using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D;
public class Form1 : System.Windows.Forms.Form {
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
Pen p = new Pen(Color.Brown, 15);
// round ends
p.StartCap = LineCap.Round;
p.EndCap = LineCap.Round;
g.DrawLine(p, 30, 80, Width - 50, 80);
}
}