I am binding a grid to a collection within an object and now get the following stack trace immediately I press Insert or click the 'click to add new row' area of the grid. I am using V 2010.1. Before I start debugging in earnest, please let me know what you think of this trace, which includes a reference to "c:\Builds\WPF_Scrum\..." which is odd, there being no such folder on my PC.
The application uses NHibernate and of course I would not expect you to advise on its behaviour. But, any pointers would be gratefully received!

James.
[stack trace start]
System.NotImplementedException was unhandled by user code
  Message="This is a DynamicProxy2 error: the interceptor attempted to 'Proceed' for a method without a target,
for example, an interface method or an abstract method"
  Source="DynamicProxyGenAssembly2"
  StackTrace:
       at IncidentParameterProxyfd420842db7242d3b17261419bc48c98.Invocationadd_PropertyChanged_1.InvokeMethodOnTarget()
       at Castle.DynamicProxy.AbstractInvocation.Proceed()
       at Castle.Core.Interceptor.StandardInterceptor.Intercept(IInvocation invocation)
       at Castle.DynamicProxy.AbstractInvocation.Proceed()
       at IncidentParameterProxyfd420842db7242d3b17261419bc48c98.add_PropertyChanged(PropertyChangedEventHandler value)
       at System.ComponentModel.PropertyChangedEventManager.StartListening(Object source)
       at System.ComponentModel.PropertyChangedEventManager.PrivateAddListener(INotifyPropertyChanged source, IWeakEventListener listener, String propertyName)
       at System.ComponentModel.PropertyChangedEventManager.AddListener(INotifyPropertyChanged source, IWeakEventListener listener, String propertyName)
       at MS.Internal.Data.PropertyPathWorker.ReplaceItem(Int32 k, Object newO, Object parent)
       at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue, Boolean isASubPropertyChange)
       at MS.Internal.Data.PropertyPathWorker.AttachToRootItem(Object rootItem)
       at MS.Internal.Data.ClrBindingWorker.AttachDataItem()
       at System.Windows.Data.BindingExpression.Activate(Object item)
       at System.Windows.Data.BindingExpression.AttachToContext(AttachAttempt attempt)
       at System.Windows.Data.BindingExpression.AttachOverride(DependencyObject target, DependencyProperty dp)
       at System.Windows.Data.BindingExpressionBase.Attach(DependencyObject target, DependencyProperty dp)
       at System.Windows.Data.BindingExpressionBase.OnAttach(DependencyObject d, DependencyProperty dp)
       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.Data.BindingOperations.SetBinding(DependencyObject target, DependencyProperty dp, BindingBase binding)
       at Telerik.Windows.Controls.GridViewBoundColumnBase.SetBindingIfNeeded(DependencyObject target, DependencyProperty property) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Columns\GridViewBoundColumnBase.cs:line 230
       at Telerik.Windows.Controls.GridView.GridViewCell.UpdateValue() in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 1044
       at Telerik.Windows.Controls.GridView.GridViewCell.OnColumnChanged(GridViewColumn oldColumn, GridViewColumn newColumn) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCell.cs:line 1035
       at Telerik.Windows.Controls.GridView.GridViewCellBase.set_Column(GridViewColumn value) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Cells\GridViewCellBase.cs:line 236
       at Telerik.Windows.Controls.GridView.DataCellsPresenter.PrepareContainerForItemOverride(DependencyObject element, Object item) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\DataCellsPresenter.cs:line 258
       at System.Windows.Controls.ItemsControl.MS.Internal.Controls.IGeneratorHost.PrepareItemContainer(DependencyObject container, Object item)
       at System.Windows.Controls.ItemContainerGenerator.System.Windows.Controls.Primitives.IItemContainerGenerator.PrepareItemContainer(DependencyObject container)
       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.InsertContainer(Int32 childIndex, UIElement container, Boolean isRecycled) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 866
       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.InsertNewContainer(Int32 childIndex, UIElement container) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 785
       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.AddContainerFromGenerator(Int32 childIndex, UIElement child, Boolean newlyRealized) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 768
       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.GenerateChild(IItemContainerGenerator generator, Size constraint, GridViewColumn column, Int32& childIndex, Size& childSize) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 680
       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.GenerateChildren(IItemContainerGenerator generator, Int32 startIndex, Int32 endIndex, Size constraint) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 720
       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.GenerateAndMeasureChildrenForRealizedColumns(Size constraint) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 209
       at Telerik.Windows.Controls.GridView.GridViewCellsPanel.MeasureOverride(Size constraint) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 86
       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.ItemsPresenter.MeasureOverride(Size constraint)
       at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
       at System.Windows.UIElement.Measure(Size availableSize)
       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)
       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.ContextLayoutManager.UpdateLayout()
       at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
       at System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork()
       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, Boolean isSingleParameter)
       at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
  InnerException: 
[stack trace end]

