一、char曲线显示随机数数据

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            CheckForIllegalCrossThreadCalls=false;
            this.chart1.MouseWheel += Chart1_MouseWheel;//系统不提供，鼠标滚动事件需要自己添加
        }

        Random random = new Random();
        Thread thread = null;

        private void Chart1_MouseWheel(object sender, MouseEventArgs e)
        {
            if (e.Delta==120) // 鼠标向上滚动e.Delta==120
            {
                if (chart1.ChartAreas[0].AxisX.ScaleView.Size > 0)
                {
                    chart1.ChartAreas[0].AxisX.ScaleView.Size /= 2;
                }
                else if (e.Delta > 0) // 鼠标向下滚动e.Delta==-120
                {
                    chart1.ChartAreas[0].AxisX.ScaleView.Size = chart1.Series[0].Points.Count / 2;
                }
            }
            else if (e.Delta == -120)
            {
                if (chart1.ChartAreas[0].AxisX.ScaleView.Size > 0)
                {
                    chart1.ChartAreas[0].AxisX.ScaleView.Size *= 2;
                }
                else if (e.Delta > 0) // 鼠标向下滚动e.Delta==-120
                {
                    chart1.ChartAreas[0].AxisX.ScaleView.Size = chart1.Series[0].Points.Count * 2;
                }
            }
           
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            thread = new Thread(RandomNumber);
            
            thread.Start(); //启动线程
           

        }
        private void RandomNumber()
        {
            while (true)
            {
                this.chart1.Series[0].Points.AddY(random.Next(100)); //将随机数显示值曲线控件上
                Thread.Sleep(100);
            }
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            thread.Abort();  //结束线程
        }

        private void button1_Click(object sender, EventArgs e)
        {
            thread.Suspend(); //暂停线程
        }

        private void button2_Click(object sender, EventArgs e)
        {
            thread.Resume();//继续线程
        }
    }
}

运行结果：