EditInteractiveOverlay.CalculateDragControlPointsCore(Feature feature)
       à ThinkGeo.MapSuite.WpfDesktopEdition.EditInteractiveOverlay.CalculateDragControlPoints()
       à ThinkGeo.MapSuite.WpfDesktopEdition.EditInteractiveOverlay.CalculateAllControlPoints()
       à ThinkGeo.MapSuite.WpfDesktopEdition.EditInteractiveOverlay.EndEditingCore(PointShape targetPointShape)
       à ThinkGeo.MapSuite.WpfDesktopEdition.EditInteractiveOverlay.EndEditing(PointShape targetPointShape)
       à ThinkGeo.MapSuite.WpfDesktopEdition.EditInteractiveOverlay.MouseUpCore(InteractionArguments interactionArguments)
       à ThinkGeo.MapSuite.WpfDesktopEdition.InteractiveOverlay.MouseUp(InteractionArguments interactionArguments)
       à ThinkGeo.MapSuite.WpfDesktopEdition.WpfMap.XRY=(InteractionArguments XhY=)
       à ThinkGeo.MapSuite.WpfDesktopEdition.WpfMap.WhY=(Object WxY=, MouseButtonEventArgs XBY=)
       à ohM=.Dxg=.OnMouseButtonUp(Object sender, MouseButtonEventArgs e)
       à System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
       à System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       à System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       à System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       à System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       à System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
       à System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
       à System.Windows.Input.InputManager.ProcessStagingArea()
       à System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
       à System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
       à System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
       à System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       à System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       à MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       à MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
       à System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
       à MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
       à System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
       à MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
       à MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
       à System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
       à System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
       à System.Windows.Application.RunDispatcher(Object ignore)
       à System.Windows.Application.RunInternal(Window window)
       à System.Windows.Application.Run(Window window)
       à System.Windows.Application.Run()
       à ThinkGeo_1.App.Main() dans C:\Steph_WPFCarto\TestApp\ThinkGeo_1_20120926_Dll60135\ThinkGeo_1\ThinkGeo_1\obj\x86\Debug\App.g.cs:ligne 0
       à System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       à System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       à Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       à System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       à System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
       à System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       à System.Threading.ThreadHelper.ThreadStart()
  InnerException: