DisplayUtilityAssociations.xaml

<UserControl x:Class="ArcGIS.WinUI.Samples.DisplayUtilityAssociations.DisplayUtilityAssociations"
             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>
        <DataTemplate x:Key="AssociationLegendItemTemplate">
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="30" />
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>
                <Image Width="25"
                       Height="25"
                       Source="{Binding Value}" />
                <TextBlock Grid.Column="1" Text="{Binding Key}" />
            </Grid>
        </DataTemplate>
    </UserControl.Resources>
    <Grid>
        <esriUI:MapView x:Name="MyMapView" NavigationCompleted="OnNavigationCompleted" />
        <Border Style="{StaticResource BorderStyle}">
            <StackPanel>
                <TextBlock Margin="5" Text="Utility association types" />
                <ListView x:Name="AssociationLegend"
                          Margin="5"
                          IsHitTestVisible="False"
                          ItemTemplate="{StaticResource AssociationLegendItemTemplate}" />
            </StackPanel>
        </Border>
    </Grid>
</UserControl>