C#如何实现chart控件动态曲线绘制

这篇文章将为大家详细讲解有关C#如何实现chart控件动态曲线绘制，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。

具体内容如下

思想

实验室要做一个动态曲线绘制，网上方法很多，但是缺乏完整代码和效果图的整合，往往总是缺少其一，因此整理如下，方便大家编程，节约时间。
思路：新建一个队列，利用timer控件，动态的往队列中加入数据，每次触发事件，就相当于将队列中的值全部重新画一遍。

我的目的是做四个点的动态监测，所以代码重复了四次，其实应该用4个线程来做，思路就显得较为清晰了，这也是可以改进的地方。

public partial class 界面_Xtratabcontrol版本_ : Form
    {
        private Queue<double> dataQueue1 = new Queue<double>(100); //30个就清空一次
        private Queue<double> dataQueue2 = new Queue<double>(100); //30个就清空一次
        private Queue<double> dataQueue3 = new Queue<double>(100); //30个就清空一次
        private Queue<double> dataQueue4 = new Queue<double>(100); //30个就清空一次
        private int stress1 = 0;//设置一个压力值全局变量
        private int stress2 = 0;//设置一个压力值全局变量
        private int stress3 = 0;//设置一个压力值全局变量
        private int stress4 = 0;//设置一个压力值全局变量
        string monthNow = "";
        string monthNext = "";
        string currentTime = "";
        bool isRefresh = false;
        public 界面_Xtratabcontrol版本_()
        {
            InitializeComponent();
            dataGridView1.AutoGenerateColumns = false; //设置不自动显示数据库中未绑定的列
            //设置隔行背景色
            this.dataGridView1.RowsDefaultCellStyle.BackColor = Color.Bisque;
            this.dataGridView1.AlternatingRowsDefaultCellStyle.BackColor = Color.Beige;
        }

        private void btnInit_Click(object sender, EventArgs e)
        {
            InitChart1();
            InitChart2();
            InitChart3();
            InitChart4();
        }

        private void btnStart_Click(object sender, EventArgs e)
        {
            this.timer1.Start();
        }

        private void btnStop_Click(object sender, EventArgs e)
        {
            this.timer1.Stop();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            try
            {
                UpdateDate(); //根据当前时间取下一个数据，同时给month赋值
                dataQueue1.Enqueue(stress1); //就是这，不断往里面加数据。
                dataQueue2.Enqueue(stress2);
                dataQueue3.Enqueue(stress3);
                dataQueue4.Enqueue(stress4);
                if (isRefresh)
                {
                    //刷新界面
                    isRefresh = false;
                    InitChart1();
                    InitChart2();
                    InitChart3();
                    InitChart4();
                    dataQueue1.Enqueue(stress1);
                    dataQueue2.Enqueue(stress2);
                    dataQueue3.Enqueue(stress3);
                    dataQueue4.Enqueue(stress4);
                }
                this.chart1.Series[0].Points.Clear();
                this.chart2.Series[0].Points.Clear();
                this.chart3.Series[0].Points.Clear();
                this.chart4.Series[0].Points.Clear();
                for (int i = 0; i < dataQueue1.Count; i++)
                {
                    this.chart1.Series[0].Points.AddXY((i + 1), dataQueue1.ElementAt(i)); 相当于每次都是重新画一遍
                }
                for (int i = 0; i < dataQueue2.Count; i++)
                {
                    this.chart2.Series[0].Points.AddXY((i + 1), dataQueue2.ElementAt(i)); 相当于每次都是重新画一遍
                }
                for (int i = 0; i < dataQueue3.Count; i++)
                {
                    this.chart3.Series[0].Points.AddXY((i + 1), dataQueue3.ElementAt(i)); 相当于每次都是重新画一遍
                }
                for (int i = 0; i < dataQueue4.Count; i++)
                {
                    this.chart4.Series[0].Points.AddXY((i + 1), dataQueue4.ElementAt(i)); 相当于每次都是重新画一遍
                }

