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OpenClipboard Failed Exception in Telerik.Windows.Controls.FixedDocumentViewerBase

COMException (OpenClipboard Failed (Exception from HRESULT: 0x800401D0 (CLIPBRD_E_CANT_OPEN))) in assembly mscorlib Void Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode IntPtr errorInfo)

My application is unable to catch this exception because it happens in the application message loop.

Can Telerik not handle this internally? Allowing the exception to continue up the call stack brings our application down.

Here is the Call Stack:

mscorlib Void Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode IntPtr errorInfo)
mscorlib Void Runtime.InteropServices.Marshal.ThrowExceptionForHR(Int32 errorCode IntPtr errorInfo)
PresentationCore Void Windows.Clipboard.Flush()
Telerik.Windows.Controls.FixedDocumentViewers Void Telerik.Windows.Controls.FixedDocumentViewerBase. b__5(String s)
WindowsBase Object Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback Object args Int32 numArgs)
WindowsBase Object MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source Delegate method Object args Int32 numArgs Delegate catchHandler)
WindowsBase Void Windows.Threading.DispatcherOperation.InvokeImpl()
mscorlib Void Threading.ExecutionContext.RunInternal(Threading.ExecutionContext executionContext Threading.ContextCallback callback Object state Boolean preserveSyncCtx)
mscorlib Void Threading.ExecutionContext.Run(Threading.ExecutionContext executionContext Threading.ContextCallback callback Object state Boolean preserveSyncCtx)
mscorlib Void Threading.ExecutionContext.Run(Threading.ExecutionContext executionContext Threading.ContextCallback callback Object state)
WindowsBase Void Windows.Threading.DispatcherOperation.Invoke()
WindowsBase Void Windows.Threading.Dispatcher.ProcessQueue()
WindowsBase IntPtr Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd Int32 msg IntPtr wParam IntPtr lParam Boolean& handled)
WindowsBase IntPtr MS.Win32.HwndWrapper.WndProc(IntPtr hwnd Int32 msg IntPtr wParam IntPtr lParam Boolean& handled)
WindowsBase Object MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
WindowsBase Object Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback Object args Int32 numArgs)
WindowsBase Object MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source Delegate method Object args Int32 numArgs Delegate catchHandler)
WindowsBase Object Windows.Threading.Dispatcher.LegacyInvokeImpl(Windows.Threading.DispatcherPriority priority TimeSpan timeout Delegate method Object args Int32 numArgs)
WindowsBase IntPtr MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd Int32 msg IntPtr wParam IntPtr lParam)
Windows.Forms IntPtr Windows.Forms.UnsafeNativeMethods.DispatchMessageW(Windows.Forms.NativeMethods MSG& msg)
Windows.Forms Boolean Windows.Forms.Application ComponentManager.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID Int32 reason Int32 pvLoopData)
Windows.Forms Void Windows.Forms.Application ThreadContext.RunMessageLoopInner(Int32 reason Windows.Forms.ApplicationContext context)
Windows.Forms Void Windows.Forms.Application ThreadContext.RunMessageLoop(Int32 reason Windows.Forms.ApplicationContext context)
PacsViewer Void Novarad.Pacs.PacsViewer.App.Main(String args)

General Discussions
Boby
Telerik team
 answered on 10 Sep 2018
6 answers
245 views
[Solved] SuggestedActios Part disappears

Once I've started creating a new template using Expression Blend, The SuggestedActios Part disappears even using the default style created by Blend,

 

Kindly check the style 

 

