inabox/inabox.wpf/DynamicGrid/Controls/MonacoEditor.xaml

<Window x:Class="InABox.Wpf.DynamicGrid.Controls.MonacoEditor"
        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:local="clr-namespace:InABox.Wpf.DynamicGrid.Controls"
        xmlns:wpf="clr-namespace:Microsoft.Web.WebView2.Wpf;assembly=Microsoft.Web.WebView2.Wpf"
        mc:Ignorable="d"
        Title="MonacoEditor" Height="450" Width="800">
    <Grid x:Name="_grid">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <Button 
            Click="Button_Click"
            Content="Get Text"/>
        <wpf:WebView2 
            x:Name="webView21"
            Grid.Row="1"/> 
    </Grid>
</Window>