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Grid Crash after adding dynamic columns

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GridView
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Paul Gallen
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Paul Gallen asked on 12 Feb 2009, 10:32 AM
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

3 Answers, 1 is accepted

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Stefan Dobrev
Telerik team
answered on 13 Feb 2009, 04:33 PM
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

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Paul Gallen
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answered on 13 Feb 2009, 05:27 PM
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
0
Vlad
Telerik team
answered on 17 Feb 2009, 06:18 AM
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

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Paul Gallen
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Stefan Dobrev
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Paul Gallen
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Vlad
Telerik team
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