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Exception thrown when DataBound item changed
I have a RadPropertyWindow where the selected item is determined by DataBinding:

        <telerik:RadPropertyGrid x:Name="_radPropertyGrid" Grid.Row="2" Item="{Binding SelectedElement}" />

When the SelectedElement is changed from NULL to an element, it works as expected.

Then, when this element changes again, an exception gets thrown.


System.ArgumentOutOfRangeException was unhandled
  Message=Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
  Source=mscorlib
  ParamName=index
  StackTrace:
       at System.ThrowHelper.ThrowArgumentOutOfRangeException()
       at System.Collections.Generic.List`1.get_Item(Int32 index)
       at System.Collections.ObjectModel.Collection`1.get_Item(Int32 index)
       at Telerik.Windows.Controls.Data.PropertyGrid.PropertyDefinitionCollection.RemoveItem(Int32 index) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\Data\PropertyGrid\PropertyDefinitionCollection.cs:line 55
       at System.Collections.ObjectModel.Collection`1.RemoveAt(Int32 index)
       at Telerik.Windows.Controls.RadPropertyGrid.ClearAutoGeneratedPropertyDefinitions() in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\Data\PropertyGrid\RadPropertyGrid.cs:line 325
       at Telerik.Windows.Controls.RadPropertyGrid.GeneratePropertyDefinitions() in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\Data\PropertyGrid\RadPropertyGrid.cs:line 291
       at Telerik.Windows.Controls.RadPropertyGrid.OnItemPropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\Data\PropertyGrid\RadPropertyGrid.cs:line 251
       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, Boolean coerceWithCurrentValue, OperationType operationType)
       at System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp)
       at System.Windows.Data.BindingExpressionBase.Invalidate(Boolean isASubPropertyChange)
       at System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)
       at System.Windows.Data.BindingExpression.ScheduleTransfer(Boolean isASubPropertyChange)
       at MS.Internal.Data.ClrBindingWorker.NewValueAvailable(Boolean dependencySourcesChanged, Boolean initialValue, Boolean isASubPropertyChange)
       at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue, Boolean isASubPropertyChange)
       at MS.Internal.Data.ClrBindingWorker.OnSourcePropertyChanged(Object o, String propName)
       at MS.Internal.Data.PropertyPathWorker.System.Windows.IWeakEventListener.ReceiveWeakEvent(Type managerType, Object sender, EventArgs e)
       at System.Windows.WeakEventManager.DeliverEventToList(Object sender, EventArgs args, ListenerList list)
       at System.ComponentModel.PropertyChangedEventManager.OnPropertyChanged(Object sender, PropertyChangedEventArgs args)
       at NavigationPathEditor.ThreadSafeNotifyPropertyChanged.<>c__DisplayClass3.<NotifyPropertyChanged>b__1() in C:\Development\PlayArea\NavigationPathEditor\NavigationPathEditor\ThreadSafeNotifyPropertyChanged.cs:line 39
       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.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
       at System.Threading.ExecutionContext.runTryCode(Object userData)
       at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
       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.InvokeImpl(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.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
       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 NavigationPathEditor.App.Main() in C:\Development\PlayArea\NavigationPathEditor\NavigationPathEditor\obj\x86\Debug\App.g.cs:line 0
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly 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, Boolean ignoreSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 

PropertyGrid
Andrew
Top achievements
Rank 1
Iron
Iron
 answered on 02 Feb 2012
1 answer
166 views
How to find a floating RadPane?

This works well for docked RadPanes:

RadPane realPane = null;
IEnumerable<RadPane> childPanes = MainDockingManager01.ChildrenOfType<RadPane>();
 
foreach (var r in childPanes)
    if ((r as RadPane).Title.Equals(theName))
    {
        realPane = r;
        break;
    }
return realPane;

However the enumeration does not contain the target RadPane when the
Pane has been un-docked and is floating.  As a matter of fact, if there is only
one RadPane present, the enumeration of MainDockingManager01.ChildrenOfType<RadPane>
returns an empty set.

How do I find a floating child?  Do I search something other than MainDockingManager01?

Thanks in advance!

Docking
Mike5
Top achievements
Rank 1
 answered on 02 Feb 2012
1 answer
63 views
setting styles and colors
hi guys,

I am having some mysterious problem.
on my radwindow I am using sime wpf textboxes and some other control and i am
settings these control's colors and styles in xaml but it does effect only in designer
at run time it does not effect.

what to do ?

reagrds,
Tauseef.
General Discussions
Vanya Pavlova
Telerik team
 answered on 02 Feb 2012
2 answers
244 views
Issue with RadGridView and DynamicObject
Hi,

I'm using WPF controls 2011.3.1220.40, and using a MVVM pattern with a ViewModel that uses DynamicObject to expose Model properties to the View.

