DistanceMeasurement.xaml

<UserControl x:Class="ArcGIS.WinUI.Samples.DistanceMeasurement.DistanceMeasurement"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:esriUI="using:Esri.ArcGISRuntime.UI.Controls">
    <UserControl.Resources>
        <Style TargetType="TextBlock">
            <Setter Property="Margin" Value="0,5,0,5" />
            <Setter Property="VerticalAlignment" Value="Center" />
        </Style>
    </UserControl.Resources>
    <Grid>
        <esriUI:SceneView x:Name="MySceneView" />
        <Border Style="{StaticResource BorderStyle}">
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                </Grid.RowDefinitions>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*" />
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>
                <!--  Labels  -->
                <TextBlock x:Name="HelpTextBlock"
                           Grid.Row="0"
                           Grid.Column="0"
                           Grid.ColumnSpan="2"
                           FontWeight="SemiBold"
                           Text="Tap 'New measurement' to start."
                           TextWrapping="WrapWholeWords" />
                <TextBlock Grid.Row="1"
                           Grid.Column="0"
                           Text="Direct" />
                <TextBlock Grid.Row="2"
                           Grid.Column="0"
                           Text="Horizontal" />
                <TextBlock Grid.Row="3"
                           Grid.Column="0"
                           Text="Vertical" />

                <!--  Controls  -->
                <TextBlock x:Name="DirectMeasureTextBlock"
                           Grid.Row="1"
                           Grid.Column="1" />
                <TextBlock x:Name="HorizontalMeasureTextBlock"
                           Grid.Row="2"
                           Grid.Column="1" />
                <TextBlock x:Name="VerticalMeasureTextBlock"
                           Grid.Row="3"
                           Grid.Column="1" />
                <ComboBox x:Name="UnitSystemCombo"
                          Grid.Row="4"
                          Grid.Column="0"
                          Grid.ColumnSpan="2"
                          Margin="0,5,0,5"
                          HorizontalAlignment="Stretch" />
                <Button x:Name="NewMeasureButton"
                        Grid.Row="5"
                        Grid.Column="0"
                        Grid.ColumnSpan="2"
                        Margin="0,5,0,0"
                        HorizontalAlignment="Stretch"
                        Click="NewMeasureButton_OnClick"
                        Content="New measurement"
                        IsEnabled="False" />
            </Grid>
        </Border>
    </Grid>
</UserControl>