image.aspx

东软内部材料（四）asp等相关的教学案例

<%@ Page Language="c#" ContentType="image/jpeg" %>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.Drawing.Imaging" %>
<%@ Import Namespace="System.Drawing.Drawing2D" %>
<%
   Response.Clear();
   int height = 100;
   int width = 200;
   Random r = new Random();
   int x = r.Next(75);
   int x1 = 0;
   int a = r.Next(155);
   int x2 = r.Next(100);

   Bitmap bmp = new Bitmap(width, height, PixelFormat.Format24bppRgb);
   Graphics g = Graphics.FromImage(bmp);
   g.SmoothingMode = SmoothingMode.AntiAlias;
   g.Clear(Color.LightGray);
   g.DrawRectangle(Pens.White, 1, 1, width-3, height-3);
   g.DrawRectangle(Pens.Gray,  2, 2, width-3, height-3);
   g.DrawRectangle(Pens.Black, 0, 0, width, height);
   g.DrawString("Response.OutputStream Test", 
               new Font("Arial", 10, FontStyle.Bold), 
               SystemBrushes.WindowText, new PointF(10,50));
   g.FillRectangle(new SolidBrush(Color.FromArgb(a, 255, 128, 255)), 
                  x, 20, 100, 50);
   g.FillRectangle(new LinearGradientBrush(new Point(x2, 0), 
                                          new Point(x2+75, 50+30), 
                                          Color.FromArgb(128, 0, 0, 128), 
                                          Color.FromArgb(255, 255, 255, 240)), 
                  x2 ,50, 75, 30);

   bmp.Save(Response.OutputStream, ImageFormat.Jpeg);
   g.Dispose();
   bmp.Dispose();
   Response.End();
%>