อยากออกแบบ Form ใน c# ให้มัน Full screen ตอน Design เลย ทำไงครับ

private void Form1_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
  {
   if ( e.KeyData == Keys.F11)
   {
      if (_bFullScreenMode == false)
      {
           Form2 f = new Form2();
           this.Owner = f;
           this.FormBorderStyle = FormBorderStyle.None;
           this.Left = (Screen.PrimaryScreen.Bounds.Width/2 - this.Width/2);
           this.Top = (Screen.PrimaryScreen.Bounds.Height/2 - this.Height/2);
           f.Show();
           _bFullScreenMode = true;
           f.KeyUp +=new KeyEventHandler(Form1_KeyUp);
      }
      else
      {
           Form f = this.Owner;
           this.Owner = null;
           f.Close();
     
           this.FormBorderStyle = FormBorderStyle.Sizable;
           _bFullScreenMode = false;
      }
   }
  }