Displaying dynamic property data in the gridview works fine, grouping on one of the real ViewModel properties works fine.  But when the user tries to group by one of the dynamic property columns, a null reference exception is thrown (stack trace below).  After the user clicks the grouping icon, TryGetMember is never called.

I've created a small project to demonstrate the issue, but could not upload a zip file.  So below I've pasted a .xaml and it's codebehind.   To see the problem, try grouping on the "One" column (works), and the "Two" column (exception).

I'm really hoping Telerik folks can look into this issue asap.

Thanks

MainWindow.xaml:
<Window
        x:Class="TestingGridViewControl.MainWindow"
        DataContext='{Binding RelativeSource={RelativeSource Mode=Self}}'
        >
    <Grid>
        <telerik:RadGridView ItemsSource='{Binding Items}' AutoGenerateColumns='False'
            EnableColumnVirtualization='True' IsReadOnly='True' >
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn Header='One' DataMemberBinding='{Binding One}' />
                <telerik:GridViewDataColumn Header='Two' DataMemberBinding='{Binding Two}' />
                <telerik:GridViewDataColumn Header='Three' DataMemberBinding='{Binding Three}' />
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>
 
    </Grid>
     
</Window>

MainWindow.xaml.cs:
using System.Collections.ObjectModel;
using System.Dynamic;
using System.Reflection;
using System.Windows;
 
namespace TestingGridViewControl
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            SetData();
        }
 
        private void SetData()
        {
            Items = new ObservableCollection<ViewModel>
                        {
                            new ViewModel(new Model { Two = "2",  Three = "3",  }) {One = "1"},
                            new ViewModel(new Model { Two = "22", Three = "33", }) {One = "11"},
                        };
        }
 
        public ObservableCollection<ViewModel> Items { get; set; }
    }
 
    public class ViewModel : DynamicObject
    {
        private Model _model;
 
        public ViewModel(Model model)
        {
            _model = model;
        }
 
        public string One { get; set; }
 
        public override bool TryGetMember(GetMemberBinder binder, out object result)
        {
            MethodInfo getMethod;
 
            // If VM has this property, VM takes precedence. 
            // Otherwise, check for property in the Model.
            var vmPropInfo = GetType().GetProperty(binder.Name);
            if (vmPropInfo != null && vmPropInfo.CanRead)
            {
                getMethod = vmPropInfo.GetGetMethod();
                result = getMethod.Invoke(this, null);
                return true;
            }
 
            var modelPropInfo = typeof(Model).GetProperty(binder.Name);
            if (modelPropInfo != null && modelPropInfo.CanRead)
            {
                getMethod = modelPropInfo.GetGetMethod();
 
                result = getMethod.Invoke(_model, null);
                return true;
            }
 
            result = null;
            return false;
 
        }
 
        public override bool TrySetMember(SetMemberBinder binder, object value)
        {
            MethodInfo setMethod;
 
            var vmPropInfo = GetType().GetProperty(binder.Name);
            if (vmPropInfo != null && vmPropInfo.CanWrite)
            {
                setMethod = vmPropInfo.GetSetMethod();
                setMethod.Invoke(this, new[] { value });
                return true;
            }
 
            var modelPropInfo = typeof(Model).GetProperty(binder.Name);
            if (modelPropInfo != null && modelPropInfo.CanRead)
            {
                setMethod = modelPropInfo.GetSetMethod();
                setMethod.Invoke(_model, new[] { value });
                return true;
            }
 
            return false;
        }
    }
 
    public class Model
    {
        public string Two { get; set; }
        public string Three { get; set; }
    }
}




