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The dependency on the SharpDX library in the RadWebCam control will be replaced with SkiaSharp
The RadWebCam for WPF control currently relies on the SharpDX library to render the video feed. With 2024 Q4 we will replace SharpDX with the SkiaSharp library. This decision was taken because the SharpDX library is no longer maintained since March 2019.


General Discussions
WebCam
Martin Ivanov
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Rank 1
 asked on 10 Sep 2024
0 answers
269 views
2024 Q4 distribution changes in Telerik UI for WPF

As of 2024 Q4 (November), we will deprecate the .NET 7 distribution. This decision is rooted in our dedication to align with Microsoft’s recommended framework versions so that our products leverage the latest advancements in technology, security, and performance.  

We are aligning our product with Microsoft’s lowest-supported framework versions for .NET Framework and .NET, respectively. Please refer to the following blog post: Product Update for Enhanced Performance and Security

For more information about how to upgrade your project when a new version of the Telerik UI for WPF suite is released, you can check here: Project Migration to .NET 4.6.2 and .NET 6

General Discussions
Martin Ivanov
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Rank 1
 asked on 28 May 2024
0 answers
348 views
2024 Q2 distribution changes in Telerik UI for WPF

As of 2024 Q2, we will deprecate .NET Framework 4.0, .NET Framework 4.5, and .NET Core 3.1 distributions. This decision is rooted in our dedication to align with Microsoft’s recommended framework versions so that our products leverage the latest advancements in technology, security, and performance.

We are aligning our product with Microsoft’s lowest-supported framework versions for .NET Framework and .NET, respectively. Please refer to the following blog post:

Product Update for Enhanced Performance and Security (telerik.com)

For more information about how to upgrade your project's .NET Framework version, you can check the following MSDN article:

Migration Guide to .NET Framework 4.8, 4.7, and 4.6.2 - .NET Framework | Microsoft Learn


General Discussions
Stenly
Top achievements
Rank 1
 asked on 30 Jan 2024
1 answer
4 views
WPF RadGridView GridViewDataColumn Checkbox disapearing

I have a question about my RadGridView. It contains checkboxes, and I noticed that if I don’t click directly on the checkbox but instead on the element surrounding it, the checkbox disappears and only becomes visible again once I click on another element.

RadGriddView

  AutoGenerateColumns="False"
  CanUserDeleteRows="False"
  CanUserFreezeColumns="False"
  CanUserReorderColumns="False"
  CanUserResizeColumns="False"
  CanUserSearch="False"
  CanUserSortColumns="False"
  GridLinesVisibility="Both"
  GroupRenderMode="Flat"
  ItemsSource="{Binding Items}"
  RowIndicatorVisibility="Collapsed"
  ShowGroupPanel="False"


<t:GridViewDataColumn
    Width="*"
    MinWidth="70"
    Header="Test"
    HeaderTextAlignment="Center">
    <t:GridViewColumn.CellTemplate>
        <DataTemplate>
            <CheckBox
                HorizontalAlignment="Center"
                FontSize="16"
                IsChecked="{Binding Test1}"
                IsHitTestVisible="True"
                Tag="{Binding}" />
        </DataTemplate>
    </t:GridViewColumn.CellTemplate>
</t:GridViewDataColumn>

 

 

When I use this t:GridViewCheckBoxColumn, the behavior is not as described above. However, I have to click three times on the checkbox, once before I can set the checkmark in the checkbox.

<t:GridViewCheckBoxColumn
    MinWidth="50"
    DataMemberBinding="{Binding Test1}"
    Header="Test1" />


 

GridView
Stenly
Telerik team
 answered on 17 Sep 2025
0 answers
4 views
Dynamic item count calculation in group (RadGridView)

Hello,

I came to interesting problem of calculating correct number of items that are grouped up. I have GridView that has grouped items, however in each group there is "special" item, that points to object of different type (but derived from the base type of the ItemsSource collection). This item should not be counted into overall item count of the group, as its function is to enable user to write down some notes for each group and does not contain any production data. The calculated count is then displayed in the group header text.

My idea was to create converter, that would take Group object and return the number. The converter itself would take group.ItemCount of group and then iterate in loop over the group.Items collection and substract 1 from the count if the item is of specified type. All of this is done so that when the user searches via the inbuilt search bar in GridView, the count is always correct.

