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asp.net GDI+ 绘制椭圆 ,弧线,扇形
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(360, 260); 15 Graphics g = Graphics.FromImage(bitmap); 16 g.Clear(Color.White); 17 Pen pen = new Pen(Color.Blue, 2); 18 Rectangle[] rects = { new Rectangle(10, 10, 100, 200), new Rectangle(100, 200, 250, 50), new Rectangle(100, 50, 150, 150) }; 19 g.DrawEllipse(pen, rects[0]);//绘制椭圆 20 pen.Color = Color.Red; 21 g.DrawArc(pen, rects[1], -60, 180);//绘制弧线 22 pen.Color = Color.Turquoise; 23 g.DrawPie(pen, rects[2], 60, -120);//绘制扇形 24 System.IO.MemoryStream ms = new System.IO.MemoryStream(); 25 bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); 26 Response.ClearContent(); 27 Response.ContentType = "image/Jpeg"; 28 Response.BinaryWrite(ms.ToArray()); 29 } 30 }
asp.net GDI+ 绘制椭圆 ,弧线,扇形
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