GUI Windows Form C#

using System;  
  using System.Windows.Forms;
  public class MyForm : System.Windows.Forms.Form
  {
    private Button btnLoad;  
    private PictureBox imgPhoto;
        public MyForm()
        {
        this.Text = "www.rntsoft.com";
    
        btnLoad = new Button();
        btnLoad.Text = "&Load";
        btnLoad.Left = 10;
        btnLoad.Top = 10;
    
        imgPhoto = new PictureBox();
        imgPhoto.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
        imgPhoto.Width = this.Width / 2;      
        imgPhoto.Height = this.Height / 2;      
        imgPhoto.Left = (this.Width - imgPhoto.Width) / 2;
        imgPhoto.Top = (this.Height - imgPhoto.Height) / 2;
    
        this.Controls.Add(btnLoad);
        this.Controls.Add(imgPhoto);  
        }
      public static void Main()
        {
            Application.Run(new MyForm());
        }
    }