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
        private void InitChart1()
        {
            try
            {
                //定义图表区域
                this.chart1.ChartAreas.Clear();
                ChartArea chartArea1 = new ChartArea("C1");
                this.chart1.ChartAreas.Add(chartArea1);
                //this.chart1.Dock = DockStyle.Fill;
                //定义存储和显示点的容器
                this.chart1.Series.Clear();
                Series series1 = new Series("S1");
                series1.ChartArea = "C1";
                this.chart1.Series.Add(series1);
                //设置图表显示样式
                this.chart1.ChartAreas[0].AxisY.Minimum = 30000;
                this.chart1.ChartAreas[0].AxisY.Maximum = 50000;
                this.chart1.ChartAreas[0].AxisX.Minimum = 1;
                this.chart1.ChartAreas[0].AxisX.Maximum = 31;
                this.chart1.ChartAreas[0].AxisX.Interval = 1;
                this.chart1.ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Silver;
                this.chart1.ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Silver;
                //设置标题
                this.chart1.Titles.Clear();
                this.chart1.Titles.Add("S01");
                this.chart1.Titles[0].Text = "1号监测点";
                this.chart1.Titles[0].ForeColor = Color.RoyalBlue;
                this.chart1.Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F);
                //设置图表显示样式
                this.chart1.Series[0].Color = Color.Red;
                if (rb1.Checked)
                {
                    //this.chart1.Titles[0].Text = string.Format("动态 {0} 显示", rb1.Text);
                    this.chart1.Titles[0].Text = string.Format("1号监测点");
                    this.chart1.Series[0].ChartType = SeriesChartType.Line;
                }
                if (rb2.Checked)
                {
                    this.chart1.Titles[0].Text = string.Format("动态 {0} 显示", rb1.Text);
                    this.chart1.Series[0].ChartType = SeriesChartType.Spline;
                }
                this.chart1.Series[0].Points.Clear();
                //DBEngine.ConnectDB("orcl", "dt", "6312");
                dataQueue1.Clear();//清空队列中所有数据
            }
            catch (Exception ex)
            {

            }
        }

        private void InitChart2()
        {
            try
            {
                //定义图表区域
                this.chart2.ChartAreas.Clear();
                ChartArea chartArea2 = new ChartArea("C2");
                this.chart2.ChartAreas.Add(chartArea2);
                //this.chart1.Dock = DockStyle.Fill;
                //定义存储和显示点的容器
                this.chart2.Series.Clear();
                Series series2 = new Series("S2");
                series2.ChartArea = "C2";
                this.chart2.Series.Add(series2);
                //设置图表显示样式
                this.chart2.ChartAreas[0].AxisY.Minimum = 30000;
                this.chart2.ChartAreas[0].AxisY.Maximum = 50000;
                this.chart2.ChartAreas[0].AxisX.Minimum = 1;
                this.chart2.ChartAreas[0].AxisX.Maximum = 31;
                this.chart2.ChartAreas[0].AxisX.Interval = 1;
                this.chart2.ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Silver;
                this.chart2.ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Silver;
                //设置标题
                this.chart2.Titles.Clear();
                this.chart2.Titles.Add("S02");
                this.chart2.Titles[0].Text = "动态折线图显示";
                this.chart2.Titles[0].ForeColor = Color.RoyalBlue;
                this.chart2.Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F); //标题字体
                //设置图表显示样式
                this.chart2.Series[0].Color = Color.Red;
                if (rb1.Checked)
                {
                    //this.chart2.Titles[0].Text = string.Format("动态 {0} 显示", rb1.Text);
                    this.chart2.Titles[0].Text = string.Format("2号监测点");
                    this.chart2.Series[0].ChartType = SeriesChartType.Line;
                }
                if (rb2.Checked)
                {
                    this.chart2.Titles[0].Text = string.Format("动态 {0} 显示", rb1.Text);
                    this.chart2.Series[0].ChartType = SeriesChartType.Spline;
                }
                this.chart2.Series[0].Points.Clear();
                //DBEngine.ConnectDB("orcl", "dt", "6312");
                dataQueue2.Clear();//清空队列中所有数据
            }
            catch (Exception ex)
            {

