Learn-WinUI-3-Second-Edition/Chapter01/WinUI.SimpleSample/WinUI3.SimpleSample/MainWindow.xaml

<!-- Copyright (c) Microsoft Corporation and Contributors. -->
<!-- Licensed under the MIT License. -->

<Window
    x:Class="WinUI3.SimpleSample.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:WinUI3.SimpleSample"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Grid x:Name="ParentGrid"
          HorizontalAlignment="Stretch"
          VerticalAlignment="Top"
          Padding="2">
        <Grid.Resources>
            <Style TargetType="Button">
                <Setter Property="BorderThickness"
                        Value="2"/>
                <Setter Property="Foreground"
                        Value="LightGray"/>
                <Setter Property="BorderBrush"
                        Value="GhostWhite"/>
                <Setter Property="Background"
                        Value="DarkBlue"/>
            </Style>
        </Grid.Resources>
        
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TextBlock Grid.Row="0" Grid.Column="0"
                   Text="Name:"
                   Margin="0,0,2,0"
                   VerticalAlignment="Center"/>
        <TextBox Grid.Row="0" Grid.Column="1"
                 Text="{x:Bind Path=ViewModel.Name, Mode=TwoWay}"/>
        <TextBlock Grid.Row="1" Grid.Column="0"
                   Text="Actual Width:"
                   Margin="0,0,2,0"
                   VerticalAlignment="Center"/>
        <TextBlock Grid.Row="1" Grid.Column="1"
                   Text="{Binding ElementName=ParentGrid, Path=ActualWidth}"/>
        <StackPanel Grid.Row="2" Grid.Column="1"
                    Margin="0,4,0,0"
                    HorizontalAlignment="Right"
                    VerticalAlignment="Top"
                    Orientation="Horizontal">
            <PersonPicture Initials="MS" Margin="0,0,8,0"/>
            <DropDownButton Content="Submit" Margin="0,0,4,0">
                <DropDownButton.Flyout>
                    <MenuFlyout Placement="Bottom">
                        <MenuFlyoutItem Text="Submit + Print"/>
                        <MenuFlyoutItem Text="Submit + Email"/>
                    </MenuFlyout>
                </DropDownButton.Flyout>
            </DropDownButton>
            <Button Content="Cancel"/>
        </StackPanel>
    </Grid>
</Window>