Hi,

Sometimes when copy and paste diagram items, I get error says "An item with the same key has already been added."

Here is the call stack
==========================================================================================

System.ArgumentException was unhandled
  HResult=-2147024809
  Message=An item with the same key has already been added.
  Source=mscorlib
  StackTrace:
       at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
       at Telerik.Windows.Diagrams.Core.SerializationService.DeserializeItems(SerializationInfo serializationInfo, Boolean makeUnique)
       at Telerik.Windows.Controls.Diagrams.DataTransferService.HandleDiagramElementDrop(DataObject dataObject)
       at Telerik.Windows.Controls.Diagrams.DataTransferService.HandlePaste(DataObject dataObject, Action`1 action)
       at Telerik.Windows.Controls.RadDiagram.Paste()
       at Telerik.Windows.Controls.RadDiagram.OnPasteCommandExecuted(Object sender, ExecutedRoutedEventArgs e)
       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.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       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.Input.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated)
       at System.Windows.Input.CommandManager.TranslateInput(IInputElement targetElement, InputEventArgs inputEventArgs)
       at System.Windows.UIElement.OnKeyDownThunk(Object sender, KeyEventArgs e)
       at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       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.Input.InputManager.ProcessStagingArea()
       at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
       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.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
       at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
       at System.Windows.Interop.HwndSource.OnPreprocessMessageThunk(MSG& msg, Boolean& handled)
       at System.Windows.Interop.ComponentDispatcherThread.RaiseThreadMessage(MSG& msg)
       at System.Windows.Threading.Dispatcher.TranslateAndDispatchMessage(MSG& msg)
       at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
       at System.Windows.Application.RunInternal(Window window)
       at System.Windows.Application.Run()

========================================================

Thanks,

Ahmed

We have a RadPropertyGrid with its items being auto-generated.

How can I set Tooltips to the labels and/or to the editors being generated???

Tooltips should be set inside auto-generation 

If RadGridView has vertical scroll bar and I tab out the scroll viewer scrolls on its own.

I have 1 gridView and 2 buttons, I select a row on gridview and then hit tab,  the focus is on the button but the grid automatically scrolls.

<Grid DataContext="{StaticResource MyViewModel}">
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <telerik:RadGridView Name="playersGrid" 
ItemsSource="{Binding Players}" 
AutoGenerateColumns="False">
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Name}" TabStopMode="Skip"/>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Number}" TabStopMode="Skip"/>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Position}" TabStopMode="Skip"/>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Country}" TabStopMode="Skip"/>
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>

        <StackPanel Grid.Row="1" Orientation="Horizontal">
            <telerik:RadButton Name="Button1"
  Content="ScrollIntoView" 
  Click="Button1_Click"
  Margin="5"
  HorizontalAlignment="Left"/>
            <telerik:RadButton Name="Button2"
  Content="BringIndexIntoView" 
  Click="Button2_Click"
  Margin="5"
  HorizontalAlignment="Left"/>
        </StackPanel>
    </Grid>

I am using the newest version of telerik libraries, but on my ChartView controls are null values displayed as 0s so on LineChart lines are there evry time pointing to 0 where null value is avaiulable.

Is this the way it is supposed to work ? DoI have to use old version of Chart (RadChart) to have empty (null) vales properly displayed ?

Cheers,
Robert

There are descriptors for Categorical, Scatter, and Polar. What about for RangeSeries?

Thanks - Mitch

Hi,

I want to use the default drag/no-drag cursors on the RadTreeListView control to keep it consistent with other controls. However I see that RadTreeListView implements OnGiveFeedback event and always sets the cursor to an 'Arrow' and also sets e.Handled to true. Firstly, the cursor here should be set based on DragDropEffects and should not be forced to Arrow. Secondly, e.Handled should not be set to true as one can never add a handler the OnGiveFeedback event which I can use to change the arrow. Attached is a screenshot..

RadTreeListView.cs

Hi,

we want to bind a RadGridView to a collection of objects that implement DynamicObject. However, we don't want to bind to the dynamic properties, but only classical properties (e.g. the Name property in the following example).


However, the RadGridView only tries to bind to the dynamic members and throws exceptions if the dynamic member is not found. It does not even check if there is a normal property with the same name. This affects not only binding, but also sorting, grouping and filtering.
The typical behavior in WPF (e.g. when using a binding) and C# (when using the dynamic keyword) is to check for normal properties first! This should be the same in the RadGridView.

Alex

What's the easiest way to style the border of the WPF DropDownButton popup?

I was reading this thread:

http://www.telerik.com/community/forums/wpf/gridview/column-chooser.aspx

Can you please post a working wpf example since I cannot get the code to compile when I replace the rad context menu with the standard windows context menu. Can you please post a working copy using the wpf rad grid view for all of us to use?

Bill

I have a RadGridView with MultiSelect turned on. When this Grid is instantiated, I need to select rows that are determined from a List passed into the ViewModel. Any ideas on how to do this?  The "SelectedItems" property of the RadGridView is readonly and cannot be set via markup.

Thank you!