Visual graphing: make a bézier curve and modify it

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C#

In an arrangement you want to add the 4 points of my Bézier curve;What I have tried:Then when dragging the points you want the curve to change and what I want to know is How to make that change?

What I have tried:

namespace Ejercicio_Unidad_2
{
    public partial class Form1 : Form
    {
        Point[] Puntos = new Point[4];
        public Form1()
        {
            InitializeComponent();
            Puntos[0].X = 96;
            Puntos[0].Y = 196;
            Puntos[1].X = 136;
            Puntos[1].Y = 76;
            Puntos[2].X = 146;
            Puntos[2].Y = 246;
            Puntos[3].X = 256;
            Puntos[3].Y = 196;
        }


    }
}