GUI Windows Forms C# Tutorial

using System;
    using System.Drawing;
    using System.Collections;
    using System.ComponentModel;
    using System.Windows.Forms;
    using System.Data;
    
    public class MyFirstWindow : System.Windows.Forms.Form
    {
        public MyFirstWindow()
        {
            InitializeComponent();
        }
        
        private void InitializeComponent()
        {
            this.Size = new System.Drawing.Size(300,300);
            this.Text = "MyFirstWindow";
        }
        
        public static void Main(string[] args) 
        {
            Application.Run(new MyFirstWindow());
        }
    }