Now the problem, the gridview does no load items of groups that are not expanded (except for the first one??) and as such the converter iterates over nothing (the group.Items collection is empty) and thus the count is displayed wrong (displayed number is group.ItemCount without any substraction). Any ideas how could i work around this? I would rather avoid calculating this in viewmodel as that would require tracking the search text and then manually filtering items in collection.

 

GridView
Christofer
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Rank 1
 asked on 16 Sep 2025
2 answers
5 views
GridView
Hii,

Can someone tell me how I can remove this green line in the GridView, as well as the text shown above that is written in German? I haven’t found any way to do this, or I may have missed it in the documentation.
This green line is movable, but I have not yet found out why that is the case.

GridView
Styling
Pascal
Top achievements
Rank 2
Iron
 answered on 12 Sep 2025
1 answer
9 views
Have RadMaskedNumericInput only allow numbers greater than 0
I've seen code around that will limit RadMaskedNumericInput to be 0 or greater, but I need to exclude 0.
MaskedInput (Numeric, DateTime, Text, Currency)
Stenly
Telerik team
 answered on 10 Sep 2025
2 answers
8 views
Change color of selected/unselected in ToggleSwitchButton

Hello,

 

I'm trying to chanhe the color  of the ToggleSwitchButton.

For example; when selected it turns green, unselected is red.

 

I found this article: Styling apperance and handled as such.

This gave me 200+ lines of XAML, but I cannot easily identify what to change, pleasy some guidance.

 