----- Main Exception -----
Class: System.NullReferenceException
Message: Object reference not set to an instance of an object.
StackTrace:
   at Telerik.Windows.Controls.GridView.FilterEditorFactory.CreateEditor(Type type) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Filtering\FilterEditorFactory.cs:line 55
   at Telerik.Windows.Controls.GridViewBoundColumnBase.CreateFieldFilterEditor() in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Columns\GridViewBoundColumnBase.Filtering.cs:line 106
   at Telerik.Windows.Controls.GridView.FilteringControl.CreateFieldFilterEditor(GridViewBoundColumnBase column) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Filtering\FilteringControl.cs:line 268
   at Telerik.Windows.Controls.GridView.FilteringControl.PrepareFieldFilters(GridViewBoundColumnBase column) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Filtering\FilteringControl.cs:line 256
   at Telerik.Windows.Controls.GridView.FilteringControl.Prepare(GridViewBoundColumnBase column) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Filtering\FilteringControl.cs:line 247
   at Telerik.Windows.Controls.GridView.FilteringDropDown.PrepareFilteringControl() in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Filtering\FilteringDropDown.cs:line 266
   at Telerik.Windows.Controls.GridView.FilteringDropDown.OnDropDownPopupOpened(Object sender, EventArgs e) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Filtering\FilteringDropDown.cs:line 365
   at System.Windows.FrameworkElement.RaiseClrEvent(EventPrivateKey key, EventArgs args)
   at System.Windows.Controls.Primitives.Popup.OnOpened(EventArgs e)
   at System.Windows.Controls.Primitives.Popup.CreateWindow(Boolean asyncCall)
   at System.Windows.Controls.Primitives.Popup.OnIsOpenChanged(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, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
   at System.Windows.Controls.Primitives.Popup.set_IsOpen(Boolean value)
   at Telerik.Windows.Controls.GridView.FilteringDropDown.OnIsDropDownOpenChanged(Boolean oldValue, Boolean newValue) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Filtering\FilteringDropDown.cs:line 129
   at Telerik.Windows.Controls.GridView.FilteringDropDown.OnIsDropDownOpenChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Filtering\FilteringDropDown.cs:line 75
   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, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
   at Telerik.Windows.Controls.GridView.FilteringDropDown.set_IsDropDownOpen(Boolean value) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Filtering\FilteringDropDown.cs:line 64
   at Telerik.Windows.Controls.GridView.FilteringDropDown.OnDropDownButtonClick(Object sender, RoutedEventArgs e) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Filtering\FilteringDropDown.cs:line 378
   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 System.Windows.Controls.Primitives.ButtonBase.OnClick()
   at System.Windows.Controls.Primitives.ToggleButton.OnClick()
   at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
   at System.Windows.UIElement.OnMouseLeftButtonUpThunk(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.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.RaiseTrustedEvent(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, WindowMessage 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, Int32 numArgs)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
GridView
Eric
Top achievements
Rank 1
 answered on 02 Feb 2012
2 answers
129 views
Grid view theme checkbox
We have a Gridview used with column one as the checkbox for selection. ON mouse hover of the checkbox the theme color looks blue which is as desired. But when the checkbox is selected, it turns grey or it does not attain the theme feature. How do we make it theme specific color on selection?
GridView
Bhakti
Top achievements
Rank 1
 answered on 02 Feb 2012
1 answer
147 views
Export to image in chartview
Will the upcomming release of chartview support exporting the chart to image lik the chart does? I´m considering switching to chartview because of performance issues with chart, but need to know whether export will be supported.

ChartView
Tsvetie
Telerik team
 answered on 02 Feb 2012
3 answers
81 views
AppointmentCalendarExporter bug for Every X Days
Hi, 

I use the AppointmentCalendarExporter behind a WCF service to produce an ICal stream. This is then imported as a subscription to Outlook. 

When an appointment has a recurrence pattern that is every 2 days (See the attached example). it produces the following output (just for that appointment)

BEGIN:VEVENT
DTSTART;TZID=E. Australia Standard Time:20111225T050000
DTEND;TZID=E. Australia Standard Time:20111225T120000
SUMMARY:Test recurrence
UID:a49ee7e8-7813-4348-b7d7-0fdba1934521
IMPORTANCE:None
RRULE:FREQ=DAILY;UNTIL=20120103T020000Z;INTERVAL=2;BYDAY=SU,MO,TU,WE,TH,FR,
 SA
END:VEVENT

However, this can't be imported into Outlook. There is a conflict in the recurrence rule, between FREQ and BYDAY. If I remove the BYDAY, then it gets imported ok.

I think this is a bug. 

Phil
ScheduleView
Rosi
Telerik team
 answered on 02 Feb 2012
1 answer
108 views
Find Control in Edit Ending event
I have a RadDataForm and I have added a RadRichTextEditor via the autogeneratingfield event. I set the RadRichTextEditor to read only. My question is that during the edit ending event how can I find my RadRichTextEditor and unset the read only?
DataForm
Pavel Pavlov
Telerik team
 answered on 02 Feb 2012
4 answers
208 views
Exception deep in telerik code when entering value and pressing enter
When editing a cell and pressing Enter I get exception below. Of course I might do something that most people don't but I can't really see what it should be. The exception is rather specific below -- would you consider handling this situation with a bit more information to the developer? I'm available for trying out unofficial builds if that could be helpful for you.

I'm currently on the latest release.

