Grid Crash after adding dynamic columns

[Paul Gallen]

Hi
I added three additional columns to the grid, then bound to my datasource (Nothwinds ado entities)

 Public Sub New()
        MyBase.New()

        Me.InitializeComponent()

        ' Insert code required on object creation below this point.

        gv1.AutoGenerateColumns = False
        Dim detailDefinition As GridViewTableDefinition = New GridViewTableDefinition()
        detailDefinition.Relation = New PropertyRelation("Orders")
        gv1.TableDefinition.ChildTableDefinitions.Add(detailDefinition)

        Dim gvdc As GridViewDataColumn

        gvdc = New GridViewDataColumn
        gvdc.HeaderText = "One"
        gvdc.EditorSettings = New ComboBoxEditorSettings
        gv1.Columns.Add(gvdc)

        gvdc = New GridViewDataColumn
        gvdc.HeaderText = "Two"
        gvdc.EditorSettings = New CheckBoxEditorSettings
        gv1.Columns.Add(gvdc)

        gvdc = New GridViewDataColumn
        gvdc.HeaderText = "Three"
        gvdc.EditorSettings = New DatePickerEditorSettings
        gv1.Columns.Add(gvdc)

        CustomerList = (From c In _cx.Customers.Include("Orders")).ToList
        Me.gv1.ItemsSource = CustomerList

        _CurrentCustomer = CustomerList(0)
    End Sub

clicking on and off column "Three" (DatePickerEditor), after the grid has rendered, causes this exception

System.Reflection.TargetInvocationException was unhandled
  Message="Exception has been thrown by the target of an invocation."
  Source="mscorlib"
  StackTrace:
       at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
       at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
       at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
       at System.Delegate.DynamicInvokeImpl(Object[] args)
       at System.Windows.RoutedEventArgs.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 e)
       at Telerik.Windows.Controls.GridView.GridViewCell.RaiseEventEditEnded() in r:\WPF_Scrum\WPF_Team\Sources\Development\WPF\GridView\GridView\Cells\GridViewCell.cs:line 1103
       at Telerik.Windows.Controls.GridView.GridViewCell.CommitEdit() in r:\WPF_Scrum\WPF_Team\Sources\Development\WPF\GridView\GridView\Cells\GridViewCell.cs:line 710
       at Telerik.Windows.Controls.GridView.GridViewCell.TryCommitEdit() in r:\WPF_Scrum\WPF_Team\Sources\Development\WPF\GridView\GridView\Cells\GridViewCell.cs:line 887
       at Telerik.Windows.Controls.GridView.GridViewCell.HandleLostFocus() in r:\WPF_Scrum\WPF_Team\Sources\Development\WPF\GridView\GridView\Cells\GridViewCell.cs:line 875
       at Telerik.Windows.Controls.GridView.GridViewCell.OnLostFocus(RoutedEventArgs e) in r:\WPF_Scrum\WPF_Team\Sources\Development\WPF\GridView\GridView\Cells\GridViewCell.cs:line 640
       at System.Windows.UIElement.IsFocused_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
       at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
       at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, OperationType operationType)
       at System.Windows.DependencyObject.ClearValueCommon(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata)
       at System.Windows.DependencyObject.ClearValue(DependencyPropertyKey key)
       at System.Windows.Input.FocusManager.OnFocusedElementChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
       at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
       at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, OperationType operationType)
       at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, OperationType operationType, Boolean isInternal)
       at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
       at System.Windows.Input.FocusManager.SetFocusedElement(DependencyObject element, IInputElement value)
       at System.Windows.Input.KeyboardNavigation.UpdateFocusedElement(DependencyObject focusTarget)
       at System.Windows.FrameworkElement.OnGotKeyboardFocus(Object sender, KeyboardFocusChangedEventArgs e)
       at System.Windows.Input.KeyboardFocusChangedEventArgs.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.KeyboardDevice.ChangeFocus(DependencyObject focus, Int32 timestamp)
       at System.Windows.Input.KeyboardDevice.TryChangeFocus(DependencyObject newFocus, IKeyboardInputProvider keyboardInputProvider, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)
       at System.Windows.Input.KeyboardDevice.Focus(DependencyObject focus, Boolean askOld, Boolean askNew)
       at System.Windows.Input.KeyboardDevice.Focus(IInputElement element)
       at System.Windows.Input.Keyboard.Focus(IInputElement element)
       at Telerik.Windows.Controls.GridView.GridViewCell.GridViewCell_MouseLeftButtonUp(Object sender, MouseButtonEventArgs e) in r:\WPF_Scrum\WPF_Team\Sources\Development\WPF\GridView\GridView\Cells\GridViewCell.cs:line 515
       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.OnMouseUpThunk(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 WpfApplication2.App.Main() in C:\Examples\wpfTelerik\WpfApplication2\obj\Debug\App.g.vb:line 62
       at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       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: System.Reflection.TargetInvocationException
       Message="Exception has been thrown by the target of an invocation."
       Source="mscorlib"
       StackTrace:
            at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
            at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
            at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
            at System.Delegate.DynamicInvokeImpl(Object[] args)
            at System.Windows.RoutedEventArgs.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 e)
            at Telerik.Windows.Controls.GridView.GridViewRow.HandleValueChangedAfterEdit(RadRoutedEventArgs editEventArgs, RecordsChangeListener changeListener) in r:\WPF_Scrum\WPF_Team\Sources\Development\WPF\GridView\GridView\Rows\GridViewRow.cs:line 534
            at Telerik.Windows.Controls.GridView.GridViewRow.Cell_EditCommitted(Object sender, CellRoutedEventArgs e) in r:\WPF_Scrum\WPF_Team\Sources\Development\WPF\GridView\GridView\Rows\GridViewRow.cs:line 554
       InnerException: System.ArgumentNullException
            Message="Value cannot be null.\r\nParameter name: fieldName"
            Source="Telerik.Windows.Controls.GridView"
            ParamName="fieldName"
            StackTrace:
                 at Telerik.Windows.Controls.GridView.GridViewDataControl.DataError(Object sender, DataErrorEventArgs args) in r:\WPF_Scrum\WPF_Team\Sources\Development\WPF\GridView\GridView\GridViewDataControl.cs:line 929
            InnerException:

Can you advise?


Thanks


P

[Stefan Dobrev]

Hi Paul Gallen,

I was able to reproduce your problem. It occurs because you are adding GridViewDataColumn, which requires the column to be bound to a property of the data source. In your sample you should specify UniqueName, DataMemberPath or DataMemberBinding for your dynamically generated columns.

Hope this helps.

Regards,
Stefan Dobrev
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Check out the tips for optimizing your support resource searches.

[Paul Gallen]

Thanks Stefan

These columns are not databound, therefore could you tell me what I need to set. can your Grid handle unbound columns?


Thanks


P

[Vlad]

Hello Paul,

Indeed the grid can handle unbound columns (using GridViewColumn instead GridVIewDataColumn) however you will need our latest build.

Please open a formal support ticket and we will send you latest WPF controls build.

Kind regards,
Vlad
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Check out the tips for optimizing your support resource searches.