I'm on 2025 Q3 for WPF


<LinearGradientBrush x:Key="ControlOuterBorder_Normal" EndPoint="0.5,1" StartPoint="0.5,0"><GradientStop Color="#FFA9BFD6"/><GradientStop Color="#FFCDDAEA" Offset="1"/></LinearGradientBrush><LinearGradientBrush x:Key="ControlBackground_Normal" EndPoint="0.5,1" StartPoint="0.5,0"><GradientStop Color="#FFFDFEFF" Offset="0"/><GradientStop Color="#FFE6F0FA" Offset="0.5"/><GradientStop Color="#FFDCE6F4" Offset="0.5"/><GradientStop Color="#FFDDE9F7" Offset="1"/></LinearGradientBrush><SolidColorBrush x:Key="ControlOuterBorder_MouseOver" Color="#FFB8D6FB"/><LinearGradientBrush x:Key="ControlBackground_MouseOver" EndPoint="0.5,1" StartPoint="0.5,0"><GradientStop Color="#FFFBFCFD" Offset="0"/><GradientStop Color="#FFF6F8FB" Offset="0.5"/><GradientStop Color="#FFEDF2F9" Offset="0.5"/><GradientStop Color="#FFE5EBF4" Offset="1"/></LinearGradientBrush><SolidColorBrush x:Key="ControlOuterBorder_Pressed" Color="#FFC0CBD9"/><LinearGradientBrush x:Key="ControlBackground_Pressed" EndPoint="0.5,1" StartPoint="0.5,0"><GradientStop Color="#FFC0CBD9" Offset="0"/><GradientStop Color="#FFE6EAEE" Offset="0.5"/></LinearGradientBrush><SolidColorBrush x:Key="ControlInnerBorder_Checked" Color="#00000000"/><LinearGradientBrush x:Key="ControlBackground_Checked" EndPoint="0.5,1" StartPoint="0.5,0"><GradientStop Color="#FFC0CBD9" Offset="0"/><GradientStop Color="#FFE6EAEE" Offset="0.5"/></LinearGradientBrush><Style x:Key="VATToggleSwitchButton" TargetType="{x:Type telerik:RadToggleSwitchButton}">
    <Setter Property="Padding" Value="4 0"/>
    <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
    <Setter Property="Foreground" Value="{StaticResource ControlForeground_Normal}"/>
    <Setter Property="FontSize" Value="12"/>
    <Setter Property="FontFamily" Value="Segoe UI"/>
    <Setter Property="VerticalContentAlignment" Value="Center"/>
    <Setter Property="HorizontalContentAlignment" Value="Left"/>
    <Setter Property="Background" Value="{StaticResource ToggleSwitchButton_TrackBackground}"/>
    <Setter Property="BorderBrush" Value="{StaticResource ControlOuterBorder_Normal}"/>
    <Setter Property="BorderThickness" Value="1"/>
    <Setter Property="Cursor" Value="Hand"/>
    <Setter Property="TrackHeight" Value="20"/>
    <Setter Property="ThumbHeight" Value="20"/>
    <Setter Property="ThumbWidth" Value="20"/>
    <Setter Property="CornerRadius" Value="2"/>
    <Setter Property="TrackWidth" Value="60"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type telerik:RadToggleSwitchButton}">
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto"/>
                        <ColumnDefinition Width="{Binding TrackWidth, RelativeSource={RelativeSource Mode=TemplatedParent}}"/>
                        <ColumnDefinition Width="Auto"/>
                    </Grid.ColumnDefinitions>
                    <ContentPresenter x:Name="UncheckedContent" ContentStringFormat="{TemplateBinding ContentStringFormat}" ContentTemplate="{TemplateBinding UncheckedContentTemplate}" Grid.Column="2" Content="{TemplateBinding UncheckedContent}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                    <Grid Grid.Column="1" Height="{TemplateBinding TrackHeight}" SnapsToDevicePixels="True">
                        <Border x:Name="TrackBackground" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="{TemplateBinding CornerRadius}" Opacity="0">
                            <Rectangle x:Name="TrackInnerBackground" Fill="{TemplateBinding Background}" RadiusX="{TemplateBinding CheckedTrackRadius}" RadiusY="{TemplateBinding CheckedTrackRadius}" Stroke="{StaticResource ToggleSwitchButton_TrackInnerBorder}" StrokeThickness="0"/>
                        </Border>
                        <Border x:Name="UncheckedTrackBackground" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="{TemplateBinding CornerRadius}">
                            <Rectangle x:Name="UncheckedTrackInnerBackground" Fill="{StaticResource ToggleSwitchButton_TrackBackground_Unchecked}" RadiusX="{TemplateBinding UncheckedTrackRadius}" RadiusY="{TemplateBinding UncheckedTrackRadius}" Stroke="{StaticResource ToggleSwitchButton_TrackInnerBorder}" StrokeThickness="0"/>
                        </Border>
                        <Border x:Name="PART_Thumb" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="2" HorizontalAlignment="Left" Height="{TemplateBinding ThumbHeight}" RenderTransformOrigin="0.5,0.5" Width="{TemplateBinding ThumbWidth}">
                            <Border.RenderTransform>
                                <TranslateTransform X="0" Y="0"/>
                            </Border.RenderTransform>
                            <Grid>
                                <Rectangle x:Name="ThumbInnerRectangle" Fill="{StaticResource ControlBackground_Checked}" Stroke="{StaticResource ControlInnerBorder_Checked}" StrokeThickness="1"/>
                                <Path Height="9" Stroke="{TemplateBinding Foreground}" Width="6"/>
                            </Grid>
                        </Border>
                    </Grid>
                    <ContentPresenter x:Name="CheckedContent" ContentStringFormat="{TemplateBinding ContentStringFormat}" ContentTemplate="{TemplateBinding CheckedContentTemplate}" Grid.Column="2" Content="{TemplateBinding CheckedContent}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                </Grid>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsChecked" Value="False">
                        <Setter Property="BorderBrush" TargetName="PART_Thumb" Value="{StaticResource ControlOuterBorder_Normal}"/>
