We recently (a few months ago) switched from Q3 2017 to R1 2019 SP1, and traced the origin of this exception to switching to the new version. I.e. it did not have this issue with the older version.

We are using implicit styles and it only happens in the 2013 theme, at least among the themes that we use.

If we press Alt, and then "F" to get to the backstage, we get the following exception. After the exception everything works normally, but you have to press Alt again to get the access text to show on the backstage.

This control has been working fine until today, but now it cannot be displayed for some reason.  This occurred after I added an empty WPF Custom Control Library project to the solution, which I have since removed...

The element "acbSelectPerson" could not be displayed because of a problem with Telerik.Controls.RadAutoCompleteBox:

InvalidCastException:

[A]Telerik.Windows.Controls.RadListBox cannot be cast to [B]Telerik.Windows.Controls.RadListBox. Type A originates from 'Telerik.Windows.Controls, Version=2016.2.613.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7' in the context 'LoadFrom' at location 'C:\Program Files (x86)\Telerik\UI for WPF Q2 2016\Binaries\WPF45\Telerik.Windows.Controls.dll'. Type B originates from 'Telerik.Windows.Controls, Version=2016.2.613.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7' in the context 'LoadNeither' at location 'C:\Users\000105261\AppData\Local\Microsoft\VisualStudio\14.0\Designer\ShadowCache\13qxpo3c.c3s\4xmqqihl.1si\Telerik.Windows.Controls.dll'.

Stack Trace:

   at Telerik.Windows.Controls.RadAutoCompleteBox.InitializeItemsControlPart()
   at Telerik.Windows.Controls.RadAutoCompleteBox.OnApplyTemplate()
   at System.Windows.FrameworkElement.ApplyTemplate()
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.DockPanel.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 System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged)
   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.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.Grid.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 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.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged)
   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.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)

Is there a sample of using guage as aircraft horizon that supported roll and pitch values?

Thanks

I'm using the RadGridView with a dynamic object binding in order to show a grid of business objects (rows), each with properties (columns). The properties are not known before the business objects are selected.

Each property has its own viewmodel and related DataTemplate.

The GridCellPropertyContainerViewModel we are using for each grid cell encapsulates the relevant PropertyContent, so its DataTemplate uses a ContentControl, like so:

In my code-behind for the following XAML fragment, I would like to do "MyTextBox.Focus()", but MyTextBox is not accessible. Is there a way I can access it?

    <Grid>
        <telerik:RadPropertyGrid Item="{Binding}"
                                 RenderMode="Flat"
                                 AutoGeneratePropertyDefinitions="False"
                                 DescriptionPanelVisibility="Collapsed"
                                 SearchBoxVisibility="Collapsed"
                                 SortAndGroupButtonsVisibility="Collapsed"
                                 FieldIndicatorVisibility="Collapsed"
                                 Loaded="RadPropertyGrid_Loaded"
                                 LabelColumnWidth="150">
            <telerik:RadPropertyGrid.PropertyDefinitions>
                <telerik:PropertyDefinition DisplayName="Text"
                                            GroupName="Text Properties"
                                            OrderIndex="0">
                    <telerik:PropertyDefinition.EditorTemplate>
                        <DataTemplate>
                            <TextBox x:Name="MyTextBox"
                                     TextWrapping="Wrap"
                                     AcceptsReturn="True"
                                     AcceptsTab="True"
                                     Height="60"
                                     VerticalContentAlignment="Top"
                                     Text="{Binding Text, UpdateSourceTrigger=PropertyChanged}"/>
                        </DataTemplate>
                    </telerik:PropertyDefinition.EditorTemplate>
                </telerik:PropertyDefinition>
            </telerik:RadPropertyGrid.PropertyDefinitions>
        </telerik:RadPropertyGrid>
    </Grid>

Hey,

how can I adjust position of pasted element on diagram? Currently it's exactly in the same place as the copied element and it should be better to slightly move it to the right and down, so user will see the copy-paste action actually completed.

Any ideas?

Jakub

Hi, i have massive problem.

If you only run the image editor, it works fine.

However, when i load an image editor from another program, i can not see the component values. Please check attached file.

Please i need your help. 

I look forward to your feedback.

Thanks

Few of our customers sometimes experience the exception above (I assume it doesn't always happen to them), and we get the crash report through our diagnostics system.

The stack trace is:

  at System.Windows.Freezable.RemoveContextInformation(DependencyObject context, DependencyProperty property)\r\n   at System.Windows.Freezable.RemoveInheritanceContext(DependencyObject context, DependencyProperty property)\r\n   at System.Windows.DependencyObject.RemoveSelfAsInheritanceContext(DependencyObject doValue, DependencyProperty dp)\r\n   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)\r\n   at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)\r\n   at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)\r\n   at Telerik.Windows.Controls.RadRibbonWindow.SetThemeTemplate(RadRibbonWindow ribWin)\r\n   at Telerik.Windows.Controls.RadRibbonWindow.OnApplyTemplate()\r\n   at System.Windows.FrameworkElement.ApplyTemplate()\r\n   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)\r\n   at System.Windows.UIElement.Measure(Size availableSize)\r\n   at System.Windows.Interop.HwndSource.Process_WM_SIZE(UIElement rootUIElement, IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam)\r\n   at System.Windows.Interop.HwndSource.LayoutFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)\r\n   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)\r\n   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)\r\n   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)\r\n   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

The problem looks like coming from:

RadRibbonWindow.SetThemeTemplate

Are you aware of issues that can cause it?

Thanks.