We have a strange issue that I've not seen posted or reported anywhere after two days of research

We have RadGridViews where we manage persistence using the Telerik PersistenceManager Class.

The grids are set as follows

    theGrid.ShowGroupPanel = false;
    theGrid.FilteringMode = Telerik.Windows.Controls.GridView.FilteringMode.FilterRow;
    theGrid.CanUserGroupColumns = false;
    theGrid.CanUserReorderColumns = true;

We gather data from a web service in the form of a data table and bind to the Grid.

When a filter is applied at the column level (for example a part number using the "Is Equal To"  filter) we save the grid stream, submit the query, retrieve the data, bind to the grid, Reload using the persistence manager.  

pseudo code

• Gather Filter info
• Save aStream
  
• Get Data
• Bind
• PersistenceManager.Load(theGrid, astream);
  
  

The strange behavior is that I can consistently filter on a particular part number (String) and everything works as expected (A single result in the grid), but another part number results in a blank grid after calling the Manager.Load() code.  

In the second scenario, the underlying data table has one row, but it does not display in the grid.  If I comment out the code to load, then the value displays.  Using this, we lose the persistence, and can't "Clear filter" at the column level.

Long story short, the PersistenceManager.Load(theGrid, astream); seems to be failing, resulting in a blank Grid even though the underlying data table has one row.  Since this is Telerik code, we have no way to debug it.

Thanks in advance for any help.  I've attached a screen shot of the resulting grid, when the "Load" fails

I have a problem with RadNumericUpDown control. I'm not able to display edge values of double type (e.g. NaN or Infinity). Every time I try to bind to property with these values I've got a Binding error.

Is it even possible to achieve it utilizing RadNumericUpDown?

Thanks!

My requirement is to place a set of RadGridView horizontally, there's a ScrollViewer and ItemsControl, see code below.

 <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Disabled">
	<Grid>
		<ItemsControl Name="GridItemsControl" HorizontalAlignment="Left" HorizontalContentAlignment="Left"
					  ItemsSource="{Binding Results}">
			<ItemsControl.ItemsPanel>
				<ItemsPanelTemplate x:Uid="ItemsPanelTemplate_1" x:Name="GridItemPanelTemplate">
					<DockPanel x:Uid="DockPanel_1" />
				</ItemsPanelTemplate>
			</ItemsControl.ItemsPanel>
			<ItemsControl.ItemTemplate>
				<DataTemplate x:Uid="DataTemplate_5">
					<telerik:RadGridView Grid.Row="0"
									 Margin="8"
							 ItemsSource="{Binding Items}" 
							 AutoGenerateColumns="False" 
							 IsReadOnly="True"
							 GroupRenderMode="Flat"
							 ShowGroupPanel="False"
							 CanUserSortColumns="False" 
							 ShowColumnSortIndexes="False"
							 RowIndicatorVisibility="Collapsed" 
							 CanUserGroupColumns="False"
							 SelectionMode="Extended"
							 ClipboardCopyMode="All" >
						<telerik:RadGridView.Columns>
							<telerik:GridViewDataColumn Width="Auto"
														Header="Depth"
												IsFilterable="False"
												ShowToolTipOnTrimmedText="True" 
												TextAlignment="Right"
												DataMemberBinding="{Binding Depth}">
							   
							</telerik:GridViewDataColumn>
						</telerik:RadGridView.Columns>
					</telerik:RadGridView>
				</DataTemplate>
			</ItemsControl.ItemTemplate>
		</ItemsControl>
	</Grid>
</ScrollViewer>

The UI got stuck while the program was running, but when replace RadGridView by DataGrid, it can run, and if I replace the Grid with ListView, the UI can work, but the function not meet my requirement

Hello everyone. I have this problem when generating a table of contents. It is happening to me that when the document is exported to Word, for some reason (or if it is the correct behavior) the text is scrolling down on the next page. What I want to achieve is that the TOC can be generated if scrolling down occurs or, failing that, eliminate the space between the phrase "GENERAL CHARACTERISTICS" and the top of the header of that page. The document is already created and is imported into the application. I'm using an example that I found in the forum (I don't remember the name of the person, credits to him) and I'm adapting it to what I need

I have been researching the way to do it and I think with "Multi-Range Selection"
(https://docs.telerik.com/devtools/wpf/controls/radrichtextbox/features/selection?&_ga=2.154034736.904289798.1655964538-1262658420.1654800489#members-of-documentselection) between the phrase and the last element of the TOC would work but I haven't managed to capture the last element of the TOC, so I'm stuck with that part. Any idea or way I can take to eliminate that generated (dynamic) space between the phrase the following sheet and the header of that page.

Attached functional solution for testing and images.

