Fill the area 'bounded' by the path

   
 
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;

public class Form1 : Form {

    protected override void OnPaint(PaintEventArgs e) {
    Graphics g = e.Graphics;
    g.FillRectangle(Brushes.White, this.ClientRectangle);
    GraphicsPath gp = new GraphicsPath();
    gp.AddLine(10, 10, 10, 50);
    gp.AddLine(10, 50, 50, 50);
    gp.AddLine(50, 50, 50, 10);
    gp.StartFigure();
    gp.AddLine(60, 10, 60, 50);
    gp.AddLine(60, 50, 100, 50);
    gp.AddLine(100, 50, 100, 10);
    gp.CloseFigure();

    Rectangle r = new Rectangle(110, 10, 40, 40);
    gp.AddEllipse(r);
    g.FillPath(Brushes.Orange, gp);
    g.DrawPath(Pens.Black, gp);
    gp.Dispose();
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}