WPF Form without using XAML

1)Open a WPF Application called as WpfApplication1.
2)Add a class from Add New Item and put the following code.

3)Please delete the default Window1.xaml file.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Markup;
namespace WpfApplication1
{
   
    public partial class Window1 : Window
    {
        private Button button1;
        public Window1()
        {
            InitializeComponent();
        }
        private void InitializeComponent()
        {
            // Configure the form.
            this.Width = this.Height = 285;
            this.Left = this.Top = 100;
            this.Title = "Code-Only Window";
            // Create a container to hold a button.
            DockPanel panel = new DockPanel();
            // Create the button.
            button1 = new Button();
            button1.Content = "Please click me.";
            button1.Margin = new Thickness(30);
            // Attach the event handler.
            button1.Click += button1_Click;
            IAddChild container = panel;
            container.AddChild(button1);
            // Place the panel in the form.
            container = this;
            container.AddChild(panel);
        }
        private void button1_Click(object sender, RoutedEventArgs e)
        {
            button1.Content = "Thank you.";
        }
    }

}

//To execute this code, add another class to the Application and add this
//Code:-
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;

namespace WpfApplication1
{
    public partial class Program : Application
    {
        [STAThread()]
        static void Main()
        {
            Program app = new Program();
            app.MainWindow = new Window1();
            app.MainWindow.ShowDialog();
        }
    }

}

Now go to WPFApplication1->Properties->Open->StartUpObject->WpfApplication1.Program.

When you click the Button, its text should change to Thank you