<Style x:Key="RadChatStyle2" TargetType="{x:Type telerik:RadChat}">
    <Setter Property="FontFamily" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.FontFamily}}"/>
    <Setter Property="Foreground" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.MarkerBrush}}"/>
    <Setter Property="Background" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.MainBrush}}"/>
    <Setter Property="BorderBrush" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.BasicBrush}}"/>
    <Setter Property="BorderThickness" Value="1"/>
    <Setter Property="MessageListTemplateSelector">
    <Setter.Value>
    <ConversationalUI:MessageTemplateSelector>
    <ConversationalUI:MessageTemplateSelector.CalendarMessageTemplate>
    <DataTemplate>
    <telerik:RadCalendar DisplayDate="{Binding DisplayDate}" SelectedDate="{Binding SelectedDate, Mode=TwoWay}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.CalendarMessageTemplate>
    <ConversationalUI:MessageTemplateSelector.CarouselTemplate>
    <DataTemplate>
    <ConversationalUI:CarouselCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.CarouselTemplate>
    <ConversationalUI:MessageTemplateSelector.CardTemplate>
    <DataTemplate>
    <ConversationalUI:Card/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.CardTemplate>
    <ConversationalUI:MessageTemplateSelector.DataFormTemplate>
    <DataTemplate>
    <ItemsControl Margin="5" MinWidth="220"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.DataFormTemplate>
    <ConversationalUI:MessageTemplateSelector.FlightCardTemplate>
    <DataTemplate>
    <ConversationalUI:FlightCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.FlightCardTemplate>
    <ConversationalUI:MessageTemplateSelector.GifTemplate>
    <DataTemplate>
    <MediaElement Height="{Binding Size.Height}" LoadedBehavior="Play" Position="0" Source="{Binding Source}" Stretch="{Binding Stretch}" SpeedRatio="1" UnloadedBehavior="Play" Width="{Binding Size.Width}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.GifTemplate>
    <ConversationalUI:MessageTemplateSelector.ImageCardTemplate>
    <DataTemplate>
    <ConversationalUI:ImageCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ImageCardTemplate>
    <ConversationalUI:MessageTemplateSelector.ImageTemplate>
    <DataTemplate>
    <Image Height="{Binding Size.Height}" Source="{Binding Source}" Stretch="{Binding Stretch}" Width="{Binding Size.Width}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ImageTemplate>
    <ConversationalUI:MessageTemplateSelector.ListMessageTemplate>
    <DataTemplate>
    <telerik:RadListBox DisplayMemberPath="{Binding DisplayMemberPath}" IsSynchronizedWithCurrentItem="False" IsTabStop="False" ItemTemplate="{Binding ItemTemplate}" IsTextSearchEnabled="True" MinWidth="220" SelectedIndex="{Binding SelectedIndex, Mode=TwoWay}" SelectedItem="{Binding SelectedItem, Mode=TwoWay}" SelectedValueBinding="{x:Null}" SelectionMode="{Binding SelectionMode}" TextBinding="{x:Null}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ListMessageTemplate>
    <ConversationalUI:MessageTemplateSelector.ProductCardTemplate>
    <DataTemplate>
    <ConversationalUI:ProductCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ProductCardTemplate>
    <ConversationalUI:MessageTemplateSelector.TextMessageTemplate>
    <DataTemplate>
    <ConversationalUI:TextMessageControl Stylus.IsFlicksEnabled="False" Stylus.IsPressAndHoldEnabled="False"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.TextMessageTemplate>
    <ConversationalUI:MessageTemplateSelector.WeatherCardTemplate>
    <DataTemplate>
    <ConversationalUI:WeatherCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.WeatherCardTemplate>
    </ConversationalUI:MessageTemplateSelector>
    </Setter.Value>
    </Setter>
    <Setter Property="MessagePopupTemplateSelector">
    <Setter.Value>
    <ConversationalUI:MessageTemplateSelector>
    <ConversationalUI:MessageTemplateSelector.CalendarMessageTemplate>
    <DataTemplate>
    <telerik:RadCalendar DisplayDate="{Binding DisplayDate}" SelectedDate="{Binding SelectedDate, Mode=TwoWay}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.CalendarMessageTemplate>
    <ConversationalUI:MessageTemplateSelector.CarouselTemplate>
    <DataTemplate>
    <ConversationalUI:CarouselCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.CarouselTemplate>
    <ConversationalUI:MessageTemplateSelector.CardTemplate>
    <DataTemplate>
    <ConversationalUI:Card/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.CardTemplate>
    <ConversationalUI:MessageTemplateSelector.DataFormTemplate>
    <DataTemplate>
    <ItemsControl Margin="5" MinWidth="220"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.DataFormTemplate>
    <ConversationalUI:MessageTemplateSelector.FlightCardTemplate>
    <DataTemplate>
