1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Web;
5 using System.Web.UI;
6 using System.Web.UI.WebControls;
7 using System.Drawing;
8 using System.Drawing.Drawing2D;
9
10 public partial class _Default : System.Web.UI.Page
11 {
12 protected void Page_Load(object sender, EventArgs e)
13 {
14 Bitmap bitmap = new Bitmap(400, 200);
15 Graphics graphics = Graphics.FromImage(bitmap);
16 graphics.Clear(Color.White);
17 Point centerPoint = new Point(100, 100);
18 int r = 100;
19 GraphicsPath path = new GraphicsPath();
20 path.AddEllipse(centerPoint.X - r, centerPoint.Y - r, 2 * r, 2 * r);
21 PathGradientBrush mypathgradientBrush = new PathGradientBrush(path);
22 mypathgradientBrush.CenterPoint = centerPoint;
23 mypathgradientBrush.CenterColor = Color.DarkGreen;
24 mypathgradientBrush.SurroundColors = new Color[] { Color.Gold };
25 graphics.FillEllipse(mypathgradientBrush, centerPoint.X - r, centerPoint.Y - r, 2 * r, 2 * r);
26 centerPoint = new Point(300, 100);
27 r = 33;
28 path = new GraphicsPath();
29 path.AddEllipse(centerPoint.X - r, centerPoint.Y - r, 2 * r, 2 * r);
30 path.AddEllipse(centerPoint.X - 2*r, centerPoint.Y - 2*r, 4 * r, 4 * r);
31 path.AddEllipse(centerPoint.X - 3 * r, centerPoint.Y - 3 * r, 6 * r, 6 * r);
32 mypathgradientBrush = new PathGradientBrush(path);
33 mypathgradientBrush.CenterPoint = centerPoint;
34 mypathgradientBrush.CenterColor = Color.Gold;
35 mypathgradientBrush.SurroundColors = new Color[] { Color.Black, Color.Blue, Color.DarkGreen };
36 graphics.FillPath(mypathgradientBrush, path);
37 System.IO.MemoryStream ms = new System.IO.MemoryStream();
38 bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
39 Response.ClearContent();
40 Response.ContentType = "image/Jpeg";
41 Response.BinaryWrite(ms.ToArray());
42 }
43 }
