MainWindow.xaml

<Window x:Class="EditorDemo.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:EditorDemo"
        xmlns:esri="http://schemas.esri.com/arcgis/runtime/2013"
       xmlns:Behaviors="http://schemas.microsoft.com/xaml/behaviors"
        mc:Ignorable="d"
        Title="Geometry Editor Sample" Height="450" Width="800">
    <Window.Resources>
        <local:MapViewModel x:Key="VM" />
        <local:BoolToVisibilityConverter x:Key="converter" />
    </Window.Resources>
    <Grid DataContext="{StaticResource VM}">


        <esri:MapView Map="{Binding Map, Mode=OneWay}" x:Name="mapView"
                      esri:GeoViewController.GeoViewController="{Binding Controller, Source={StaticResource VM}}"
                      GraphicsOverlays="{Binding GraphicsOverlays, Mode=OneWay}" 
                      GeometryEditor="{Binding GeometryEditor, ElementName=editor, Mode=OneWay}" >
            <Behaviors:Interaction.Triggers>
                <Behaviors:EventTrigger EventName="GeoViewTapped" >
                    <Behaviors:InvokeCommandAction Command="{Binding GeoViewTappedCommand}" PassEventArgsToCommand="True" />
                </Behaviors:EventTrigger>
            </Behaviors:Interaction.Triggers>
        </esri:MapView>

        <Border Background="White" BorderThickness="1" BorderBrush="Black" Margin="20" HorizontalAlignment="Right" VerticalAlignment="Top" CornerRadius="2">

            <Behaviors:Interaction.Behaviors>
                <Behaviors:MouseDragElementBehavior ConstrainToParentBounds="True" />
            </Behaviors:Interaction.Behaviors>
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                </Grid.RowDefinitions>
                <Border Background="CornflowerBlue" Padding="5,1,0,2">
                    <TextBlock Text="Geometry Editor" Foreground="White" FontWeight="SemiBold" />
                </Border>
                <local:EditorToolbar x:Name="editor" GeoElement="{Binding EditFeatureSelection, Source={StaticResource VM}}"
                                 GraphicsOverlays="{Binding GraphicsOverlays, ElementName=mapView, Mode=OneWay}"
                                 Grid.Row="1" Margin="2">
                    <Behaviors:Interaction.Triggers>
                        <Behaviors:EventTrigger EventName="EditingCompleted" >
                            <Behaviors:InvokeCommandAction Command="{Binding EditingCompletedCommand, Source={StaticResource VM}}" PassEventArgsToCommand="True" />
                        </Behaviors:EventTrigger>
                        <Behaviors:EventTrigger EventName="EditingCancelled" >
                            <Behaviors:InvokeCommandAction Command="{Binding EditingCancelledCommand, Source={StaticResource VM}}" />
                        </Behaviors:EventTrigger>
                    </Behaviors:Interaction.Triggers>
                </local:EditorToolbar>
            </Grid>
        </Border>

        <Border Background="White" BorderThickness="1" BorderBrush="Black" Margin="20" HorizontalAlignment="Left" VerticalAlignment="Top" CornerRadius="2" DataContext="{Binding Path=DataContext, ElementName=editor}" Visibility="{Binding IsSettingsPanelVisible, Converter={StaticResource converter}}">
            <Behaviors:Interaction.Behaviors>
                <Behaviors:MouseDragElementBehavior ConstrainToParentBounds="True" />
            </Behaviors:Interaction.Behaviors>
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                </Grid.RowDefinitions>
                <Border Background="CornflowerBlue" Padding="5,1,0,2">
                    <TextBlock Text="Settings" Foreground="White" FontWeight="SemiBold" />
                </Border>
                <local:SettingsMenu Grid.Row="1" Margin="2" />
            </Grid>
        </Border>

    </Grid>
</Window>