    <ConversationalUI:FlightCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.FlightCardTemplate>
    <ConversationalUI:MessageTemplateSelector.GifTemplate>
    <DataTemplate>
    <MediaElement Height="{Binding Size.Height}" LoadedBehavior="Play" Position="0" Source="{Binding Source}" Stretch="{Binding Stretch}" SpeedRatio="1" UnloadedBehavior="Play" Width="{Binding Size.Width}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.GifTemplate>
    <ConversationalUI:MessageTemplateSelector.ImageCardTemplate>
    <DataTemplate>
    <ConversationalUI:ImageCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ImageCardTemplate>
    <ConversationalUI:MessageTemplateSelector.ImageTemplate>
    <DataTemplate>
    <Image Height="{Binding Size.Height}" Source="{Binding Source}" Stretch="{Binding Stretch}" Width="{Binding Size.Width}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ImageTemplate>
    <ConversationalUI:MessageTemplateSelector.ListMessageTemplate>
    <DataTemplate>
    <telerik:RadListBox DisplayMemberPath="{Binding DisplayMemberPath}" IsSynchronizedWithCurrentItem="False" IsTabStop="False" ItemTemplate="{Binding ItemTemplate}" IsTextSearchEnabled="True" MinWidth="220" SelectedIndex="{Binding SelectedIndex, Mode=TwoWay}" SelectedItem="{Binding SelectedItem, Mode=TwoWay}" SelectedValueBinding="{x:Null}" SelectionMode="{Binding SelectionMode}" TextBinding="{x:Null}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ListMessageTemplate>
    <ConversationalUI:MessageTemplateSelector.ProductCardTemplate>
    <DataTemplate>
    <ConversationalUI:ProductCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ProductCardTemplate>
    <ConversationalUI:MessageTemplateSelector.TextMessageTemplate>
    <DataTemplate>
    <ConversationalUI:TextMessageControl Stylus.IsFlicksEnabled="False" Stylus.IsPressAndHoldEnabled="False"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.TextMessageTemplate>
    <ConversationalUI:MessageTemplateSelector.WeatherCardTemplate>
    <DataTemplate>
    <ConversationalUI:WeatherCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.WeatherCardTemplate>
    </ConversationalUI:MessageTemplateSelector>
    </Setter.Value>
    </Setter>
    <Setter Property="MessageOverlayTemplateSelector">
    <Setter.Value>
    <ConversationalUI:MessageTemplateSelector>
    <ConversationalUI:MessageTemplateSelector.CalendarMessageTemplate>
    <DataTemplate>
    <telerik:RadCalendar DisplayDate="{Binding DisplayDate}" SelectedDate="{Binding SelectedDate, Mode=TwoWay}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.CalendarMessageTemplate>
    <ConversationalUI:MessageTemplateSelector.CarouselTemplate>
    <DataTemplate>
    <ConversationalUI:CarouselCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.CarouselTemplate>
    <ConversationalUI:MessageTemplateSelector.CardTemplate>
    <DataTemplate>
    <ConversationalUI:Card/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.CardTemplate>
    <ConversationalUI:MessageTemplateSelector.DataFormTemplate>
    <DataTemplate>
    <ItemsControl Margin="5" MinWidth="220"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.DataFormTemplate>
    <ConversationalUI:MessageTemplateSelector.FlightCardTemplate>
    <DataTemplate>
    <ConversationalUI:FlightCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.FlightCardTemplate>
    <ConversationalUI:MessageTemplateSelector.GifTemplate>
    <DataTemplate>
    <MediaElement Height="{Binding Size.Height}" LoadedBehavior="Play" Position="0" Source="{Binding Source}" Stretch="{Binding Stretch}" SpeedRatio="1" UnloadedBehavior="Play" Width="{Binding Size.Width}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.GifTemplate>
    <ConversationalUI:MessageTemplateSelector.ImageCardTemplate>
    <DataTemplate>
    <ConversationalUI:ImageCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ImageCardTemplate>
    <ConversationalUI:MessageTemplateSelector.ImageTemplate>
    <DataTemplate>
    <Image Height="{Binding Size.Height}" Source="{Binding Source}" Stretch="{Binding Stretch}" Width="{Binding Size.Width}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ImageTemplate>
    <ConversationalUI:MessageTemplateSelector.ListMessageTemplate>
    <DataTemplate>
    <telerik:RadListBox DisplayMemberPath="{Binding DisplayMemberPath}" IsSynchronizedWithCurrentItem="False" IsTabStop="False" ItemTemplate="{Binding ItemTemplate}" IsTextSearchEnabled="True" MinWidth="220" SelectedIndex="{Binding SelectedIndex, Mode=TwoWay}" SelectedItem="{Binding SelectedItem, Mode=TwoWay}" SelectedValueBinding="{x:Null}" SelectionMode="{Binding SelectionMode}" TextBinding="{x:Null}"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ListMessageTemplate>
    <ConversationalUI:MessageTemplateSelector.ProductCardTemplate>
    <DataTemplate>
    <ConversationalUI:ProductCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.ProductCardTemplate>
