I am getting a pretty tough error that is coming from ItemsControlExtensions used by the TileList control. I get this error when I run the my application using Narrator.

I found an article about this on StackOverflow where somebody encountered this issue on some custom controls they had in their own solution that caused the error. But in my case, I am using Telerik. So I am kind of stuck unless Telerik fixes it.



Here is the link to the stack over flow find.



http://stackoverflow.com/questions/16245732/nullreferenceexception-from-presentationframework-dll



All I am trying to do is launch the app. The app uses a TileList control as well as a RadAutoCompleteBox, RadComboBox, and RadGridView.



When I run the app on Windows 8 I get two errors when the application starts:



First Error:

Framework Version: v4.0.30319

Description: The process was terminated due to an unhandled exception.

Exception Info: System.NullReferenceException

Stack:

   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)

   at System.Windows.Threading.DispatcherOperation.InvokeImpl()

   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)

   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)

   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)

   at System.Windows.Threading.DispatcherOperation.Invoke()

   at System.Windows.Threading.Dispatcher.ProcessQueue()

   at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)

   at MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)

   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object)

   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)

   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)

   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32)

   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr)

   at MS.Win32.UnsafeNativeMethods.DispatchMessage(System.Windows.Interop.MSG ByRef)

   at MS.Win32.UnsafeNativeMethods.DispatchMessage(System.Windows.Interop.MSG ByRef)

   at System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame)

   at System.Windows.Application.RunInternal(System.Windows.Window)

   at System.Windows.Application.Run()

Error 2:

Faulting application name: xxx.exe, version: 1.0.0.0, time stamp: 0x525495d8

Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000

Exception code: 0xc0000005

Fault offset: 0x000007fe546901ab

Faulting process id: 0x1e5c

Faulting application start time: 0x01cec47f37ad9317

Faulting application path: C:\Users\xxx\Desktop\xxx\Sprint1b\xxx.exe

Faulting module path: unknown

Report Id: 7f5853ab-3072-11e3-bef0-5c514f0c8fb3

Faulting package full name:

Faulting package-relative application ID:

I am able to run the app on Windows 7 and Windows 8.1 BUT when I run narrator on Windows 8.1 I get this error:



   at Telerik.Windows.Controls.ItemsControlExtensions.<GetContainers>d__0`1.MoveNext() in c:\TB\221\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\Common\ItemsControlExtensions.cs:line 45

   at System.Linq.Enumerable.WhereEnumerableIterator`1.MoveNext()

   at Telerik.Windows.Automation.Peers.RadAutoCompleteBoxAutomationPeer.GetChildrenCore() in c:\TB\221\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\AutoCompleteBox\AutomationPeers\RadAutoCompleteBoxAutomationPeer.cs:line 173

   at System.Windows.Automation.Peers.AutomationPeer.EnsureChildren()

   at System.Windows.Automation.Peers.AutomationPeer.GetChildren()

   at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)

   at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)

   at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)

   at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)

   at System.Windows.Automation.Peers.AutomationPeer.ValidateConnected(AutomationPeer connectedPeer)

   at MS.Internal.Automation.ElementProxy.StaticWrap(AutomationPeer peer, AutomationPeer referencePeer)

   at System.Windows.Automation.Peers.AutomationPeer.RaiseAutomationEvent(AutomationEvents eventId)

   at System.Windows.Automation.Peers.SelectorAutomationPeer.RaiseSelectionEvents(SelectionChangedEventArgs e)

   at System.Windows.Controls.Primitives.Selector.SelectionChanger.End()

   at System.Windows.Controls.Primitives.Selector.SelectionChanger.SelectJustThisItem(ItemInfo info, Boolean assumeInItemsCollection)

   at System.Windows.Controls.Primitives.Selector.OnSelectedIndexChanged(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.SetCurrentValueInternal(DependencyProperty dp, Object value)

   at System.Windows.Controls.TabControl.OnGeneratorStatusChanged(Object sender, EventArgs e)

   at System.EventHandler.Invoke(Object sender, EventArgs e)

   at System.Windows.Controls.ItemContainerGenerator.SetStatus(GeneratorStatus value)

   at System.Windows.Controls.ItemContainerGenerator.Generator.System.IDisposable.Dispose()

   at System.Windows.Controls.Panel.GenerateChildren()

   at System.Windows.Controls.Primitives.TabPanel.MeasureOverride(Size constraint)

   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

   at System.Windows.UIElement.Measure(Size availableSize)

   at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)

   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged)

   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)

   at System.Windows.Controls.Grid.MeasureOverride(Size constraint)

   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

   at System.Windows.UIElement.Measure(Size availableSize)

   at System.Windows.Controls.Control.MeasureOverride(Size constraint)

   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

   at System.Windows.UIElement.Measure(Size availableSize)

   at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)

   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged)

   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)

   at System.Windows.Controls.Grid.MeasureOverride(Size constraint)

   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

   at System.Windows.UIElement.Measure(Size availableSize)

   at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)

   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged)

   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)

   at System.Windows.Controls.Grid.MeasureOverride(Size constraint)

   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

   at System.Windows.UIElement.Measure(Size availableSize)

   at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)

   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged)

   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)

   at System.Windows.Controls.Grid.MeasureOverride(Size constraint)

   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

   at System.Windows.UIElement.Measure(Size availableSize)

   at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)

   at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)

