C# 实时折线图，波形图

  1 using System;
  2  System.Collections.Generic;
  3  System.ComponentModel;
  4  System.Data;
  5  System.Drawing;
  6  System.Linq;
  7  System.Text;
  8  System.Windows.Forms;
  9  System.Windows.Forms.DataVisualization.Charting;
 10 
 11 namespace WindowsFormsApplication1
 12 {
 13     public partial class RealChart : Form
 14     {
 15         private Queue<double> dataQueue = new Queue<double>(100);
 16 
 17         private int curValue = 0;
 18 
 19         int num = 5;//每次删除增加几个点
 20 
 21         public RealChart()
 22         {
 23             InitializeComponent();
 24         }
 25 
 26         /// <summary>
 27         /// 初始化事件
 28         </summary>
 29         <param name="sender"></param>
 30         <param name="e"></param>
 31         void btnInit_Click(object sender,EventArgs e)
 32  33             InitChart();
 34  35 
 36          37          开始事件
 38          39          40          41         void btnStart_Click( 42  43             this.timer1.Start();
 44         } 
 45         
 46          47          停止事件
 48          49          50          51         void btnStop_Click( 52  53             .timer1.Stop();
 54  55 
 56          57          定时器事件
 58          59          60          61         void timer1_Tick( 62  63             UpdateQueueValue();
 64             this.chart1.Series[].Points.Clear();
 65             for(int i=0;i<dataQueue.Count;i++){
 66                 0].Points.AddXY((i+1),dataQueue.ElementAt(i));
 67             }
 68  69         
 70          71          初始化图表
 72          73         void InitChart() {
 74             定义图表区域
 75             .chart1.ChartAreas.Clear();
 76             ChartArea chartArea1 = new ChartArea("C1" 77             .chart1.ChartAreas.Add(chartArea1);
 78             定义存储和显示点的容器
 79             .chart1.Series.Clear();
 80             Series series1 = new Series(S1 81             series1.ChartArea =  82             .chart1.Series.Add(series1);
 83             设置图表显示样式
 84             this.chart1.ChartAreas[0].AxisY.Minimum =  85             0].AxisY.Maximum = 86             0].AxisX.Interval = 5 87             0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Silver;
 88             0].AxisY.MajorGrid.LineColor = 89             设置标题
 90             .chart1.Titles.Clear();
 91             this.chart1.Titles.Add(S01 92             this.chart1.Titles[0].Text = XXX显示 93             0].ForeColor = Color.RoyalBlue;
 94             0].Font = new System.Drawing.Font(Microsoft Sans Serif,12F);
 95              96             0].Color = Color.Red;
 97             if (rb1.Checked)
 98             {
 99                 0].Text =string.Format( XXX {0} 显示100                 0].ChartType = SeriesChartType.Line;
101 102              (rb2.Checked) {
103                 0].Text = string.Format(104                  SeriesChartType.Spline;
105 106             107 108         
109         更新队列中的值
110          UpdateQueueValue() {
111             
112             if (dataQueue.Count > ) {
113                 先出列
114                 for (int i = 0; i < num; i++)
115                 {
116                     dataQueue.Dequeue();
117                 }
118 119             120 121                 Random r = new Random();
122                 123 124                     dataQueue.Enqueue(r.Next(0,));
125 126 127             128                 129 130                     对curValue只取[0,360]之间的值
131                     curValue = curValue % 360132                     对得到的正玄值，放大50倍，并上移50
133                     dataQueue.Enqueue((50*Math.Sin(curValue*Math.PI / 180))+50134                     curValue=curValue+10135 136 137 138     }
139 }