    <ConversationalUI:MessageTemplateSelector.TextMessageTemplate>
    <DataTemplate>
    <ConversationalUI:TextMessageControl Stylus.IsFlicksEnabled="False" Stylus.IsPressAndHoldEnabled="False"/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.TextMessageTemplate>
    <ConversationalUI:MessageTemplateSelector.WeatherCardTemplate>
    <DataTemplate>
    <ConversationalUI:WeatherCard/>
    </DataTemplate>
    </ConversationalUI:MessageTemplateSelector.WeatherCardTemplate>
    </ConversationalUI:MessageTemplateSelector>
    </Setter.Value>
    </Setter>
    <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
    <Setter Property="IsTabStop" Value="False"/>
    <Setter Property="Template">
    <Setter.Value>
    <ControlTemplate TargetType="{x:Type telerik:RadChat}">
    <Grid>
    <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
    <Grid>
    <Grid.RowDefinitions>
    <RowDefinition/>
    <RowDefinition Height="Auto"/>
    <RowDefinition Height="Auto"/>
    <RowDefinition Height="Auto"/>
    <RowDefinition Height="48"/>
    <RowDefinition Height="Auto"/>
    </Grid.RowDefinitions>
    <ConversationalUI:ChatMessageList x:Name="PART_MessageList" Margin="{TemplateBinding Padding}" Grid.Row="0"/>
    <ConversationalUI:ChatPopupPlaceholder x:Name="PART_PopupPlaceholder" BorderBrush="{TemplateBinding BorderBrush}" Grid.Row="1" Visibility="Collapsed"/>
    <ItemsControl x:Name="PART_SuggestionItemsControl" Stylus.IsFlicksEnabled="False" Stylus.IsPressAndHoldEnabled="False" ConversationalUI:ScrollViewerScrollingHelper.IsEnabled="True" Padding="12,16,5,12" Grid.Row="2" Visibility="{Binding SuggestedActionsVisibility, RelativeSource={RelativeSource FindAncestor, AncestorLevel=1, AncestorType={x:Type telerik:RadChat}}}">
    <ItemsControl.ItemsPanel>
    <ItemsPanelTemplate>
    <VirtualizingStackPanel IsItemsHost="True" Orientation="Horizontal"/>
    </ItemsPanelTemplate>
    </ItemsControl.ItemsPanel>
    <ItemsControl.ItemTemplate>
    <DataTemplate>
    <telerik:RadButton BorderBrush="{DynamicResource {x:Static telerik:Windows8ResourceKey.AccentBrush}}" BorderThickness="2" Background="{DynamicResource {x:Static telerik:Windows8ResourceKey.AccentBrush}}" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor, AncestorLevel=1, AncestorType={x:Type telerik:RadChat}}}" Command="{Binding Command}" Foreground="{DynamicResource {x:Static telerik:Windows8ResourceKey.MainBrush}}" Stylus.IsFlicksEnabled="False" InnerCornerRadius="0" Stylus.IsPressAndHoldEnabled="False" Margin="0,0,10,0" MinHeight="28" telerik:TouchManager.ShouldSuspendMousePromotion="True">
    <StackPanel Orientation="Horizontal">
    <Image Height="16" Source="{Binding Icon}" Stretch="UniformToFill" Width="16">
    <Image.Clip>
    <EllipseGeometry Center="8,8" RadiusY="8" RadiusX="8"/>
    </Image.Clip>
    <Image.Visibility>
    <Binding Path="Source" RelativeSource="{RelativeSource Self}">
    <Binding.Converter>
    <telerik:NullToVisibilityConverter/>
    </Binding.Converter>
    </Binding>
    </Image.Visibility>
    </Image>
    <TextBlock Margin="{Binding Padding, RelativeSource={RelativeSource FindAncestor, AncestorLevel=1, AncestorType={x:Type telerik:RadButton}}}" Text="{Binding Text}" VerticalAlignment="Center">
    <TextBlock.Visibility>
    <Binding Path="Text" RelativeSource="{RelativeSource Self}">
    <Binding.Converter>
    <telerik:NullToVisibilityConverter/>
    </Binding.Converter>
    </Binding>
    </TextBlock.Visibility>
    </TextBlock>
    </StackPanel>
    </telerik:RadButton>
    </DataTemplate>
    </ItemsControl.ItemTemplate>
    <ItemsControl.Template>
    <ControlTemplate TargetType="{x:Type ItemsControl}">
    <ScrollViewer BorderThickness="0" Background="{x:Null}" HorizontalScrollBarVisibility="Auto">
    <ScrollViewer.Style>
    <Style TargetType="{x:Type ScrollViewer}">
    <Setter Property="Template">
    <Setter.Value>
    <ControlTemplate TargetType="{x:Type ScrollViewer}">
    <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
    <Grid>
    <ScrollContentPresenter x:Name="PART_ScrollContentPresenter" CanContentScroll="{TemplateBinding CanContentScroll}" CanHorizontallyScroll="False" CanVerticallyScroll="False" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Margin="{TemplateBinding Padding}"/>
    <ScrollBar x:Name="PART_VerticalScrollBar" AutomationProperties.AutomationId="VerticalScrollBar" Cursor="Arrow" HorizontalAlignment="Right" Maximum="{TemplateBinding ScrollableHeight}" Minimum="0" Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}" Value="{Binding VerticalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" ViewportSize="{TemplateBinding ViewportHeight}"/>