Thanks,
Anders, Denmark

System.NullReferenceException was unhandled
  Message=Object reference not set to an instance of an object.
  Source=Telerik.Windows.Controls.GridView
  StackTrace:
       at Telerik.Windows.Controls.GridView.GridViewCell.SetCellElement() in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 508
       at Telerik.Windows.Controls.GridView.GridViewCell.HideEditor() in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 744
       at Telerik.Windows.Controls.GridView.GridViewCell.ToggleEditor() in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 1057
       at Telerik.Windows.Controls.GridView.GridViewDataControl.OnCellEditModeChanged(GridViewCell cell, Boolean newIsInEditMode) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Editing.cs:line 396
       at Telerik.Windows.Controls.GridView.GridViewCell.IsInEditModeChanged(DependencyObject target, DependencyPropertyChangedEventArgs e) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 1045
       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, Boolean coerceWithCurrentValue, OperationType operationType)
       at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
       at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
       at Telerik.Windows.Controls.GridView.GridViewCell.set_IsInEditMode(Boolean value) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 305
       at Telerik.Windows.Controls.GridView.GridViewCell.RaiseCellEditEndedEvent(GridViewEditAction editAction) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 1156
       at Telerik.Windows.Controls.GridView.GridViewDataControl.PerformCellEditEnded(GridViewCell currentCell) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Editing.cs:line 108
       at Telerik.Windows.Controls.GridView.GridViewDataControl.CommitCellEdit(GridViewCell currentCell, Boolean isLeavingRow) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Editing.cs:line 69
       at Telerik.Windows.Controls.GridView.GridViewDataControl.CommitEdit() in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Editing.cs:line 1011
       at Telerik.Windows.Controls.GridView.GridViewDataControl.OnCommitEditCommand(Object sender, ExecutedRoutedEventArgs e) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Commands.cs:line 289
       at System.Windows.Input.CommandBinding.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
       at System.Windows.Input.CommandManager.ExecuteCommandBinding(Object sender, ExecutedRoutedEventArgs e, CommandBinding commandBinding)
       at System.Windows.Input.CommandManager.FindCommandBinding(CommandBindingCollection commandBindings, Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
       at System.Windows.Input.CommandManager.FindCommandBinding(Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
       at System.Windows.Input.CommandManager.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
       at System.Windows.UIElement.OnExecutedThunk(Object sender, ExecutedRoutedEventArgs e)
       at System.Windows.Input.ExecutedRoutedEventArgs.InvokeEventHandler(Delegate genericHandler, Object target)
       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.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated)
       at System.Windows.Input.RoutedCommand.Execute(Object parameter, IInputElement target)
       at Telerik.Windows.Controls.GridView.GridViewDataControl.ExecutePendingCommand() in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.Commands.cs:line 65
       at Telerik.Windows.Controls.GridView.GridViewDataControl.PendAndExecuteCommands(KeyEventArgs e) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.cs:line 4112
       at Telerik.Windows.Controls.GridView.GridViewDataControl.OnKeyDown(KeyEventArgs e) in c:\TB\117\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.cs:line 4085
       at System.Windows.UIElement.OnKeyDownThunk(Object sender, KeyEventArgs e)
       at System.Windows.Input.KeyEventArgs.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.RaiseTrustedEvent(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.HwndKeyboardInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawKeyboardActions actions, Int32 scanCode, Boolean isExtendedKey, Boolean isSystemKey, Int32 virtualKey)
       at System.Windows.Interop.HwndKeyboardInputProvider.ProcessKeyAction(MSG& msg, Boolean& handled)
       at System.Windows.Interop.HwndSource.CriticalTranslateAccelerator(MSG& msg, ModifierKeys modifiers)
       at System.Windows.Interop.HwndSource.OnPreprocessMessage(Object param)
       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.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
       at System.Windows.Interop.HwndSource.OnPreprocessMessageThunk(MSG& msg, Boolean& handled)
       at System.Windows.Interop.HwndSource.WeakEventPreprocessMessage.OnPreprocessMessage(MSG& msg, Boolean& handled)
       at System.Windows.Interop.ComponentDispatcherThread.RaiseThreadMessage(MSG& msg)
       at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
       at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
       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 Rap1D.Rap1D_WPF.App.Main() in C:\SVN\Rap1DGui\trunk\src\Rap1D_WPF\obj\x86\Debug\App.g.cs:line 0
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.nExecuteAssembly(RuntimeAssembly 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, Boolean ignoreSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException:
GridView
Anders
Top achievements
Rank 1
 answered on 02 Feb 2012
3 answers
167 views
editable GridViewDynamicHyperlinkColumn
I want users to be able to tab into a cell of a hyperlink column and edit the url when a row is in edit mode. Since the GridViewDynamicHyperlinkColumn is read-only, I thought I could subclass it to provide an edit textbox. But I can't override CanEdit because you've made it internal. Is there a reason for this? I've worked around it by subclassing GridViewBoundColumnBase and reimplementing stuff from the hyperlink column. If you could remove the internal specifier from CanEdit, it would help avoid unnecessary duplication.
GridView
Marc Roussel
Top achievements
Rank 2
 answered on 02 Feb 2012
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