private void Form1_Paint(object sender, PaintEventArgs e)
{

Graphics g = e.Graphics;

// Create pen.
Pen blackPen = new Pen(Color.Black, 3);

// Create points that define polygon.

Point point1 = new Point(30, 50);
Point point2 = new Point(100, 25);
Point point3 = new Point(200, 5);
Point point4 = new Point(250, 50);
Point point5 = new Point(270, 100);
Point point6 = new Point(250, 250);
Point[] curvePoints = {point1, point2, point3, point4, point5, point6};

// Draw polygon to screen.
g.DrawPolygon(blackPen, curvePoints);

// Fill polygon
g.FillPolygon(Brushes.Red, curvePoints);

}