or
I´m trying to set styling on RichTextBox, but no styling is applied. Telerik styling is not supported for RichTextBox?
My code example:
<Window x:Class="Richtextboxstyling.MainWindow" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" Title="MainWindow" Height="350" Width="525"> <Grid> <RichTextBox telerik:StyleManager.Theme="Office_Silver" Height="140" VerticalScrollBarVisibility="Auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" /> </Grid> </Window>I have a Prism app which uses the BackGroundWorker for loading data into a DataTable and then binding the DataTable.DefaultView to the ItemSource of a RadGridView. Often when I start the application, I get blank rows added into the grid. Any idea why I get blank rows when I run the application sometimes but see actual data other times? See XAML below:
<UserControl x:Class="OrganizationalUnitModule.Views.OUList" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" xmlns:my="clr-namespace:OrganizationalUnitModule.Presenter" xmlns:telerikData="clr-namespace:Telerik.Windows.Data;assembly=Telerik.Windows.Data" xmlns:telerikControls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="300"> <UserControl.DataContext> <my:OUListBWPresenter/> </UserControl.DataContext> <Grid> <Grid.RowDefinitions> <RowDefinition Height="80"/> <RowDefinition Height="40"/> <RowDefinition Height="600"/> </Grid.RowDefinitions> <Border Grid.Row="0" Margin="0,0,0,0" VerticalAlignment="Top" Height="80" Width="Auto"> <Border.Background> <LinearGradientBrush EndPoint="0.5,1" MappingMode="RelativeToBoundingBox" StartPoint="0.5,0"> <GradientStop Color="#FFEEF3EB" Offset="1"/> <GradientStop Color="#FF0B72B4"/> <GradientStop Color="#FF549BC5" Offset="0.323"/> <GradientStop Color="#FFA4C9D8" Offset="0.677"/> </LinearGradientBrush> </Border.Background> </Border> <Border Grid.Row="1" Margin="0,0,0,0" VerticalAlignment="Top" Height="40" Width="Auto"> <StackPanel Orientation="Horizontal"> <telerikControls:RadButton Content="Mode" Height="30" Width="80" Margin="15,5,0,5"/> <telerikControls:RadButton Content="Load" Height="30" Width="80" Margin="15,5,0,5" Command="{Binding LoadCommand}" /> <telerikControls:RadButton Content="Cancel" Height="30" Width="80" Margin="15,5,0,5" Command="{Binding CancelCommand}" /> </StackPanel> </Border> <Border Grid.Row="2" Margin="12,12,10,12"> <telerik:RadGridView x:Name="OUGridView" AutoGenerateColumns="True" ItemsSource="{Binding Path=OrganizationalUnitsDT.DefaultView}" IsBusy="false" Grid.Row="2" SelectionMode="Multiple" Margin="0,0,0,0" Height="Auto" Width="Auto" > </telerik:RadGridView> </Border> </Grid> </UserControl> 
System.NullReferenceException was unhandled Message=Object reference not set to an instance of an object. Source=Telerik.Windows.Controls.ScheduleView StackTrace: at Telerik.Windows.Controls.DefaultDragDropBehavior.GetDragDropState(Object payload, IDataObject dragDataObject, IEnumerable destinationAppointmentsSource, IServiceProvider serviceProvider) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\ScheduleView\ScheduleView\DragDropBehavior\DefaultDragDropBehavior.cs:line 43 at Telerik.Windows.Controls.DragDropHelper.GetStateForDragDrop(Object payload, DataObject dropDataObject, Point relativeDragPoint) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\ScheduleView\ScheduleView\DragDropBehavior\Helpers\DragDropHelper.cs:line 660 at Telerik.Windows.Controls.DragDropHelper.OnDropQuery(Object sender, DragDropQueryEventArgs e) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\ScheduleView\ScheduleView\DragDropBehavior\Helpers\DragDropHelper.cs:line 402 at Telerik.Windows.Controls.DragDrop.DragDropQueryEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\DragDrop\DragDropQueryEventArgs.cs:line 50 at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e) at Telerik.Windows.Controls.DragDrop.RadDragAndDropManager.DragDropProvider_DropQuery(Object sender, DragDropEventArgs e) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\DragDrop\RadDragAndDropManager.cs:line 314 at Telerik.Windows.Controls.DragDrop.DragDropProviderBase.RaiseDropQuery() in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\DragDrop\DragProviders\DragDropProviderBase.cs:line 182 at Telerik.Windows.Controls.DragDrop.SimulatedDragDropProvider.OnRealDrag(IMouseEventArgs e) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\DragDrop\DragProviders\SimulatedDragDropProvider.cs:line 469 at Telerik.Windows.Controls.DragDrop.SimulatedDragDropProvider.OnCoverRectangleMouseMoveInternal(IMouseEventArgs e) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\DragDrop\DragProviders\SimulatedDragDropProvider.cs:line 361 at Telerik.Windows.Controls.DragDrop.WPFSimulatedDragDropProvider.OnCoverRectangleMouseMove(Object sender, MouseEventArgs e) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\DragDrop\DragProviders\WPFSimulatedDragDropProvider.cs:line 380 at System.Windows.Input.MouseEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) 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.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted) at System.Windows.Input.InputManager.ProcessStagingArea() at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input) 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.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.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.RunInternal(Window window) at System.Windows.Application.Run(Window window) at System.Windows.Application.Run() at Administration2010.App.Main() in D:\ZSVNN\Administration2010\Administration2010\obj\x86\Debug\App.g.cs:line 50 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException: Hi,
When I am trying to add WPF controls to my tool box the whole visual studio is close..
How can we resolve this problem?
Thanks in advance