I am using Telerik.Windows.Controls for Wpf version 2021.1.233, and have reports from a customer that our application is crashing with the following error included below. As you can see the call stack is not terribly helpful, so I am hoping that either someone else has run into this, or someone from Telerik can offer some insight as to what might be null in the MapSourceInitializeCompleted handler so I can look into preventing this error.

Briefly, my application opens a window with a RadMap, draws a pushpin or two on the map, and the user can close the window at any point. After a period of time the window can also be closed by the application without any user interaction if certain criteria are met. I am fairly sure that the window with the map opens and displays correctly. I think the crash may be related to either an update to the map (drawing the pushpin), or closing the window containing the map, but that is a best guess at this point.

.NET Core Version: 3.1.27
Description: The process was terminated due to an unhandled exception.
Exception Info: System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.Windows.Controls.Map.TilePresenter.MapSourceInitializeCompleted(Object sender, EventArgs e)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.DispatcherOperation.InvokeImpl()
   at MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(Object obj)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
   at MS.Internal.CulturePreservingExecutionContext.Run(CulturePreservingExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Windows.Threading.DispatcherOperation.Invoke()
   at System.Windows.Threading.Dispatcher.ProcessQueue()
   at System.Windows.Threading.Dispatcher.WndProcHook(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 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(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()

Hi,

in wpf, in telerik:RadGridView I can not change width of the RowIndicator column (the very first one where the arrow points at the selected row.). There is only visibility property, but nothing else.

Is there a way to change it?

thank you,

J.

Hello Team,

I have faced one issue in combbox item template text is not binding after selected item from the combobox.

NOTE; IsEditable field is set to true then the value is not binding.

if its false then its working fine.

I have attached the screenshot for your reference.

Kindly help me to resolve this.

Thanks,

Raja.

I have lots of windows within my app that use the radgridview. I'm getting random errors such as the attached. Your help would be appreciated. I'm using the latest version: 2022.2.621.60.