    <ScrollBar x:Name="PART_HorizontalScrollBar" AutomationProperties.AutomationId="HorizontalScrollBar" Cursor="Arrow" Maximum="{TemplateBinding ScrollableWidth}" Minimum="0" Orientation="Horizontal" telerik:TouchManager.TouchMode="None" Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}" Value="{Binding HorizontalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" ViewportSize="{TemplateBinding ViewportWidth}" VerticalAlignment="Bottom"/>
    </Grid>
    </Border>
    </ControlTemplate>
    </Setter.Value>
    </Setter>
    <Style.BasedOn>
    <Style TargetType="{x:Type ScrollViewer}">
    <Setter Property="Template">
    <Setter.Value>
    <ControlTemplate TargetType="{x:Type ScrollViewer}">
    <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
    <Grid>
    <Grid.ColumnDefinitions>
    <ColumnDefinition Width="*"/>
    <ColumnDefinition Width="Auto"/>
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
    <RowDefinition Height="*"/>
    <RowDefinition Height="Auto"/>
    </Grid.RowDefinitions>
    <ScrollContentPresenter x:Name="PART_ScrollContentPresenter" CanContentScroll="{TemplateBinding CanContentScroll}" CanHorizontallyScroll="False" CanVerticallyScroll="False" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Grid.Column="0" Margin="{TemplateBinding Padding}" Grid.Row="0"/>
    <ScrollBar x:Name="PART_VerticalScrollBar" AutomationProperties.AutomationId="VerticalScrollBar" Cursor="Arrow" Grid.Column="1" Maximum="{TemplateBinding ScrollableHeight}" Minimum="0" Grid.Row="0" Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}" Value="{Binding VerticalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" ViewportSize="{TemplateBinding ViewportHeight}"/>
    <ScrollBar x:Name="PART_HorizontalScrollBar" AutomationProperties.AutomationId="HorizontalScrollBar" Cursor="Arrow" Grid.Column="0" Maximum="{TemplateBinding ScrollableWidth}" Minimum="0" Orientation="Horizontal" Grid.Row="1" Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}" Value="{Binding HorizontalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" ViewportSize="{TemplateBinding ViewportWidth}"/>
    </Grid>
    </Border>
    </ControlTemplate>
    </Setter.Value>
    </Setter>
    <Setter Property="Background" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.MainBrush}}"/>
    <Setter Property="BorderBrush" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.BasicBrush}}"/>
    <Setter Property="BorderThickness" Value="1"/>
    <Setter Property="VerticalScrollBarVisibility" Value="Auto"/>
    <Setter Property="HorizontalScrollBarVisibility" Value="Auto"/>
    <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
    <Setter Property="VerticalContentAlignment" Value="Stretch"/>
    <Setter Property="IsTabStop" Value="False"/>
    <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
    </Style>
    </Style.BasedOn>
    </Style>
    </ScrollViewer.Style>
    <ItemsPresenter Margin="{TemplateBinding Padding}"/>
    </ScrollViewer>
    </ControlTemplate>
    </ItemsControl.Template>
    </ItemsControl>
    <ConversationalUI:TypingIndicator x:Name="PART_TypingIndicator" Icon="{TemplateBinding TypingIndicatorIcon}" Grid.Row="3" Text="{TemplateBinding TypingIndicatorText}" Visibility="{TemplateBinding TypingIndicatorVisibility}"/>
    <Border x:Name="InputBoxContainer" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="0,1,0,0" Grid.Row="4">
    <DockPanel>
    <StackPanel DockPanel.Dock="Right" Orientation="Horizontal">
    <telerik:RadToggleButton x:Name="PART_ToolBarButton" IsChecked="{Binding IsToolBarOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" InnerCornerRadius="0" Margin="5,0">
    <telerik:RadToggleButton.Style>
    <Style TargetType="{x:Type telerik:RadToggleButton}">
    <Setter Property="Height" Value="28"/>
    <Setter Property="Width" Value="28"/>
    <Setter Property="Padding" Value="0"/>
    <Setter Property="Background" Value="Transparent"/>
    <Setter Property="BorderThickness" Value="0"/>
    <Setter Property="Foreground" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.StrongBrush}}"/>
    <Setter Property="VerticalAlignment" Value="Center"/>
    <Setter Property="HorizontalContentAlignment" Value="Center"/>
    <Setter Property="VerticalContentAlignment" Value="Center"/>
    <Setter Property="IsTabStop" Value="False"/>
    <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
    <Setter Property="UseLayoutRounding" Value="True"/>
    <Setter Property="Template">
    <Setter.Value>
    <ControlTemplate TargetType="{x:Type telerik:RadToggleButton}">
    <Grid>
    <Border x:Name="BorderVisual" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}"/>
    <ContentPresenter x:Name="Content" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" TextElement.Foreground="{TemplateBinding Foreground}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
    </Grid>
    <ControlTemplate.Triggers>
    <Trigger Property="IsChecked" Value="True">
    <Setter Property="Foreground" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.AccentBrush}}"/>
