CPF/ClassLibrary1/MainView.cs

using CPF;
using CPF.Controls;
using System;

namespace ClassLibrary1
{
    public class MainView : Control
    {
        protected override void InitializeComponent()
        {
            //Root.LoadStyleFile("res://ClassLibrary1/Stylesheet1.css");
            Background = "#FFFFFF";
            Width = 387;
            Height = 464;
            Children.Add(new Button
            {
                MarginTop = 42,
                Commands =
                {
                    {
                        nameof(Button.Click),
                        nameof(ClickTest),
                        this,
                        CommandParameter.EventSender,
                        CommandParameter.EventArgs
                    },
                },
                Height = 31,
                Width = 72,
                Content = "Button",
            });
            Children.Add(new ListBox
            {
                Height = 189,
                Width = 148,
                Items =
                {
                    1,
                    2,
                    3,
                    4,
                    5,
                    6,
                    7,
                    8,
                    9,
                    10,
                    11,
                    12,
                    13,
                    14,
                    15,
                    16,
                    17,
                    18,
                    19,
                    20
                }
            });
        }
        void ClickTest(CpfObject obj, RoutedEventArgs eventArgs)
        {
            new Window1().Show();
        }
    }
}