I just upgraded to the new 2009 version of the controls and I found out that some of my old code isn't working anymore: I had a couple of XamDataGrid's in my application and I was using FieldLayoutSettings.DataRecordCellAreaGridTemplate to create a custom gridlayout for the fields. But I'm getting a NullReferenceException whenever I resize a field to the right. Yes this might sound strange but it's true, only when I resize a field to the right the exception is thrown and when I resize it to the left everything works fine....
Here is the code I'm using:
<igDP:XamDataGrid Name="dataGrid" GroupByAreaLocation="None" Theme="Office2k7Blue" ScrollingMode="Immediate" AutoFit ="True" AllowDrop="True" DragDrop.Drop="dataGrid_Drop" DragDrop.PreviewDragOver="dataGrid_PreviewDragOver" Background="Transparent"> <igDP:XamDataGrid.FieldLayoutSettings> <igDP:FieldLayoutSettings AutoGenerateFields="False" SelectionTypeRecord="Single" AllowAddNew="False" AllowDelete="False"> <igDP:FieldLayoutSettings.DataRecordCellAreaGridTemplate> <ItemsPanelTemplate> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="150*"/> <ColumnDefinition Width="100*"/> <ColumnDefinition Width="50"/> </Grid.ColumnDefinitions> </Grid> </ItemsPanelTemplate> </igDP:FieldLayoutSettings.DataRecordCellAreaGridTemplate> </igDP:FieldLayoutSettings> </igDP:XamDataGrid.FieldLayoutSettings> <igDP:XamDataGrid.FieldLayouts> <igDP:FieldLayout> <igDP:FieldLayout.Fields> <igDP:Field Name="Name" Label="{DynamicResource QuestionText}"> <igDP:Field.Settings> <igDP:FieldSettings AllowEdit="False" AllowGroupBy="False" AllowSummaries="False" CellClickAction="SelectRecord"> <igDP:FieldSettings.CellValuePresenterStyle> <Style TargetType="{x:Type igDP:CellValuePresenter}"> <Setter Property="ToolTip" Value="{Binding Path=DataItem.Name}"/> </Style> </igDP:FieldSettings.CellValuePresenterStyle> </igDP:FieldSettings> </igDP:Field.Settings> </igDP:Field> <igDP:Field Name="ReportText" Label="{DynamicResource ReportText}"> <igDP:Field.Settings> <igDP:FieldSettings AllowEdit="False" AllowGroupBy="False" AllowSummaries="False" CellClickAction="SelectRecord"> <igDP:FieldSettings.CellValuePresenterStyle> <Style TargetType="{x:Type igDP:CellValuePresenter}"> <Setter Property="ToolTip" Value="{Binding Path=DataItem.ReportText}"/> </Style> </igDP:FieldSettings.CellValuePresenterStyle> </igDP:FieldSettings> </igDP:Field.Settings> </igDP:Field> <igDP:Field Name="NumberOfTimesAsked" Label="{DynamicResource ColumnNumberOfTimesAsked}"> <igDP:Field.Settings> <igDP:FieldSettings AllowEdit="False" AllowGroupBy="False" AllowSummaries="False" CellClickAction="SelectRecord" /> </igDP:Field.Settings> </igDP:Field> </igDP:FieldLayout.Fields> </igDP:FieldLayout> </igDP:XamDataGrid.FieldLayouts> </igDP:XamDataGrid>
And more info on the Exception:
System.NullReferenceException was unhandled Message="Object reference not set to an instance of an object." Source="Infragistics3.Wpf.DataPresenter.v9.1" StackTrace: at Infragistics.Windows.DataPresenter.DataPresenterBase.Infragistics.Windows.Resizing.IResizeHost.Resize(FrameworkElement resizableItem, Boolean resizeInXAxis, Double delta) at Infragistics.Windows.Resizing.ResizeController.ResizeToNewMousePosition(MouseDevice mouseDevice) at Infragistics.Windows.Resizing.ResizeController.OnPreviewMouseLeftButtonUp(Object sender, MouseButtonEventArgs e) at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent) at System.Windows.UIElement.CrackMouseButtonEventAndReRaiseEvent(DependencyObject sender, MouseButtonEventArgs e) at System.Windows.UIElement.OnPreviewMouseUpThunk(Object sender, MouseButtonEventArgs e) at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) 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 args, Boolean trusted) at System.Windows.Input.InputManager.ProcessStagingArea() at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input) at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport) at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel) at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at System.Windows.Interop.HwndSource.InputFilterMessage(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, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter) at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.RunInternal(Window window) at System.Windows.Application.Run(Window window) at System.Windows.Application.Run() at Questionbase.QuestionbaseManager.TestClient.App.Main() in D:\Projects\Effectory Questionbase\Questionbase\Questionbase.TestClient\obj\Debug\App.g.cs:line 0 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args) at System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel) at System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly() at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData) at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext) at System.Activator.CreateInstance(ActivationContext activationContext) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException:
Hello,
This seems to be an issue. I will create a support case on your behalf and log the issue in.
Alex.
Thanks, will keep the forum updated
Edit 04-10-2009: Still no update :(
Zenuka,
I will create a support case on the second issue with the ScrollBars and at this point, it is best to continue this discussion through our support system.
FYI for others with this problem. I have a support case that has been open a couple of weeks. The fix is still pending.
Alex created the support ticket for me on april 7 but no one has given me an update.It's still marked as "In development"
I just checked the progress of this support case and issue for you.
The issue has been fixed and this will be working correctly in next versions and Service Releases.
Regards,
Thanks for the update!
Fixed in "WPF 2009 Vol. 1 - Service Release"