    </Trigger>
    <Trigger Property="IsMouseOver" Value="True">
    <Setter Property="Foreground" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.MarkerBrush}}"/>
    </Trigger>
    <Trigger Property="IsPressed" Value="True">
    <Setter Property="Foreground" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.MarkerBrush}}"/>
    </Trigger>
    <Trigger Property="IsEnabled" Value="False">
    <Setter Property="Opacity" TargetName="Content" Value="0.3"/>
    </Trigger>
    </ControlTemplate.Triggers>
    </ControlTemplate>
    </Setter.Value>
    </Setter>
    </Style>
    </telerik:RadToggleButton.Style>
    <telerik:RadToggleButton.Visibility>
    <Binding Path="ToolBarCommands.Count" RelativeSource="{RelativeSource TemplatedParent}">
    <Binding.Converter>
    <telerik:NumberToVisibilityConverter/>
    </Binding.Converter>
    </Binding>
    </telerik:RadToggleButton.Visibility>
    <telerik:RadGlyph Glyph="" TextOptions.TextRenderingMode="Aliased"/>
    </telerik:RadToggleButton>
    <telerik:RadButton x:Name="SendButton" CommandParameter="{Binding RelativeSource={RelativeSource TemplatedParent}}" Command="{Binding SendCommand, RelativeSource={RelativeSource TemplatedParent}}" InnerCornerRadius="0" Margin="5,0">
    <telerik:RadButton.Style>
    <Style TargetType="{x:Type telerik:RadButton}">
    <Setter Property="Height" Value="28"/>
    <Setter Property="Width" Value="28"/>
    <Setter Property="Padding" Value="0"/>
    <Setter Property="Background" Value="Transparent"/>
    <Setter Property="BorderThickness" Value="0"/>
    <Setter Property="Foreground" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.AccentBrush}}"/>
    <Setter Property="VerticalAlignment" Value="Center"/>
    <Setter Property="HorizontalContentAlignment" Value="Center"/>
    <Setter Property="VerticalContentAlignment" Value="Center"/>
    <Setter Property="IsTabStop" Value="False"/>
    <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
    <Setter Property="UseLayoutRounding" Value="True"/>
    <Setter Property="Template">
    <Setter.Value>
    <ControlTemplate TargetType="{x:Type telerik:RadButton}">
    <Grid>
    <Border x:Name="BorderVisual" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}"/>
    <ContentPresenter x:Name="Content" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" TextElement.Foreground="{TemplateBinding Foreground}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
    </Grid>
    <ControlTemplate.Triggers>
    <Trigger Property="IsMouseOver" Value="True">
    <Setter Property="Foreground" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.MarkerBrush}}"/>
    </Trigger>
    <Trigger Property="IsPressed" Value="True">
    <Setter Property="Foreground" Value="{telerik:Windows8Resource ResourceKey={x:Static telerik:Windows8ResourceKey.MarkerBrush}}"/>
    </Trigger>
    <Trigger Property="IsEnabled" Value="False">
    <Setter Property="Opacity" TargetName="Content" Value="0.3"/>
    </Trigger>
    </ControlTemplate.Triggers>
    </ControlTemplate>
    </Setter.Value>
    </Setter>
    </Style>
    </telerik:RadButton.Style>
    <Path Data="M1,9L18,9 0,16z M0,0L18,8 1,8z" Fill="{Binding Foreground, ElementName=SendButton}" Stretch="None" SnapsToDevicePixels="True" StrokeThickness="0"/>
    </telerik:RadButton>
    </StackPanel>
    <telerik:RadWatermarkTextBox x:Name="PART_InputBox" AcceptsReturn="True" BorderThickness="0" Background="Transparent" WatermarkContent="{TemplateBinding InputBoxWatermarkContent}"/>
    </DockPanel>
    </Border>
    <Border x:Name="PART_ToolBar" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="0,1,0,0" Background="{DynamicResource {x:Static telerik:Windows8ResourceKey.MainBrush}}" CornerRadius="0,0,1,1" Height="48" Grid.Row="5" SnapsToDevicePixels="True">
    <Border.Visibility>
    <Binding ElementName="PART_ToolBarButton" Path="IsChecked">
    <Binding.Converter>
    <telerik:BooleanToVisibilityConverter/>
    </Binding.Converter>
    </Binding>
    </Border.Visibility>
    <ItemsControl>
    <ItemsControl.ItemsPanel>
    <ItemsPanelTemplate>
    <StackPanel IsItemsHost="True" Orientation="Horizontal"/>
    </ItemsPanelTemplate>
    </ItemsControl.ItemsPanel>
    <ItemsControl.ItemTemplate>
    <DataTemplate>
    <telerik:RadButton ContentTemplate="{Binding ToolBarCommandTemplate, RelativeSource={RelativeSource FindAncestor, AncestorLevel=1, AncestorType={x:Type telerik:RadChat}}}" Content="{Binding}" Command="{Binding Command}" InnerCornerRadius="0" Margin="5,5,0,5"/>
    </DataTemplate>
    </ItemsControl.ItemTemplate>
    </ItemsControl>
    </Border>
    <ConversationalUI:ChatOverlay x:Name="PART_Overlay" Grid.RowSpan="5" Visibility="Collapsed"/>
    </Grid>
    </Border>
    </Grid>
    </ControlTemplate>
    </Setter.Value>
    </Setter>
    </Style>

