using System;

 using System.Collections.Generic;

 using System.Linq;

 using System.Web;

 using System.Web.UI;

 using System.Web.UI.WebControls;

 using System.Drawing;

 using System.Drawing.Drawing2D;

 public partial class _Default : System.Web.UI.Page

 {

     protected void Page_Load(object sender, EventArgs e)

     {

         Bitmap bitmap = new Bitmap(, );

         Graphics g = Graphics.FromImage(bitmap);

         g.Clear(Color.White);

         Pen pen = new Pen(Color.Green, );

         Point[] pts = new Point[] { new Point(, ), new Point(, ), new Point(, ), new Point(, ), new Point(, ) };

         g.DrawPolygon(pen, pts);

         System.IO.MemoryStream ms = new System.IO.MemoryStream(); ;

         bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);

         Response.ClearContent();

         Response.ContentType = "image/Jpeg";

         Response.BinaryWrite(ms.ToArray());

     }

 }