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RichTextBox in a RadTreeListView

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TreeListView

This is a migrated thread and some comments may be shown as answers.

Prabhu asked on 19 Jan 2012, 12:16 PM

Hi,

I'm trying to use a RichTextBox in a RadTreeListView. Below is the xaml

<telerik:RadTreeListView Grid.Row="1"

HorizontalAlignment="Stretch"

VerticalAlignment="Stretch"

x:Name="RTLView"

AutoGenerateColumns="False"

IsSynchronizedWithCurrentItem="True"

IsReadOnly="True"

ItemsSource="{Binding Items}"

ItemContainerStyle="{StaticResource ItemContainerStyle}"

IsFilteringAllowed="False">

<telerik:RadTreeListView.ChildTableDefinitions>

<telerik:TreeListViewTableDefinition ItemsSource="{Binding Children}" />

</telerik:RadTreeListView.ChildTableDefinitions>

<telerik:RadTreeListView.Columns>

<telerik:GridViewDataColumn Width="350">

<telerik:GridViewDataColumn.CellTemplate>

<DataTemplate>

<RichTextBox x:Name="ItemName"

ux:RichTextBoxHelper.DocumentMarkup="{Binding Name, UpdateSourceTrigger=PropertyChanged}"

Margin="{Binding Margin}"

Padding="0,5,0,0"

VerticalScrollBarVisibility="Auto"

Cursor="Arrow"

Focusable="False"

MaxHeight="80" />

</DataTemplate>

</telerik:GridViewDataColumn.CellTemplate>

</telerik:GridViewDataColumn>

</telerik:RadTreeListView.Columns>

</telerik:RadTreeListView>

When i run the application, the content renders properly the first time but when i select any row, I'm getting the following exception.

System.InvalidCastException was unhandled by user code
Message=Unable to cast object of type 'System.Windows.Documents.Paragraph' to type 'System.Windows.UIElement'.
Source=Telerik.Windows.Controls.GridView
StackTrace:
       at Telerik.Windows.Controls.SelectableTextBoxDragHandler.OnMouseLeftButtonDown(Object sender, MouseButtonEventArgs args) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\TreeListView\SelectableTextBoxDragHandler.cs:line 28
       at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       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.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.ContentElement.RaiseTrustedEvent(RoutedEventArgs args)
       at System.Windows.Input.InputManager.ProcessStagingArea()
       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)
       at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, 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.Window.ShowHelper(Object booleanBox)
       at System.Windows.Window.ShowDialog()
InnerException:

Earlier i used the same RichTextBox in a ListView, it worked fine. After changing to RadTreeListView I'm facing issues.

Please help!

RichTextBox in a RadTreeListView

1 Answer, 1 is accepted