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