Hello All,

I have to perform a few hacks and implement a custom AccessKey registration (like seen here), to ensure that the IsDefault and IsCancel buttons embeded in a RadWindow work properly, but it is taking its toll and created a very convoluted development experience.  It would be helpful if Telerik provided some wisdome on how to customize the RadWindow so it handles AccessKey scops on it's own.  Perhaps there is some feature already included that I'm not aware of?

- Rashad Rivera
  www.omegusprime.com

Is extending the RadRichTextBox object model a scenario that is technically possible? What I am talking about is creating new inline objects in order to enable embedding other content but images. For example I would like to add the ability to introduce a video and audio element based on the MediaPlayer control etc.
.

Hello all,
I have a problem using RadGridView as i want a very customized behavior.
Here is the structure i have. I have a RadGridView that is bound to an ObservableCollection.This collection holds objects that implement INotifyPropertyChanged in order for the UI to be notified whenever a property value changes in any object.
What i want to do is whenever any property value changes i would do some checking and accordingly change the RadGridView cell background color for a couple of seconds then set it back again to it's original color (flashing effect).
The main problem is that I cannot access the RadGridView cells from the code behind.
I tried some trials but i had a problem in each of them..

I made my own style selector where i made my checking a return the desired style, and assigned this style selector column CellStyleSelector property (Xaml). But then, i am able to change the cell background color but cannot set it back to it's original.

I placed my whole logic in a ListBox and then place it inside the RadGridView as a DataTemplate in GridViewColumn. But again i'm not able to access the list box from the code behind.

I feel like I'm close to the solution but there must be something missing.
Could you help me in that??

Thank you very much for your help in advance.

Hello Telerik team,

Could you please let me know how can we instantiate the row indicator column of WPF telerik radgrid.
I need to add a context menu to the row indicator column.


Thanks,
Regards,
Mausami

Hi,
I am usinf RadExpander control to expand and collapse the panel. i have added this expander control in canvas with height and width set to Auto. but on expand and collapse the height of that convas is not getting changed.

Could you please help me

Thanks,
Nikhil 

I want to turn off opacity animation when I set IsBusy =  true;
How to achieve this?
The problem is that I don't use  separate thread with my busyIndicator, and I don't want to use another threads.
When I put:
IsBusy =  true;
//long process here
IsBusy =  false;

The busy indicator don't appear. I think it may be caused by opacity animation.

Hello,

I've recently encountered a problem with the GridView where I get an InvalidOperationException when the grid is refreshing after changing the number of child elements on an item that already has elements and is expanded and visible within the GridView.  It doesn't matter whether I'm increasing or decreasing the number of child elements. My stack trace is as follows :


Has anybody run into any similar sounding problems with the GridView ?

Edit: Upon further investigation, I've found that this problem arises in Extended selection mode, Single works just fine. For a bit of clarification, the object with the collection of child elements that's changing must be expanded in the GridView.

I have a problem with canceling edit mode in teleriks RadGridView. After inovking CancelRowEdit command for my radgridview edit mode stops, but item in row does not return to previous values...

Thanks in advance
Mehri

'System.Windows.Documents.Hyperlink' is not a Visual or Visual3D.