是否可以在winform c#中使用for循环添加新的矩形变量？

using System;
using System.Drawing;
using System.Windows.Forms;

namespace WinFormApp
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            Pen pen = new Pen(Color.Black);

            for (int i = 0; i < 5; i++)
            {
                Rectangle rect = new Rectangle(50 + i * 50, 50, 40, 40);
                g.DrawRectangle(pen, rect);
            }
        }
    }
}