Many thanks

Rob

- Stacktrace Frames: ------------------------------------------------------------------------------
* Frame (76): TryCatchWhen | System.Windows.Threading.ExceptionWrapper
* Frame (75): InternalRealCall | System.Windows.Threading.ExceptionWrapper
* Frame (74): DispatcherCallbackOperation | MS.Win32.HwndSubclass
* Frame (73): WndProc | MS.Win32.HwndWrapper
* Frame (72): InputFilterMessage | System.Windows.Interop.HwndSource
* Frame (71): FilterMessage | System.Windows.Interop.HwndMouseInputProvider
* Frame (70): ReportInput | System.Windows.Interop.HwndMouseInputProvider
* Frame (69): ReportInput | System.Windows.Input.InputProviderSite
* Frame (68): ProcessInput | System.Windows.Input.InputManager
* Frame (67): ProcessStagingArea | System.Windows.Input.InputManager
* Frame (66): RaiseTrustedEvent | System.Windows.UIElement
* Frame (65): RaiseEventImpl | System.Windows.UIElement
* Frame (64): InvokeHandlersImpl | System.Windows.EventRoute
* Frame (63): InvokeHandler | System.Windows.RoutedEventHandlerInfo
* Frame (62): InvokeHandler | System.Windows.RoutedEventArgs
* Frame (61): InvokeEventHandler | System.Windows.Input.MouseButtonEventArgs
* Frame (60): OnMouseUpThunk | System.Windows.UIElement
* Frame (59): ReRaiseEventAs | System.Windows.UIElement
* Frame (58): InvokeHandlersImpl | System.Windows.EventRoute
* Frame (57): InvokeHandler | System.Windows.RoutedEventHandlerInfo
* Frame (56): InvokeHandler | System.Windows.RoutedEventArgs
* Frame (55): InvokeEventHandler | System.Windows.Input.MouseButtonEventArgs
* Frame (54): OnMouseLeftButtonUpThunk | System.Windows.UIElement
* Frame (53): OnMouseLeftButtonUp | System.Windows.Controls.Primitives.ButtonBase
* Frame (52): OnClick | System.Windows.Controls.Button
* Frame (51): OnClick | System.Windows.Controls.Primitives.ButtonBase
* Frame (50): RaiseEvent | System.Windows.UIElement
* Frame (49): RaiseEventImpl | System.Windows.UIElement
* Frame (48): InvokeHandlersImpl | System.Windows.EventRoute
* Frame (47): InvokeHandler | System.Windows.RoutedEventHandlerInfo
* Frame (46): SetValue | System.Windows.DependencyObject
* Frame (45): SetValueCommon | System.Windows.DependencyObject
* Frame (44): UpdateEffectiveValue | System.Windows.DependencyObject
* Frame (43): NotifyPropertyChange | System.Windows.DependencyObject
* Frame (42): OnPropertyChanged | System.Windows.FrameworkElement
* Frame (41): OnPropertyChanged | System.Windows.DependencyObject
* Frame (40): SetValue | System.Windows.DependencyObject
* Frame (39): SetValueCommon | System.Windows.DependencyObject
* Frame (38): UpdateEffectiveValue | System.Windows.DependencyObject
* Frame (37): NotifyPropertyChange | System.Windows.DependencyObject
* Frame (36): OnPropertyChanged | System.Windows.FrameworkElement
* Frame (35): OnPropertyChanged | System.Windows.DependencyObject
* Frame (34): OnIsOpenChanged | System.Windows.Controls.Primitives.Popup
* Frame (33): CreateWindow | System.Windows.Controls.Primitives.Popup
* Frame (32): SetRootVisualToPopupRoot | System.Windows.Controls.Primitives.Popup
* Frame (31): set_RootVisual | System.Windows.Interop.HwndSource
* Frame (30): set_RootVisualInternal | System.Windows.Interop.HwndSource
* Frame (29): SetLayoutSize | System.Windows.Interop.HwndSource
* Frame (28): Measure | System.Windows.UIElement
* Frame (27): MeasureCore | System.Windows.FrameworkElement
* Frame (26): MeasureOverride | System.Windows.Controls.Primitives.PopupRoot
* Frame (25): Measure | System.Windows.UIElement
* Frame (24): MeasureCore | System.Windows.FrameworkElement
* Frame (23): MeasureOverride | System.Windows.Controls.Decorator
* Frame (22): Measure | System.Windows.UIElement
* Frame (21): MeasureCore | System.Windows.FrameworkElement
* Frame (20): MeasureOverride | System.Windows.Documents.AdornerDecorator
* Frame (19): MeasureOverride | System.Windows.Controls.Decorator
* Frame (18): Measure | System.Windows.UIElement
* Frame (17): MeasureCore | System.Windows.FrameworkElement
* Frame (16): MeasureOverride | System.Windows.Controls.Control
* Frame (15): Measure | System.Windows.UIElement
* Frame (14): MeasureCore | System.Windows.FrameworkElement
* Frame (13): MeasureOverride | System.Windows.Controls.ContentPresenter
* Frame (12): MeasureElementWithSingleChild | MS.Internal.Helper
* Frame (11): Measure | System.Windows.UIElement
* Frame (10): MeasureCore | System.Windows.FrameworkElement
* Frame (9): MeasureOverride | System.Windows.Controls.Border
* Frame (8): Measure | System.Windows.UIElement
* Frame (7): MeasureCore | System.Windows.FrameworkElement
* Frame (6): MeasureOverride | System.Windows.Controls.ContentPresenter
* Frame (5): MeasureElementWithSingleChild | MS.Internal.Helper
* Frame (4): Measure | System.Windows.UIElement
* Frame (3): MeasureCore | System.Windows.FrameworkElement
* Frame (2): ApplyTemplate | System.Windows.FrameworkElement
* Frame (1): OnApplyTemplate | Telerik.Windows.Controls.GridView.FilteringControl
* Frame (0): InitializeDistinctValuesFilterClearButton | Telerik.Windows.Controls.GridView.FilteringControl
- Stacktrace Frames -------------------------------------------------------------------------------
- Exception: System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.Windows.Controls.GridView.FilteringControl.InitializeDistinctValuesFilterClearButton()
   at Telerik.Windows.Controls.GridView.FilteringControl.OnApplyTemplate()
   at System.Windows.FrameworkElement.ApplyTemplate()
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
   at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Border.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
   at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Control.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Decorator.MeasureOverride(Size constraint)
   at System.Windows.Documents.AdornerDecorator.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Decorator.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Primitives.PopupRoot.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Interop.HwndSource.SetLayoutSize()
   at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
   at System.Windows.Interop.HwndSource.set_RootVisual(Visual value)
   at System.Windows.Controls.Primitives.Popup.SetRootVisualToPopupRoot()
   at System.Windows.Controls.Primitives.Popup.CreateWindow(Boolean asyncCall)
   at System.Windows.Controls.Primitives.Popup.OnIsOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
   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 System.Windows.Controls.Primitives.ButtonBase.OnClick()
   at System.Windows.Controls.Button.OnClick()
   at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
   at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.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.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
   at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.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.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 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
- Exception Inner:

 

I try to save the map to the image like this:

    private MemoryStream LocationsToImage(ICollection<LocationType> locationCollection, Size size)
    {
        var map = new RadMap
        {
            Language = XmlLanguage.GetLanguage(CultureInfo.DefaultThreadCurrentCulture.Name),
            Width = size.Width,
            Height = size.Height
        };
        var layer = new InformationLayer();
        map.Items.Add(layer);
        MapHelper.DrawLocations(map, layer, locationCollection);

        //print 
        map.Arrange(new Rect(size));
        map.Measure(size);
        map.Provider = MapProviderFactory.Create();
        using var ms = new MemoryStream();
        map.ExportToImage(@"C:\New Test.png", true);
        return ms;
    }

 

And the result I get:

 

But if I use for a map that is displayed in the UI it will be printed properly

 

But also regarding a map that is not displayed in the UI and was created here (as in the code above) I can use PrintVisual and print it properly.