 

Chat (Conversational UI)
Omar
Top achievements
Rank 1
 answered on 09 Sep 2018
7 answers
631 views
How to change reference location

I could not find a answer to this Question in the documentation nor the forum so I am asking here:

Right now, all references get stored in [SOLUTIONDIRECTORY]\lib\RCWPF\...

Is there any way of changing this path, for example via a config file like nuget offers?

This is causing us some trouble since we allready established a certain folderarchitecture and would like to incoorporate all references from telerik without using scripts to copy stuff arround. 

If the Forum is the wrong place to ask, should I open a ticket or a feature request?

Installer and Visual Studio Extensions
dew
Top achievements
Rank 1
 answered on 08 Sep 2018
1 answer
716 views
[Solved] RadPdfViewer Fit to page not working.

So, I went out and specifically bought Telerik UI for WPF because we needed a good PDF Viewer.

My structure is rather simple

WPF:

<Window
        xmlns:local="clr-namespace:Catalogo"
        xmlns:controls="clr-namespace:Controls;assembly=Controls"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" x:Class="Catalogo.Catalogos"
        mc:Ignorable="d"
        Title="Catalogo" WindowStartupLocation="CenterScreen" SnapsToDevicePixels="False"
        VisualEdgeMode="Aliased"
        ResizeMode="NoResize"
        Height="{DynamicResource {x:Static SystemParameters.MaximizedPrimaryScreenHeightKey}}"
        Width="{DynamicResource {x:Static SystemParameters.MaximizedPrimaryScreenWidthKey}}" WindowStyle="None"
        Loaded="Window_Loaded" Background="{DynamicResource primary_dark}">
    <Window.Resources>
        <ResourceDictionary Source="/Styles;component/Merged.xaml"/>
    </Window.Resources>
    <Grid>
        <telerik:RadBook RightPageIndex="1" BorderBrush="Transparent" >
            <telerik:RadBookItem Width="960" Height="1060" >
                <Grid>
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition/>
                        </Grid.RowDefinitions>
                        <telerik:RadPdfViewerToolBar RadPdfViewer="{Binding ElementName=pdfViewerIzq, Mode=OneTime}"/>
                        <telerik:RadPdfViewer x:Name="pdfViewerIzq" DataContext="{Binding CommandDescriptors, ElementName=pdfViewerIzq}" Grid.Row="1"/>
                    </Grid>
 
                </Grid>
            </telerik:RadBookItem>
            <telerik:RadBookItem  Width="960" Height="1060">
 
                <Grid>
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition/>
                        </Grid.RowDefinitions>
                        <telerik:RadPdfViewerToolBar Name="barraDer" RadPdfViewer="{Binding ElementName=pdfViewerDer, Mode=OneTime}"/>
                        <telerik:RadPdfViewer x:Name="pdfViewerDer" DataContext="{Binding CommandDescriptors, ElementName=pdfViewerDer}" Grid.Row="1"/>
                    </Grid>
 
                </Grid>
            </telerik:RadBookItem>
        </telerik:RadBook>
    </Grid>
</Window>

 

Then I have two methods for setting the source for the left and right viewers:

public void setPageIzq(string ruta)
        {
            pdfViewerIzq.DocumentSource = new PdfDocumentSource(new System.Uri(ruta));
            pdfViewerIzq.FitToPage();
            pdfViewerIzq.Mode = Telerik.Windows.Documents.Fixed.UI.FixedDocumentViewerMode.TextSelection;
            pdfViewerIzq.CommandDescriptors.FitToPageFixedDocumentSinglePageViewPresenterCommandDescriptor.IsEnabled = true;
            pdfViewerIzq.CommandDescriptors.FitToPageFixedDocumentSinglePageViewPresenterCommandDescriptor.Command.Execute(null);
            pdfViewerIzq.ScaleMode = Telerik.Windows.Documents.Fixed.UI.ScaleMode.FitToPage;
        }
 
        public void setPageDer(string ruta)
        {
            pdfViewerDer.DocumentSource = new PdfDocumentSource(new System.Uri(ruta));
            pdfViewerIzq.CommandDescriptors.FitToPageCommandDescriptor.IsEnabled = true;
            pdfViewerIzq.CommandDescriptors.FitToPageCommandDescriptor.Command.Execute(null);
        }

 

 

As you can see, I tried a bunch of different ways to set the viewer to fit to page. If I use the navbar up top, I can make it fit to page, but none of the methods I tried worked for my manual setting.

