asp.net的生成曲线图(2)

g.DrawRectangle(new Pen(Color.White, 400), 0, 0, img.Width, img.Height); //定义黑色过渡型笔刷 LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, img.Width, img.Height), Color.Black, Color.Black, 1.2F, true); //定义蓝色过渡型笔刷 LinearGradientBrush Bluebrush = new LinearGradientBrush(new Rectangle(0, 0, img.Width, img.Height), Color.Blue, Color.Blue, 1.2F, true); //绘制大标题 g.DrawString(ds.Tables[0].Rows[0]["sendid"].ToString() + "号订单发送情况曲线图", Bfont, brush, 40, 5); //取得当前发送量 int nums=0; for (int i = 0; i < count; i++) { nums+=Convert.ToInt32(ds.Tables[0].Rows[i]["sendnum"]); } //绘制信息简报 string info="订单发送时间："+ds.Tables[0].Rows[0]["sendtime"].ToString()+" 曲线图生成时间："+DateTime.Now.ToString()+" 订单总量："+Tnum.ToString()+" 当前发送总量："+nums.ToString(); g.DrawString(info, Tfont, Bluebrush, 40, 25); //绘制图片边框 g.DrawRectangle(Bp, 0, 0, img.Width - 1, img.Height - 1); //绘制竖坐标线 for (int i = 0; i < count; i++) { g.DrawLine(Sp, 40+20 * i, 60, 40+20 * i, 360); } //绘制时间轴坐标标签 for (int i = 0; i < count; i+=2) { string st = Convert.ToDateTime(ds.Tables[0].Rows[i]["sendtime"]).ToString("hh:mm"); g.DrawString(st, font, brush, 30 + 20 * i, 370); } //绘制横坐标线 for (int i = 0; i < 10; i++) { g.DrawLine(Sp, 40, 60+30*i, 40+20*(count-1), 60+30*i); int s = 2500 - 50 * i * 5; //绘制发送量轴坐标标签 g.DrawString(s.ToString(), font, brush, 10, 60 + 30 * i); } //绘制竖坐标轴 g.DrawLine(Bp, 40, 55, 40, 360); //绘制横坐标轴 g.DrawLine(Bp, 40, 360, 45 + 20 * (count - 1), 360); //定义曲线转折点 Point[] p = new Point[count]; for (int i = 0; i < count; i++) { p[i].X = 40 + 20 * i; p[i].Y = 360- Convert.ToInt32(ds.Tables[0].Rows[i]["sendnum"]) / 5*3/5; } //绘制发送曲线 g.DrawLines(Rp, p); for (int i = 0; i < count; i++) { //绘制发送记录点的发送量 g.DrawString(ds.Tables[0].Rows[i]["sendnum"].ToString(), font, Bluebrush, p[i].X, p[i].Y - 10); //绘制发送记录点 g.DrawRectangle(Rp, p[i].X - 1, p[i].Y - 1, 2, 2); } //绘制竖坐标标题 g.DrawString("发送量", Tfont, brush, 5, 40); //绘制横坐标标题 g.DrawString("发送时间", Tfont, brush, 40, 385); //保存绘制的图片 MemoryStream stream = new MemoryStream(); img.Save(stream, ImageFormat.Jpeg); //图片输出 page.Response.Clear(); page.Response.ContentType = "image/jpeg"; page.Response.BinaryWrite(stream.ToArray()); } }