   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

   at System.Windows.UIElement.Measure(Size availableSize)

   at System.Windows.Controls.Border.MeasureOverride(Size constraint)

   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

   at System.Windows.UIElement.Measure(Size availableSize)

   at System.Windows.Controls.Control.MeasureOverride(Size constraint)

   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

   at System.Windows.UIElement.Measure(Size availableSize)

   at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)

   at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)

   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

   at System.Windows.UIElement.Measure(Size availableSize)

   at System.Windows.ContextLayoutManager.UpdateLayout()

   at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)

   at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()

   at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)

   at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)

   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)

Hi,

i have a urgent problem. We have to bind a observalcollection to a RadGridView. The Problem ist that this collection must be dynamic. For Example:
We have a tabel "Customer" with 20 columns and a table "purchasing" with 40 columns and so on... We have to create on runtime all the properties
and the collection!

Is there any standalone wpf example somewhere? All i found are Silverlight-Examples and these will not work with wpf...

Thanks a lot
Best Regards
MJ

Hello,

I upgraded from version 2012.3.1129.40 to 2013.3.1204.40.
In our application, we can drag a node from a treeview and drop it in a WinForms control.
With the old version of Telerik, we were able to change the TreeViewDragCue object from the WinForm control, like this:

Now with the new version, I'm using the recommended DragDropManager and DragDropPayloadManager objects, I tried this:

Unfortunately, the options object is always null.
Is there a way to change the TreeViewDragVisual object to give a feedback ?

Best regards,

I try created my first WPF Telerik WPF app.

I installed RAD Controls for Window.

In VS 2013 I chose File > New > Project >Telerik > Windows > C# RadControls WPF Application

In wizard I added ref to DLL Telerik.Windows.Controls, Telerik.Windows.Controls.Navigation and Telerik.Windows.Data.

VS creted WPF project but startup window is type of System.Windows.Window.

I hope that startup window will be type of RadWindow.

Ok, I deleted it and added Project > New Item > Telerik Scenarion > RadWindow.

VS added RadWindow. I changed startup URI in App.xaml.

Run WPF app and what happen :D

RadWindow is open in NavigationWindow :D 

I don’t understand why this magic happen. 

I know that in WPF in startup URI is on Page WPF automatically create NavigationWindow as host container for Page.

So where is problem?

Thanks for support

Hi, how can I set custom color for Doughnut3D slices ?

I've this code, and I want that "Slice 1" in Blue, "Slice 2" in Green, "Slice 3" in Red and "Slice 4" in Yellow. I need to use my personal colors.

// CODE
                    rcTimes.DefaultView.ChartArea.DataSeries.Clear();
                    rcTimes.DefaultView.ChartLegend.Header = string.Empty;
                    DataSeries serPT = new DataSeries();
                    Doughnut3DSeriesDefinition sdWorking = new Doughnut3DSeriesDefinition();
                    sdWorking.ShowItemLabels = false;
                    serPT.Definition = sdWorking;
                    DataPoint dp = new DataPoint(report.WorkingTime.TotalSeconds);
                    dp.LegendLabel = "Slice 1";
                    serPT.Add(dp);
                    dp = new DataPoint(report.WorkingExtraTime.TotalSeconds);
                    dp.LegendLabel = "Slice 2";
                    serPT.Add(dp);
                    dp = new DataPoint(report.PauseTime.TotalSeconds);
                    dp.LegendLabel = "Slice 3";
                    serPT.Add(dp);
                    dp = new DataPoint(report.AlarmTime.TotalSeconds);
                    dp.LegendLabel = "Slice 4";
                    serPT.Add(dp);
                    rcTimes.DefaultView.ChartArea.DataSeries.Add(serPT);

Hi,

I am using the DisplayIndex property on a RadGridView to set the column order in runtime (through databinding). The problem is that I receive an ArgumentOutOfRangeException when my window is opened.

The XAML looks like the following:



I've verified that I do get a callback to my property methods in the ViewModel. If I set the DisplayIndex to a static value in the XAML (i.e. DisplayIndex="3") works fine.

Why doesn't this work with data binding?

Details:
.NET version: 4.5
Telerik version. 2013.Q1

Would really appreciate a solution to this, thanks!

Hi!
The behaviour when the child dialog window blinks, when user clicks on currenlty inactive parent window is usual for regular non-telerik Window control.
Unfortunately, RadWindow doesn't blink, and our customers have noticed that. How do I achieve such behaviour?
Thank you!

I have the following XAML:


when i focus the NumericUpDown field and press left or right arrow, the underlying Number property is being set.
Why?
The value did not change. And also in case of a RadWatermarkTextBox I do not observe such a behavior.

Hi,

is it possible to set a fix range where Appointments could be placed? Example:

Our working day is form 07:00 am to 06:00 pm. Now I have an Appointment from 4pm to 05:30pm and I want to Drag&Drop this Appointment one
our in the future. Normally it is 05:00pm to 06:30pm, but our working day ends on 06:00pm, now I want to switch to the next working day an start on
07:00am.

Is this possible?

Thanks
Best Regards
Rene

 I am developing an application in which I require drag drop between two tree which a condition that
1. When child node is dragged , it needs to check if the Parent Node for that child is present in the Target Treeview,
    if (present)
     // add the child within that parent node
    else
     // Add the parent node and then the child node.