70 lines
1.6 KiB
C#
70 lines
1.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.IO;
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using System.Linq;
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using System.Web;
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using System.Web.Mvc;
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using System.Web.UI.DataVisualization.Charting;
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using System.Web.UI.WebControls;
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namespace LeafWeb.Web.Controllers
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{
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public class LeafCharterController : Controller
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{
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public ActionResult Index()
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{
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return View();
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}
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public ActionResult ChartSample()
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{
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var chart = new Chart
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{
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BackColor = Color.FromArgb(255, 255, 255),
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Width = Unit.Pixel(250),
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Height = Unit.Pixel(2500)
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};
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var series = new Series
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{
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ChartArea = "ca1",
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ChartType = SeriesChartType.Line
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};
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//series.Font = new Font("Verdana", 8.25f, FontStyle.Regular);
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var myRandom = new Random();
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for (int i = 0; i < 100; i++)
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{
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var dp = new DataPoint();
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dp.AxisLabel = String.Format("{0}-{1}", i, Guid.NewGuid().ToString().Substring(0, 4));
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dp.YValues = new double[] { myRandom.Next(5, 100) };
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series.Points.Add(dp);
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}
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chart.Series.Add(series);
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var area = new ChartArea("ca1");
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area.Area3DStyle.Enable3D = false;
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area.AxisX.Interval = 1;
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//area.BackColor = Color.Transparent;
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//var labelStyle = new LabelStyle();
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//labelStyle.Enabled = true;
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//labelStyle.Font = new Font("Arial", 3f);
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area.AxisX.LabelStyle.Font = new Font("Verdana", 8.25f, FontStyle.Underline);//Why does it recognize the style but not the font!!!???
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chart.ChartAreas.Add(area);
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using (var ms = new MemoryStream())
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{
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chart.SaveImage(ms, ChartImageFormat.Png);
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ms.Seek(0, SeekOrigin.Begin);
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return File(ms.ToArray(), "image/png", "mychart.png");
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}
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}
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}
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} |