            }
        }
        private void InitChart3()
        {
            try
            {
                //定义图表区域
                this.chart3.ChartAreas.Clear();
                ChartArea chartArea3 = new ChartArea("C3");
                this.chart3.ChartAreas.Add(chartArea3);
                //this.chart1.Dock = DockStyle.Fill;
                //定义存储和显示点的容器
                this.chart3.Series.Clear();
                Series series3 = new Series("S3");
                series3.ChartArea = "C3";
                this.chart3.Series.Add(series3);
                //设置图表显示样式
                this.chart3.ChartAreas[0].AxisY.Minimum = 30000;
                this.chart3.ChartAreas[0].AxisY.Maximum = 50000;
                this.chart3.ChartAreas[0].AxisX.Minimum = 1;
                this.chart3.ChartAreas[0].AxisX.Maximum = 31;
                this.chart3.ChartAreas[0].AxisX.Interval = 1;
                this.chart3.ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Silver;
                this.chart3.ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Silver;
                //设置标题
                this.chart3.Titles.Clear();
                this.chart3.Titles.Add("S03");
                this.chart3.Titles[0].Text = "动态折线图显示";
                this.chart3.Titles[0].ForeColor = Color.RoyalBlue;
                this.chart3.Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F); //标题字体
                //设置图表显示样式
                this.chart3.Series[0].Color = Color.Red;
                if (rb1.Checked)
                {
                    //this.chart3.Titles[0].Text = string.Format("动态 {0} 显示", rb1.Text);
                    this.chart3.Titles[0].Text = string.Format("3号监测点");
                    this.chart3.Series[0].ChartType = SeriesChartType.Line;
                }
                if (rb2.Checked)
                {
                    this.chart3.Titles[0].Text = string.Format("动态 {0} 显示", rb1.Text);
                    this.chart3.Series[0].ChartType = SeriesChartType.Spline;
                }
                this.chart3.Series[0].Points.Clear();
                //DBEngine.ConnectDB("orcl", "dt", "6312");
                dataQueue3.Clear();//清空队列中所有数据
            }
            catch (Exception ex)
            {

            }
        }
        private void InitChart4()
        {
            try
            {
                //定义图表区域
                this.chart4.ChartAreas.Clear();
                ChartArea chartArea4 = new ChartArea("C4");
                this.chart4.ChartAreas.Add(chartArea4);
                //this.chart1.Dock = DockStyle.Fill;
                //定义存储和显示点的容器
                this.chart4.Series.Clear();
                Series series4 = new Series("S4");
                series4.ChartArea = "C4";
                this.chart4.Series.Add(series4);
                //设置图表显示样式
                this.chart4.ChartAreas[0].AxisY.Minimum = 30000;
                this.chart4.ChartAreas[0].AxisY.Maximum = 50000;
                this.chart4.ChartAreas[0].AxisX.Minimum = 1;
                this.chart4.ChartAreas[0].AxisX.Maximum = 31;
                this.chart4.ChartAreas[0].AxisX.Interval = 1;
                this.chart4.ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Silver;
                this.chart4.ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Silver;
                //设置标题
                this.chart4.Titles.Clear();
                this.chart4.Titles.Add("S04");
                this.chart4.Titles[0].Text = "动态折线图显示";
                this.chart4.Titles[0].ForeColor = Color.RoyalBlue;
                this.chart4.Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F); //标题字体
                //设置图表显示样式
                this.chart4.Series[0].Color = Color.Red;
                if (rb1.Checked)
                {
                    //this.chart4.Titles[0].Text = string.Format("动态 {0} 显示", rb1.Text);
                    this.chart4.Titles[0].Text = string.Format("4号监测点");
                    this.chart4.Series[0].ChartType = SeriesChartType.Line;
                }
                if (rb2.Checked)
                {
                    this.chart4.Titles[0].Text = string.Format("动态 {0} 显示", rb1.Text);
                    this.chart4.Series[0].ChartType = SeriesChartType.Spline;
                }
                this.chart4.Series[0].Points.Clear();
                //DBEngine.ConnectDB("orcl", "dt", "6312");
                dataQueue4.Clear();//清空队列中所有数据
            }
            catch (Exception ex)
            {

