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    While running the project I am getting the below error.

    System.NullReferenceException was unhandled
      HResult=-2147467261
      Message=Object reference not set to an instance of an object.
      Source=PresentationFramework
      StackTrace:
           at System.Windows.Controls.Grid.SetFinalSize(DefinitionBase[] definitions, Double finalSize, Boolean columns)
           at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at MS.Internal.Helper.ArrangeElementWithSingleChild(UIElement element, Size arrangeSize)
           at System.Windows.Controls.ItemsPresenter.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Border.ArrangeOverride(Size finalSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at MS.Internal.Helper.ArrangeElementWithSingleChild(UIElement element, Size arrangeSize)
           at System.Windows.Controls.ContentPresenter.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at MS.Internal.Helper.ArrangeElementWithSingleChild(UIElement element, Size arrangeSize)
           at System.Windows.Controls.ContentPresenter.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Border.ArrangeOverride(Size finalSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at DevExpress.Xpf.Core.Native.DockPanelLayoutHelper.ArrangeDockPanelLayout(FrameworkElement parent, Size arrangeSize, Boolean lastChildFill, SkipLayout skipLayout, IsLastChild isLastChild)
           at DevExpress.Xpf.Bars.BarManager.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at MS.Internal.Helper.ArrangeElementWithSingleChild(UIElement element, Size arrangeSize)
           at System.Windows.Controls.ContentPresenter.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Border.ArrangeOverride(Size finalSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at MS.Internal.Helper.ArrangeElementWithSingleChild(UIElement element, Size arrangeSize)
           at System.Windows.Controls.ContentPresenter.ArrangeOverride(Size arrangeSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Documents.AdornerDecorator.ArrangeOverride(Size finalSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Controls.Border.ArrangeOverride(Size finalSize)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Window.ArrangeOverride(Size arrangeBounds)
           at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
           at System.Windows.UIElement.Arrange(Rect finalRect)
           at System.Windows.Interop.HwndSource.SetLayoutSize()
           at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
           at System.Windows.Window.SetRootVisualAndUpdateSTC()
           at System.Windows.Window.SetupInitialState(Double requestedTop, Double requestedLeft, Double requestedWidth, Double requestedHeight)
           at System.Windows.Window.CreateSourceWindow(Boolean duringShow)
           at System.Windows.Window.ShowHelper(Object booleanBox)
           at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
           at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
           at System.Windows.Threading.DispatcherOperation.InvokeImpl()
           at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
           at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
           at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
           at System.Windows.Threading.DispatcherOperation.Invoke()
           at System.Windows.Threading.Dispatcher.ProcessQueue()
           at System.Windows.Threading.Dispatcher.WndProcHook(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 MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, 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)
           at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
           at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
           at System.Windows.Application.RunInternal(Window window)
           at System.Windows.Application.Run()

    Can anybody help me on that?

    Nisheeth

    Tuesday, October 30, 2012 12:12 PM

Answers

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    You will really have to give more information than that. When debugging, do you see what variable is set to null? If it comes from deeper within a devexpress component, you should try asking on their support forum. Though there you will also need to give more info, include a code sample at least.
    • Marked as answer by NisheethTak Friday, November 2, 2012 7:13 AM
    Wednesday, October 31, 2012 10:46 AM
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    Hi Nisheeth,

    The information u have provided in insufficient to provide any help or solution.

    It would do a world of good if u can share a code snippet where u face such an issue.

    Regards, Parth Shah

    • Marked as answer by NisheethTak Friday, November 2, 2012 7:14 AM
    Wednesday, October 31, 2012 12:13 PM

All replies

  • Question
    Sign in to vote
    0
    Sign in to vote
    You will really have to give more information than that. When debugging, do you see what variable is set to null? If it comes from deeper within a devexpress component, you should try asking on their support forum. Though there you will also need to give more info, include a code sample at least.
    • Marked as answer by NisheethTak Friday, November 2, 2012 7:13 AM
    Wednesday, October 31, 2012 10:46 AM
  • Question
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    0
    Sign in to vote

    Hi Nisheeth,

    The information u have provided in insufficient to provide any help or solution.

    It would do a world of good if u can share a code snippet where u face such an issue.

    Regards, Parth Shah

    • Marked as answer by NisheethTak Friday, November 2, 2012 7:14 AM
    Wednesday, October 31, 2012 12:13 PM