default.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

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(300, 150);
        Graphics g = Graphics.FromImage(bitmap);
        GraphicsPath gPath = new GraphicsPath();
        g.Clear(Color.WhiteSmoke);
        Pen myPen = new Pen(Color.Blue, 1);
        Point[] myPoints = { new Point(15, 130), new Point(30, 40), new Point(50, 130) };
        gPath.AddArc(50, 100, 80, 50, 210, 180);
        gPath.StartFigure();
        gPath.AddCurve(myPoints);
        gPath.AddPie(150, 80, 80, 100, 210, 120);
        g.DrawPath(myPen, gPath);
        System.IO.MemoryStream ms = new System.IO.MemoryStream();
        bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
        Response.ClearContent();
        Response.ContentType = "image/Gif";
        Response.BinaryWrite(ms.ToArray());
    }
}