                        <Setter Property="Fill" TargetName="ThumbInnerRectangle" Value="{StaticResource ControlBackground_Normal}"/>
                    </Trigger>
                    <Trigger Property="IsChecked" Value="True">
                        <Setter Property="Opacity" TargetName="TrackBackground" Value="1"/>
                        <Setter Property="Opacity" TargetName="UncheckedTrackBackground" Value="0"/>
                    </Trigger>
                    <Trigger Property="IsChecked" Value="{x:Null}">
                        <Setter Property="BorderBrush" TargetName="PART_Thumb" Value="{StaticResource ControlOuterBorder_Normal}"/>
                        <Setter Property="Fill" TargetName="ThumbInnerRectangle" Value="{StaticResource ControlBackground_Normal}"/>
                        <Setter Property="Opacity" TargetName="TrackBackground" Value="0"/>
                        <Setter Property="Opacity" TargetName="UncheckedTrackBackground" Value="1"/>
                    </Trigger>
                    <MultiTrigger>
                        <MultiTrigger.Conditions>
                            <Condition Property="IsKeyboardFocused" Value="True"/>
                            <Condition Property="IsEnabled" Value="True"/>
                        </MultiTrigger.Conditions>
                        <Setter Property="BorderBrush" TargetName="PART_Thumb" Value="{StaticResource ToggleSwitchButton_ThumbBorder_Focused}"/>
                    </MultiTrigger>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter Property="BorderBrush" TargetName="PART_Thumb" Value="{StaticResource ControlOuterBorder_MouseOver}"/>
                        <Setter Property="Fill" TargetName="ThumbInnerRectangle" Value="{StaticResource ControlBackground_MouseOver}"/>
                    </Trigger>
                    <Trigger Property="IsPressed" Value="True">
                        <Setter Property="BorderBrush" TargetName="PART_Thumb" Value="{StaticResource ControlOuterBorder_Pressed}"/>
                        <Setter Property="Fill" TargetName="ThumbInnerRectangle" Value="{StaticResource ControlBackground_Pressed}"/>
                    </Trigger>
                    <Trigger Property="IsEnabled" Value="False">
                        <Setter Property="Opacity" TargetName="UncheckedContent" Value="0.3"/>
                        <Setter Property="Opacity" TargetName="CheckedContent" Value="0.3"/>
                        <Setter Property="Opacity" TargetName="PART_Thumb" Value="0.3"/>
                        <Setter Property="BorderBrush" TargetName="PART_Thumb" Value="{StaticResource ToggleSwitchButton_TrackBorder_Disabled}"/>
                        <Setter Property="Stroke" TargetName="ThumbInnerRectangle" Value="{StaticResource ToggleSwitchButton_ThumbBackground_Disabled}"/>
                        <Setter Property="Fill" TargetName="ThumbInnerRectangle" Value="{StaticResource ToggleSwitchButton_ThumbBackground_Disabled}"/>
                        <Setter Property="BorderBrush" TargetName="TrackBackground" Value="{StaticResource ToggleSwitchButton_TrackBorder_Disabled}"/>
                        <Setter Property="Stroke" TargetName="TrackInnerBackground" Value="{StaticResource ToggleSwitchButton_ThumbBackground_Disabled}"/>
                        <Setter Property="Fill" TargetName="TrackInnerBackground" Value="{StaticResource ToggleSwitchButton_TrackBackground_Unchecked}"/>
                        <Setter Property="BorderBrush" TargetName="UncheckedTrackBackground" Value="{StaticResource ToggleSwitchButton_TrackBorder_Disabled}"/>
                        <Setter Property="Stroke" TargetName="UncheckedTrackInnerBackground" Value="{StaticResource ToggleSwitchButton_ThumbBackground_Disabled}"/>
                        <Setter Property="Fill" TargetName="UncheckedTrackInnerBackground" Value="{StaticResource ToggleSwitchButton_TrackBackground_Unchecked}"/>
                    </Trigger>
                    <MultiDataTrigger>
                        <MultiDataTrigger.Conditions>
                            <Condition Binding="{Binding IsChecked, RelativeSource={RelativeSource Mode=Self}}" Value="True"/>
                            <Condition Value="True">
                                <Condition.Binding>
                                    <MultiBinding Converter="{StaticResource MultiBindingBooleanOrConverter}" Mode="OneWay">
                                        <Binding ConverterParameter="Left" Converter="{StaticResource EnumToBooleanConverter}" Mode="OneWay" Path="ContentPosition" RelativeSource="{RelativeSource Mode=Self}"/>
                                        <Binding ConverterParameter="Right" Converter="{StaticResource EnumToBooleanConverter}" Mode="OneWay" Path="ContentPosition" RelativeSource="{RelativeSource Mode=Self}"/>
                                    </MultiBinding>
                                </Condition.Binding>
                            </Condition>
                        </MultiDataTrigger.Conditions>
                        <Setter Property="Visibility" TargetName="UncheckedContent" Value="Hidden"/>
                    </MultiDataTrigger>
                    <MultiDataTrigger>
                        <MultiDataTrigger.Conditions>
                            <Condition Binding="{Binding IsChecked, RelativeSource={RelativeSource Mode=Self}}" Value="False"/>
                            <Condition Value="True">
                                <Condition.Binding>
                                    <MultiBinding Converter="{StaticResource MultiBindingBooleanOrConverter}" Mode="OneWay">
