C# 实时曲线图 c# 实时曲线图代码实例

using DevExpress.XtraCharts;
using System;
using System.Windows.Forms;

namespace ChartControl
{
 public partial class Form1 : Form
 {
 private const int _pointsCount = 15; //固定保留15个点
 private int _hour = 0;
 private int _minute = 0;
 private SeriesPointCollection _points;

 public Form1()
 {
  InitializeComponent();
  _points = chartControl1.Series[0].Points;
 }

 private void timer1_Tick(object sender, EventArgs e)
 {
  if (_minute >= 60)
  {
  _hour += 1;
  _minute = 0;
  }
  if (_hour == 24)
  {
  _hour = 0;
  }
  if (_points.Count >= _pointsCount)
  {
  _points.RemoveAt(0);
  }
  var argument = $"{_hour.ToString().PadLeft(2, '0')}:{_minute.ToString().PadLeft(2, '0')}"; // X轴数据
  var value = Math.Round(new Random().NextDouble() * 20, 2); // Y轴数据
  var seriesPoint = new SeriesPoint(argument, value);
  _points.Add(seriesPoint);
  _minute += 1;
 }
 }
}