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!

Hi

i bind DataTable to GridView.
and then i used CustomAggregateFunction(StandardDeviationFunction)...

then occur Exception : 
InvalidOperationException.
No generic method 'StdDev' on type 'RadGridViewTest.Statistics' is compatible with the supplied type arguments and arguments. No type arguments should be provided if the method is non-generic.

how to do i????

thank you

Hi Telerik,

I have the xaml below, which gives me a control that responds beautifully to mouse-right-clicks and displays the context menu. The special key on my keyboard for context menu is ignored, however. Any clues as to what I am doing wrong?

Thanks,

Anders, Denmark

<UserControl x:Class="Rap1D.Rap1D_WPF.Controls.Navigator.NavigatorControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:WorkspaceExplorer="clr-namespace:Rap1D.ViewModelLayer.Implementations.Commands.WorkspaceExplorer;assembly=Rap1D.ViewModelLayer.Implementations"
             xmlns:TreeViewItems="clr-namespace:Rap1D.ViewModelLayer.Implementations.TreeViewItems;assembly=Rap1D.ViewModelLayer.Implementations"
             xmlns:Controls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation">
    <DockPanel>
        <TreeView ItemsSource="{Binding Path=Children, NotifyOnSourceUpdated=True}" Name="treeview">
            <TreeView.ItemContainerStyle>
                <Style TargetType="{x:Type TreeViewItem}">
                    <Setter Property="WorkspaceExplorer:MouseDoubleClickBehavior.MouseDoubleClick" Value="{Binding ActivateItemCommand}" />

                    <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}" />
                    <Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}" />
                    <Setter Property="FontWeight" Value="Normal" />
                    <Style.Triggers>
                        <Trigger Property="IsSelected" Value="True">
                            <Setter Property="FontWeight" Value="Bold" />
                        </Trigger>
                    </Style.Triggers>
                </Style>
            </TreeView.ItemContainerStyle>

            <TreeView.Resources>
                <HierarchicalDataTemplate x:Key="MenuItemTemplate"
                                 ItemsSource="{Binding ContextMenuItems}">
                    <TextBlock Text="{Binding Text}" />
                </HierarchicalDataTemplate>
                <HierarchicalDataTemplate DataType="{x:Type TreeViewItems:ProjectViewModel}" ItemsSource="{Binding Children}">
                    <StackPanel Orientation="Horizontal">
                        <Image Width="16" Height="16" Margin="3,0" Source="Images\Project.png" />
                        <TextBlock Text="{Binding DisplayName}" />
                    </StackPanel>
                </HierarchicalDataTemplate>

                <HierarchicalDataTemplate DataType="{x:Type TreeViewItems:ProductViewModel}" ItemsSource="{Binding Children}">
                    <StackPanel Orientation="Horizontal">
                        <Image Width="16" Height="16" Margin="3,0" Source="Images\Product.png" />
                        <TextBlock Text="{Binding DisplayName}" />
                    </StackPanel>
                </HierarchicalDataTemplate>

                <HierarchicalDataTemplate DataType="{x:Type TreeViewItems:ProductDesignViewModel}" ItemsSource="{Binding Children}">
                    <StackPanel Orientation="Horizontal">
                        <Image Width="16" Height="16" Margin="3,0" Source="Images\ProductDesign.png" />
                        <TextBlock Text="{Binding DisplayName}" />
                    </StackPanel>
                </HierarchicalDataTemplate>

                <DataTemplate DataType="{x:Type TreeViewItems:ProductComponentViewModel}">
                    <StackPanel Orientation="Horizontal">
                        <Image Width="16" Height="16" Margin="3,0" Source="Images\Component.png" />
                        <TextBlock Text="{Binding DisplayName}" />
                    </StackPanel>
                </DataTemplate>
            </TreeView.Resources>
            <Controls:RadContextMenu.ContextMenu>
                <Controls:RadContextMenu x:Name="radContextMenu"
                                         ItemTemplate="{StaticResource MenuItemTemplate}">
                    <Controls:RadMenuItem Header="C_ut"
                                          Command="{Binding CutCommand}" />
                    <Controls:RadMenuItem Header="Copy"
                                          Command="{Binding CopyCommand}" />
                    <Controls:RadMenuItem Header="Paste"
                                          Command="{Binding PasteCommand}" />
                    <Controls:RadMenuItem Header="Delete"
                                          Command="{Binding DeleteCommand}" />
                    <Controls:RadMenuItem Header="_Editor"
                                          Command="{Binding ShowEditorCommand}" />

                </Controls:RadContextMenu>
            </Controls:RadContextMenu.ContextMenu>
        </TreeView>
    </DockPanel>
</UserControl>

Hi,

Is there a way to reload the radcarousel in runtime?
It seems that there is no refresh() or reload() method.
Please advise.

Best Regards,
Jog

Hello,
I am using telerik new Radar charts. 

I am looking for a way to customise Radar Categories and Labels.
My objective is to change color and font of each label and category individually (see attached file for example)
Is this possible?

Thank you for answer. 

Aldric

I have a collection of resources that will vary per instance of the scheduler.  I am not seeing a way to have the collection populated with whatever is in my collection.  Any help would be greatly appreciated.

How do you change the title of the Edit Appointment Dialog that appears on double-click of a Schedule View?

Hi,

I am using “2011.3.1220.40” version of Telerik WPF dlls. 

Getting some weird Behavior of RadDataGrid. Below are the details.

1. Clicking on filter is brining filter on top left corner of the screen. (Refer attached screenshot)
2. I am not getting filter on column header all the time, sometime it appears and some time not. (Refer attached screenshot)

Mostly got problem when testing in higher resolution / multiple monitors.

This inconsistency really bother me and don't know how to fix it. Can anybody please give some clue.

Thanks in Advance.

When i set the RadRichTextBox's background property in layoutmode property is normal,the background is effective.
But when the LayoutMode is paged the background property is invalid,and look like something shut out.

I want to set the background property in layoutmode is paged can be effectove,please help me(⊙_⊙)?

Greeting.

Can you give any information about Radchart performance at huge datasets.
I want to display ScatterPlot with 150.000 point inside.
I cannot use SamplingThreshold, because i must show all points.
(if i have 500x500point area, in bad scenario i must show 500*500=250.000 points)


I try to create some tests.
With SamplingThreshold=200, when i add to datasource my dataset, it want 4 seconds or so.
And after this control painted without any pause.
With SamplingThreshold=5000 i wait  10-15second before control painted.
With SamplingThreshold=25000 i wait 100-150second before control painted.
With SamplingThreshold=100000 i wait 10 minutes... no way... application struck.
I try disable animation, disable autorange etc etc etc, nothing help.

Can Radchart potentially show 150.000 point, or it just impossible ?
If it possible, may be any example with big set available ?

Best Regards
Serg