                                        <Binding ConverterParameter="Left" Converter="{StaticResource EnumToBooleanConverter}" Mode="OneWay" Path="ContentPosition" RelativeSource="{RelativeSource Mode=Self}"/>
                                        <Binding ConverterParameter="Right" Converter="{StaticResource EnumToBooleanConverter}" Mode="OneWay" Path="ContentPosition" RelativeSource="{RelativeSource Mode=Self}"/>
                                    </MultiBinding>
                                </Condition.Binding>
                            </Condition>
                        </MultiDataTrigger.Conditions>
                        <Setter Property="Visibility" TargetName="CheckedContent" Value="Hidden"/>
                    </MultiDataTrigger>
                    <MultiDataTrigger>
                        <MultiDataTrigger.Conditions>
                            <Condition Binding="{Binding IsChecked, RelativeSource={RelativeSource Mode=Self}}" Value="{x:Null}"/>
                            <Condition Value="True">
                                <Condition.Binding>
                                    <MultiBinding Converter="{StaticResource MultiBindingBooleanOrConverter}" Mode="OneWay">
                                        <Binding ConverterParameter="Left" Converter="{StaticResource EnumToBooleanConverter}" Mode="OneWay" Path="ContentPosition" RelativeSource="{RelativeSource Mode=Self}"/>
                                        <Binding ConverterParameter="Right" Converter="{StaticResource EnumToBooleanConverter}" Mode="OneWay" Path="ContentPosition" RelativeSource="{RelativeSource Mode=Self}"/>
                                    </MultiBinding>
                                </Condition.Binding>
                            </Condition>
                        </MultiDataTrigger.Conditions>
                        <Setter Property="Visibility" TargetName="CheckedContent" Value="Hidden"/>
                        <Setter Property="Visibility" TargetName="UncheckedContent" Value="Hidden"/>
                    </MultiDataTrigger>
                    <Trigger Property="ContentPosition" Value="Left">
                        <Setter Property="Grid.Column" TargetName="CheckedContent" Value="0"/>
                        <Setter Property="Grid.Column" TargetName="UncheckedContent" Value="0"/>
                        <Setter Property="HorizontalContentAlignment" Value="Right"/>
                    </Trigger>
                    <Trigger Property="ContentPosition" Value="Both">
                        <Setter Property="Grid.Column" TargetName="UncheckedContent" Value="0"/>
                        <Setter Property="Grid.Column" TargetName="CheckedContent" Value="2"/>
                        <Setter Property="HorizontalAlignment" TargetName="CheckedContent" Value="Right"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
    <Setter Property="animation:AnimationManager.AnimationSelector">
        <Setter.Value>
            <animation:AnimationSelector>
                <animation:AnimationGroup AnimationName="CheckedAnimation">
                    <animation:MoveAnimation Duration="0:0:0.4" TargetElementName="PART_Thumb">
                        <animation:MoveAnimation.Easing>
                            <QuadraticEase EasingMode="EaseInOut"/>
                        </animation:MoveAnimation.Easing>
                    </animation:MoveAnimation>
                    <animation:FadeAnimation Direction="Out" Duration="0:0:0.4" TargetElementName="UncheckedTrackBackground"/>
                    <animation:FadeAnimation Direction="In" Duration="0:0:0.4" TargetElementName="TrackBackground"/>
                </animation:AnimationGroup>
                <animation:AnimationGroup AnimationName="UncheckedAnimation">
                    <animation:MoveAnimation Duration="0:0:0.4" TargetElementName="PART_Thumb">
                        <animation:MoveAnimation.Easing>
                            <QuadraticEase EasingMode="EaseInOut"/>
                        </animation:MoveAnimation.Easing>
                    </animation:MoveAnimation>
                    <animation:FadeAnimation Direction="Out" Duration="0:0:0.4" TargetElementName="TrackBackground"/>
                    <animation:FadeAnimation Direction="In" Duration="0:0:0.4" TargetElementName="UncheckedTrackBackground"/>
                </animation:AnimationGroup>
                <animation:AnimationGroup AnimationName="IsThreeStateUncheckedAnimation">
                    <animation:MoveAnimation Duration="0:0:0.4" TargetElementName="PART_Thumb">
                        <animation:MoveAnimation.Easing>
                            <QuadraticEase EasingMode="EaseInOut"/>
                        </animation:MoveAnimation.Easing>
                    </animation:MoveAnimation>
                </animation:AnimationGroup>
                <animation:AnimationGroup AnimationName="IndeterminateAnimation">
                    <animation:MoveAnimation Duration="0:0:0.4" TargetElementName="PART_Thumb">
                        <animation:MoveAnimation.Easing>
                            <QuadraticEase EasingMode="EaseInOut"/>
                        </animation:MoveAnimation.Easing>
                    </animation:MoveAnimation>
                    <animation:FadeAnimation Direction="Out" Duration="0:0:0.4" TargetElementName="TrackBackground"/>
                    <animation:FadeAnimation Direction="In" Duration="0:0:0.4" TargetElementName="UncheckedTrackBackground"/>
                </animation:AnimationGroup>
            </animation:AnimationSelector>
        </Setter.Value>
    </Setter>
 