 

I had to take this approach because we need to display the document two pages at a time, any good ideas?

PDFViewer
Anna
Telerik team
 answered on 07 Sep 2018
1 answer
134 views
Cancel docking
Hi

I want to use the arrows of the RootCompass to insert a new RadPaneGroup to an existing RadSplitContainer – instead of docking the dragged pane.

Is it possible to conditionally cancel the docking and insert the panes manually?

/Flemming Rosenbrandt
Docking
Kalin
Telerik team
 answered on 07 Sep 2018
7 answers
2.3K+ views
[Solved] PDF Viewer loads PDF from Memory Stream very slow

Hello,

  I am using the PDFViewer control and my intent is to show a PDF (prior to writing to disk), the issue I am having is that once the PDF attempts to load into the PDF Viewer it is incredibly slow.  The PDF is larger in size (roughly 167+ pages) but that is not uncommon for the average pdf we are generating.  My question is, is there anyway to optimize loading information into this control to make PDF's not take an upward of 10-15 minutes to load?

Code Example:

private void LoadPdfToView()
{
  try
  {
     //Create a memory stream we will use to hold our PDF
     MemoryStream DocumentStream = new MemoryStream();
     //A 3rd party control that creates the PDF document (this save feature can save to memory stream or to disk)
     TheDoc.Save(DocumentStream);
     //Create the Fixed document based on the PDF document in memory
     RadFixedDocument document = new PdfFormatProvider ( DocumentStream, FormatProviderSettings.ReadOnDemand ).Import();
     //Load the pdf document into our control
     pdfViewer.Document = document;
   }
   catch (Exception ex)
   {
     MessageBox.Show("Error Loading PDF to view: " + ex.Message);
   }
}

PDFViewer
Tanya
Telerik team
 answered on 07 Sep 2018
1 answer
150 views
Grid row colors on combinations of error, selected, hover

I've looked quite extensively for this in the grid control, but I'll ask before I request the enhancement.

We are using the RadGridView quite extensively, and we have one major UI problem with it.  The issue has two parts:

  1. When a row is selected, hovering over it makes no visible difference.
  2. When a row is in error, it is impossible to tell whether the row is also selected and/or being hovered over.

These may seem minor, but they are a growing annoyance to our users, especially since error conditions and multi-row-select are common in their use case.

Is it possible for me to work around this without extracting a large chunk of template and changing it? (That's the only option I've come up with so far.)  If so, how?  If not, how can I add this as a feature request for Telerik?

 

Thanks!

Brad.

GridView
Stefan
Telerik team
 answered on 07 Sep 2018
1 answer
278 views
Wizard in MVVM - Buttons

Hi,
I use the Wizard in a MVVM Based App.

I have a WizardControlView and a WizardControlViewModel.

<telerik:RadWizard x:Name="wizard"                           
                               HorizontalAlignment="Left"
                               Height="300"
                               VerticalAlignment="Top"
                               Width="500"                           
                               IsContentPreserved="True"
                               localControlsBindings:RadWizardPageBinding.ItemSource ="{Binding WizardPages}">       
</telerik:RadWizard>

Inside the WizardPages are no footer with buttons defined.
I use the default footer.

No I can see the buttons in the footer.
When I click e.g. the Cancel Button I want to react inside the WizardControlViewModel and not in the WizardControlView (according MVVM).

Is it possible ?

Regards
Stefan

Wizard
Stefan
Top achievements
Rank 1
 answered on 07 Sep 2018
1 answer
161 views
RadPane separators
Hi

Is it possible to insert a separator between the RadPane headers in a RadPaneGroup?

/Flemming Rosenbrandt
Docking
Stefan
Telerik team
 answered on 07 Sep 2018
1 answer
488 views
Set line color of CartesianChartGrid

Hi, I have a chart that display gridlines using the cartesianchartgrid, defined like this in xaml:

<telerik:RadCartesianChart.Grid>
    <telerik:CartesianChartGrid MajorLinesVisibility="XY"/>
</telerik:RadCartesianChart.Grid>

 

But I can't figure out how to change the color of the gridlines. I don't see any brush or color properties for it on the class, changing the foreground etc brush does not work.

ChartView
Kalin
Telerik team
 answered on 07 Sep 2018
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