Avalonia/samples/Sandbox/MainWindow.axaml.cs

using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.Presenters;
using Avalonia.Input.TextInput;
using Avalonia.Markup.Xaml;
using Avalonia.Win32.WinRT.Composition;

namespace Sandbox
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
    }
}