Jeroen

Styling
Jeroen
Top achievements
Rank 1
Iron
Iron
 answered on 08 Sep 2025
0 answers
11 views
how to compile WPF project with environment variables but authentication failes

Hello. I have recently needed to repave my dev box. I got my latest code, setup two environment variables (username and password with the once only visible API key), as well as still have the nuget.config file and adding the proper telerik nuget server to the nuget manager. Unfortunately, I still have something wrong because when I compile, I get asked for my username and password what looks like it's the telerik nuget calls. Please help, this is driving me crazy. I'm just not able to figure this out.

 

I have ensured the nugetconfig is using the right\same environment variables as I have setup in the system environment. And the values are correct. Please help.

Licensing
Peter
Top achievements
Rank 1
Iron
Iron
 asked on 05 Sep 2025
1 answer
13 views
RadGlyph with Font Awesome Duotone font

Can RadGlyph work with Font Awesome's Duotone font? For example, we want to render: https://fontawesome.com/icons/house?f=duotone&s=solid

I've tried various things, including:

                <Grid>
                    <!-- Secondary (back) layer -->
                    <telerik:RadGlyph
                        Font="fads"
                        FontSize="40"
                        Glyph="&#x10F015;"
                        Foreground="Red" />
                    <!-- Primary (front) layer -->
                    <telerik:RadGlyph
                        Font="fads"
                        FontSize="40"
                        Glyph="&#xF015;"
                        Foreground="Blue" />
                </Grid>

This just renders an all blue house.

Reversing the elements:

            <telerik:RadTabItem.Content>
                <Grid>
                    <!-- Primary (front) layer -->
                    <telerik:RadGlyph
                        Font="fads"
                        FontSize="40"
                        Glyph="&#xF015;"
                        Foreground="Blue" />
                    <!-- Secondary (back) layer -->
                    <telerik:RadGlyph
                        Font="fads"
                        FontSize="40"
                        Glyph="&#x10F015;"
                        Foreground="Red" />
                </Grid>

I'm using the same technique I use to register regular Font Awesome fonts and have verified the codepoints exist:

        var solidDuotoneFontFilePath = Path.Combine(directory, "Resources/Fonts", "Font Awesome 7 Duotone-Solid-900.otf");
        var solidDuotoneFontUri = new Uri(solidDuotoneFontFilePath, UriKind.Absolute);
        var solidDuotoneFontFamily = new FontFamily(solidDuotoneFontUri, "./#Font Awesome 7 Duotone Solid");
        RadGlyph.RegisterFont(solidDuotoneFontFamily, "fads");

        bool HasChar(FontFamily fam, int codePoint)
        {
            var tf = new Typeface(fam, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);
            if (!tf.TryGetGlyphTypeface(out var gtf)) return false;
            return gtf.CharacterToGlyphMap.ContainsKey(codePoint);
        }

        Debug.WriteLine($"Primary F015 present: {HasChar(solidDuotoneFontFamily, 0xF015)}");
        Debug.WriteLine($"Secondary 10F015 present: {HasChar(solidDuotoneFontFamily, 0x10F015)}");

General Discussions
Martin Ivanov
Telerik team
 answered on 02 Sep 2025
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