How to make an ellipse control

Question

I tried creating an Ellipse class that inherits WinForms Control class and override OnPaint to draw ellipse.
When i start the program if BackColor is a visible color, it draws a rectangle of the color of BackColor. I know it is from OnPaintBackground but if i override it, It does very strange things. Ideas?
the class :

class Ellipse : Control {
public Ellipse {}
protected override void OnPaint (PaintEventArgs pe)=> pe.Graphics.FillEllipse (new SolidBrush (BackColor), pe.ClipRectangle);
}

Answer 1

If you may send the code and/or its results, that would be pleasant