asp.net GDI+繪製五邊形

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 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.Page11 {12     protected void Page_Load(object sender, EventArgs e)13     {14         Bitmap bitmap = new Bitmap(240, 200);15         Graphics g = Graphics.FromImage(bitmap);16         g.Clear(Color.White);17         Pen pen = new Pen(Color.Green, 3);18         Point[] pts = new Point[] { new Point(10, 120), new Point(120, 100), new Point(180, 120), new Point(240, 200), new Point(60, 200) };19         g.DrawPolygon(pen, pts);20         System.IO.MemoryStream ms = new System.IO.MemoryStream(); ;21         bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);22         Response.ClearContent();23         Response.ContentType = "image/Jpeg";24         Response.BinaryWrite(ms.ToArray());25     }26 }

 

asp.net GDI+繪製五邊形