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asp.net GDI+绘制折线
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(260, 120); 15 Graphics graphics = Graphics.FromImage(bitmap); 16 graphics.Clear(Color.White); 17 Pen pen = new Pen(Color.Black, 3); 18 Point[] points = { new Point(10, 10), new Point(100, 100), new Point(200, 50), new Point(260, 120) }; 19 graphics.DrawLines(pen, points); 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+绘制折线
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