Thank you very much

Hi

I've setup a simple project using a RadRibbonWindow with a ribbon and a few controls. I'm trying to toggle between Light and Dark themes using the StyleManager which is working for the controls but not the Window (Title bar etc).

I've gone through a few articles including this one and threads on the forum including this one. Unfortunately I can't get the Window to change theme. Any help would be much appreciated.

Thanks Miles

   This question is for Telerik UI for WPF, version R2 2022.  Development environment is Windows 10 Pro 64-bit, Visual Studio 2022 64-bit version 17.2.2.  WPF application targeting .NET Framework 4.8.

I use many Telerik RadExpanders throughout my application.  Rather than style the header of each one individually, I would like to apply a master style to the Application.xaml so it will apply to all of them.  

   An example of one of my RadExpanders is:

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" 

        <telerik:RadExpander x:Name="radExpGeneral" IsExpanded="True" 
                             telerik:AnimationManager.IsAnimationEnabled="False" telerikControls:StyleManager.Theme="Office_Blue">
            <telerik:RadExpander.Header>
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="Steps"/>
                </StackPanel>
            </telerik:RadExpander.Header>
        </telerik:RadExpander>

   I'm attempting to style with the following in my Application.xaml:

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" 

        <Style TargetType="{x:Type telerik:RadExpander}">
            <Style.Resources>
                <Style TargetType="{x:Type HeaderedContentControl}">
                    <Style.Resources>
                        <Style TargetType="{x:Type TextBlock}">
                            <Setter Property="FontSize" Value="12"/>
                            <Setter Property="FontWeight" Value="DemiBold"/>
                        </Style>
                    </Style.Resources>
                </Style>
            </Style.Resources>
        </Style>

   The idea is that this style first targets all RadExpanders, then targets only the header, then applies the style to the textblocks inside of it.  The problem seems to be targeting the header only, not the contents.  This style does not work.  Can anyone advise how to target just the radexpander headers?  Thank you!

Failed to focus RadWatermarkTextBox

<telerik:RadDropDownButton Margin="10 0" 
                        DropDownIndicatorVisibility="Collapsed"
                        DropDownPlacement="Mouse">
    <telerik:RadDropDownButton.DropDownContent>
        <StackPanel Orientation="Horizontal">
            <telerik:RadButton Click="AddLocation_OnClick"/>
            <telerik:RadWatermarkTextBox 
                    Width="100" 
                    Loaded="RadWatermarkTextBox_Loaded"/>
        </StackPanel>
    </telerik:RadDropDownButton.DropDownContent>
</telerik:RadDropDownButton>

Application simple crush when try to load this component. 
This can occur only on poor computers. 
What can be a problem ?  Any suggestion.

Event time    6/20/2022, 9:21:02.512 AM (Local time)    
Message    System.OutOfMemoryException: Eine Ausnahme vom Typ "System.OutOfMemoryException" wurde ausgelöst.    
Exception type    System.OutOfMemoryException    
Failed method    Telerik.Windows.Controls.AutomationExtensions.GetBaseControlItemStatus    
Problem Id    System.OutOfMemoryException at Telerik.Windows.Controls.AutomationExtensions.GetBaseControlItemStatus    
Assembly    Telerik.Windows.Controls, Version=2019.1.220.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7    
Severity level    Critical    
Telemetry type    exception    
Device type    PC    
Client IP address    0.0.0.0    
Country or region    United Kingdom    
Role instance    DEM5CG9125VHX.int.cpaglobal.net    
SDK version    nlog:2.17.0-146    
Sample rate    1    
Custom Properties
LoggerName    error    
threadid    1    
Message    A fatal error has occured. The application will be terminated.    

System.OutOfMemoryException:
   at System.Text.StringBuilder..ctor (mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089)
   at System.Windows.ThicknessConverter.ToString (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Thickness.ToString (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Telerik.Windows.Controls.AutomationExtensions.GetBaseControlItemStatus (Telerik.Windows.Controls, Version=2019.1.220.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
   at Telerik.Windows.Automation.Peers.GridViewDataControlAutomationPeer.GetItemStatusCore (Telerik.Windows.Controls.GridView, Version=2019.1.220.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
   at Telerik.Windows.Automation.Peers.RadGridViewAutomationPeer.GetItemStatusCore (Telerik.Windows.Controls.GridView, Version=2019.1.220.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.ContextLayoutManager.fireAutomationEvents (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.ContextLayoutManager.UpdateLayout (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.UIElement.UpdateLayout (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Interop.HwndSource.Process_WM_SIZE (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Interop.HwndSource.LayoutFilterMessage (PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at MS.Win32.HwndWrapper.WndProc (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)