            }
        }


        private void UpdateDate()
        {
            //1 2 3 4号点同时更新
            try
            {
                //获取当前时间的batch值，将batch+1的时间值提取显示。
                string selectsql = string.Format("select * from stressinfo where operatetime=to_date('{0}','yyyy-mm-dd')", dtp1.Value.ToShortDateString());
                DataTable dtDate = new DataTable();
                dtDate = DBEngine.GetDataTableBySql(selectsql);
                if (dtDate.Rows.Count > 0) //4条
                {
                    string[] getmonthNow = dtp1.Value.ToShortDateString().Split('/'); //有的电脑是'-'
                    monthNow = getmonthNow[1];
                    int currentBatch = DBEngine.ObjToInt(dtDate.Rows[0]["batchnum"]);
                    //int currentNode = DBEngine.ObjToInt(dtDate.Rows[0]["NODE"]); //当前节点和当前批次确定唯一记录
                    currentBatch++;
                    //获取下一个显示的时间值以及应力值
                    string nextsql1 = string.Format("select * from stressinfo where batchnum='{0}' and node=1", currentBatch);
                    DataTable dtNext1 = new DataTable();

                    dtNext1 = DBEngine.GetDataTableBySql(nextsql1);//取得了下一个批次的所有应力监测点数据。
                    if (dtNext1.Rows.Count > 0)
                    {
                        stress1 = DBEngine.ObjToInt(dtNext1.Rows[0]["CURRENTSTRESS"]);
                        dtp1.Value = DBEngine.ObjToDateTime(dtNext1.Rows[0]["OPERATETIME"]); //日期显示（之后应该还有各点应力的提取）
                        currentTime = dtp1.Value.ToShortDateString();
                        string[] datetime = currentTime.Split('/');
                        monthNext = datetime[1];
                        if (monthNow != monthNext)
                            isRefresh = true;
                    }
                    else
                    {
                        timer1.Stop();//数据到头了，没有数据了，batch+1找不到了
                        btnStop.Focus(); //停止键焦点显示
                    }
                    ///第二个点，不用更新数据
                    string nextsql2 = string.Format("select * from stressinfo where batchnum='{0}' and node=2", currentBatch);
                    DataTable dtNext2 = new DataTable();
                    dtNext2 = DBEngine.GetDataTableBySql(nextsql2);//取得了下一个批次的所有应力监测点数据。
                    if (dtNext2.Rows.Count > 0)
                    {
                        stress2 = DBEngine.ObjToInt(dtNext2.Rows[0]["CURRENTSTRESS"]);
                    }
                    else
                    {
                        timer1.Stop();//数据到头了，没有数据了，batch+1找不到了
                        btnStop.Focus(); //停止键焦点显示
                    }
                    ///第三个点，不用更新数据
                    string nextsql3 = string.Format("select * from stressinfo where batchnum='{0}' and node=3", currentBatch);
                    DataTable dtNext3 = new DataTable();
                    dtNext3 = DBEngine.GetDataTableBySql(nextsql3);//取得了下一个批次的所有应力监测点数据。
                    if (dtNext3.Rows.Count > 0)
                    {
                        stress3 = DBEngine.ObjToInt(dtNext3.Rows[0]["CURRENTSTRESS"]);
                    }
                    else
                    {
                        timer1.Stop();//数据到头了，没有数据了，batch+1找不到了
                        btnStop.Focus(); //停止键焦点显示
                    }
                    ///第四个点，不用更新数据
                    string nextsql4 = string.Format("select * from stressinfo where batchnum='{0}' and node=4", currentBatch);
                    DataTable dtNext4 = new DataTable();
                    dtNext4 = DBEngine.GetDataTableBySql(nextsql4);//取得了下一个批次的所有应力监测点数据。
                    if (dtNext4.Rows.Count > 0)
                    {
                        stress4 = DBEngine.ObjToInt(dtNext4.Rows[0]["CURRENTSTRESS"]);
                    }
                    else
                    {
                        timer1.Stop();//数据到头了，没有数据了，batch+1找不到了
                        btnStop.Focus(); //停止键焦点显示
                    }

                }
            }
            catch
            {
            }

        }
}

因为涉及到一些业务，有些代码没有粘，数据是和Oracle数据库进行交互的，类文件名DBEngine.cs，大家自己做的时候别忘连接数据库，最终效果图

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