DisplayDeviceLocation.xaml

<UserControl 
    x:Class="ArcGISRuntime.UWP.Samples.DisplayDeviceLocation.DisplayDeviceLocation"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
    xmlns:esri="using:Esri.ArcGISRuntime"
    xmlns:esriUI="using:Esri.ArcGISRuntime.UI.Controls" 
    mc:Ignorable="d" 
    d:DesignHeight="300" d:DesignWidth="300">
    <Grid>
        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup>
                <!-- Adapt screen to more than 780 effective pixels -->
                <VisualState>
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowWidth="720" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="appBar.(Grid.Row)" Value="0"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
        <Grid.RowDefinitions>
            <RowDefinition Height="auto" />
            <RowDefinition Height="*" />
            <RowDefinition Height="auto" />
        </Grid.RowDefinitions>
        <esriUI:MapView x:Name="MyMapView" Grid.Row="1"/>
        <CommandBar x:Name="appBar" Grid.Row="2">
            <AppBarButton Icon="Stop" Label="Stop" Click="OnStopClicked"></AppBarButton>
            <AppBarButton Icon="Target" Label="Start">
                <AppBarButton.Flyout>
                    <Flyout>
                        <ListView x:Name="locationModes" SelectionChanged="OnLocationModesSelectionChanged"/>
                    </Flyout>
                </AppBarButton.Flyout>
            </AppBarButton>
        </CommandBar>
    </Grid>
</UserControl>