Hello guys,
My problem is that when I want to draw 2 points on the form and connect them, the points do not appear but the connections are still on the form. I am using DrawEllipse and DrawLine methods.

Code:
 public partial class Form1 : Form
    {
        private Point p1, p2;
        List<Point> p1List = new List<Point>();
        List<Point> p2List = new List<Point>();
...