 

    private void LocationsToImage(ICollection<LocationType> locationCollection, Size size)
    {
        var map = new RadMap
        {
            Language = XmlLanguage.GetLanguage(CultureInfo.DefaultThreadCurrentCulture.Name),
            Width = size.Width,
            Height = size.Height
        };
        var layer = new InformationLayer();
        map.Items.Add(layer);
        MapHelper.DrawLocations(map, layer, locationCollection);

        //print 
        map.Arrange(new Rect(size));
        map.Measure(size);
        map.Provider = MapProviderFactory.Create();
        var pd = new PrintDialog();
        if (pd.ShowDialog().GetValueOrDefault())
        {
            pd.PrintVisual(map, string.Empty);
        }
    }

 

 

So how can I use ExportToImage for a map that I create in code and not in view?

Hello,

Until today, I was using Telerik libraries with the Visual Studio built-in extension. In other words, all the Telerik dlls were placed in a "Lib" folder and the various projects referenced them. Everything was working perfectly.

I would like to use Telerik via NuGet packages.

So I removed all references in my projects, deleted the "Lib" folder, and added the necessary NuGet packages as replacements in each projects.

The application compiles and launches perfectly.

Unfortunately, all texts (on a GridView for example) now appear in English (before, it was in French).

Looking at the "bin/Debug/fr" folder, I see that the Telerik.Windows.Controls.resources.dll file is missing. The file doesn't seem to generate when compiling. If I manually copy the file into this folder, the texts appear in French.

How do I make this happen automatically? I have the impression that the NuGet packages do not contain the resources of the different localization.

Am I doing something wrong or is it a problem with Telerik's NuGet packages?

Thanks in advance.

Hi,

when i recently use the image editor with big picture(for example 6000*5000 pixel), after drawing several rectangle using shape tool, it gave me:

System.OutOfMemoryException: Insufficient memory to continue the execution of the program.
   at System.Windows.Media.Imaging.WriteableBitmap.InitFromBitmapSource(BitmapSource source)
   at System.Windows.Media.Imaging.WriteableBitmap..ctor(BitmapSource source)
   at Telerik.Windows.Media.Imaging.RadBitmap..ctor(Int32 width, Int32 height, FrameworkElement element, Boolean measureAndArrange)
   at Telerik.Windows.Media.Imaging.Commands.DrawCommand.Execute(RadBitmap source, Object context)
   at Telerik.Windows.Media.Imaging.History.ImageHistory.Execute(IImageCommand command, Object context)
   at Telerik.Windows.Controls.RadImageEditor.ExecuteCommand(IImageCommand command, Object context)
   at Telerik.Windows.Controls.RadImageEditor.CommitTool(Boolean executeSameToolAfterCommit)
   at Telerik.Windows.Media.Imaging.Tools.DrawToolBase.InvokeEndDraw(Point point)
   at Telerik.Windows.Media.Imaging.Tools.DrawToolBase.DrawingCanvas_MouseLeftButtonUp(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.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.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
   at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.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 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

 

it seems that related to the history memory to me, based on previous discussion:

https://www.telerik.com/forums/out-of-memory-exception-when-cropping-image

but when i assgin a larger MaximumMemoryBufferSize in the imageeditor, the issue still remained, any suggestions on this?

I'm having a requirement to implement Telerik RadRichTextBox in my project. But while trying to implement, the textbox is not displaying. Please find the attached sample project for your reference. Can you please help me to resolve this issue? I've referred below link for the implementation. 

https://docs.telerik.com/devtools/wpf/controls/radrichtextbox/getting-started/getting-started

Project Name: Telerik_RichTextbox_POC

How can I change the background of it?

 

I want to change the Foreground of the button when pressed, I was able to do this for MouseOver but not for a pressed button

 

<Style TargetType="telerik:GroupHeaderButton">
    <Setter Property="helpers:ThemeHelper.CheckedBrush" Value="{StaticResource GridView_ItemBackground_Over}"/>
    <Setter Property="helpers:ThemeHelper.MouseOverBrush" Value="{StaticResource ItemBackground_MouseOver}"/>
    <Setter Property="helpers:ThemeHelper.PressedBrush" Value="{StaticResource GridView_ItemBackground_Over}"/>
    <Setter Property="Background" Value="{StaticResource AppointmentItemBackground_UnSelected}"/>
    <Setter Property="Foreground" Value="{StaticResource EditAppointmentTemplateBackGround}"/>
    <Style.Triggers>
        <Trigger Property="IsMouseOver" Value="True">
            <Setter Property="Foreground" Value="{StaticResource ControlForeground_Normal}"/>
        </Trigger>
        <Trigger Property="IsPressed" Value="True">
            <Setter Property="Foreground" Value="{StaticResource ControlForeground_Normal}"/>
        </Trigger>
    </Style.Triggers>
</Style>

 

Although I registered Trigger to IsPressed but it does nothing