C#如何實現chart控件動態曲線繪制

這篇文章將為大家詳細講解有關C#如何實現chart控件動態曲線繪制，小編覺得挺實用的，因此分享給大家做個參考，希望大家閱讀完這篇文章后可以有所收獲。

具體內容如下

思想

實驗室要做一個動態曲線繪制，網上方法很多，但是缺乏完整代碼和效果圖的整合，往往總是缺少其一，因此整理如下，方便大家編程，節約時間。
思路：新建一個隊列，利用timer控件，動態的往隊列中加入數據，每次觸發事件，就相當于將隊列中的值全部重新畫一遍。

我的目的是做四個點的動態監測，所以代碼重復了四次，其實應該用4個線程來做，思路就顯得較為清晰了，這也是可以改進的地方。

public partial class 界面_Xtratabcontrol版本_ : Form
    {
        private Queue<double> dataQueue1 = new Queue<double>(100); //30個就清空一次
        private Queue<double> dataQueue2 = new Queue<double>(100); //30個就清空一次
        private Queue<double> dataQueue3 = new Queue<double>(100); //30個就清空一次
        private Queue<double> dataQueue4 = new Queue<double>(100); //30個就清空一次
        private int stress1 = 0;//設置一個壓力值全局變量
        private int stress2 = 0;//設置一個壓力值全局變量
        private int stress3 = 0;//設置一個壓力值全局變量
        private int stress4 = 0;//設置一個壓力值全局變量
        string monthNow = "";
        string monthNext = "";
        string currentTime = "";
        bool isRefresh = false;
        public 界面_Xtratabcontrol版本_()
        {
            InitializeComponent();
            dataGridView1.AutoGenerateColumns = false; //設置不自動顯示數據庫中未綁定的列
            //設置隔行背景色
            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(); //根據當前時間取下一個數據，同時給month賦值
                dataQueue1.Enqueue(stress1); //就是這，不斷往里面加數據。
                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)); 相當于每次都是重新畫一遍
                }
                for (int i = 0; i < dataQueue2.Count; i++)
                {
                    this.chart2.Series[0].Points.AddXY((i + 1), dataQueue2.ElementAt(i)); 相當于每次都是重新畫一遍
                }
                for (int i = 0; i < dataQueue3.Count; i++)
                {
                    this.chart3.Series[0].Points.AddXY((i + 1), dataQueue3.ElementAt(i)); 相當于每次都是重新畫一遍
                }
                for (int i = 0; i < dataQueue4.Count; i++)
                {
                    this.chart4.Series[0].Points.AddXY((i + 1), dataQueue4.ElementAt(i)); 相當于每次都是重新畫一遍
                }

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
        private void InitChart1()
        {
            try
            {
                //定義圖表區域
                this.chart1.ChartAreas.Clear();
                ChartArea chartArea1 = new ChartArea("C1");
                this.chart1.ChartAreas.Add(chartArea1);
                //this.chart1.Dock = DockStyle.Fill;
                //定義存儲和顯示點的容器
                this.chart1.Series.Clear();
                Series series1 = new Series("S1");
                series1.ChartArea = "C1";
                this.chart1.Series.Add(series1);
                //設置圖表顯示樣式
                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;
                //設置標題
                this.chart1.Titles.Clear();
                this.chart1.Titles.Add("S01");
                this.chart1.Titles[0].Text = "1號監測點";
                this.chart1.Titles[0].ForeColor = Color.RoyalBlue;
                this.chart1.Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F);
                //設置圖表顯示樣式
                this.chart1.Series[0].Color = Color.Red;
                if (rb1.Checked)
                {
                    //this.chart1.Titles[0].Text = string.Format("動態 {0} 顯示", rb1.Text);
                    this.chart1.Titles[0].Text = string.Format("1號監測點");
                    this.chart1.Series[0].ChartType = SeriesChartType.Line;
                }
                if (rb2.Checked)
                {
                    this.chart1.Titles[0].Text = string.Format("動態 {0} 顯示", rb1.Text);
                    this.chart1.Series[0].ChartType = SeriesChartType.Spline;
                }
                this.chart1.Series[0].Points.Clear();
                //DBEngine.ConnectDB("orcl", "dt", "6312");
                dataQueue1.Clear();//清空隊列中所有數據
            }
            catch (Exception ex)
            {

            }
        }

        private void InitChart2()
        {
            try
            {
                //定義圖表區域
                this.chart2.ChartAreas.Clear();
                ChartArea chartArea2 = new ChartArea("C2");
                this.chart2.ChartAreas.Add(chartArea2);
                //this.chart1.Dock = DockStyle.Fill;
                //定義存儲和顯示點的容器
                this.chart2.Series.Clear();
                Series series2 = new Series("S2");
                series2.ChartArea = "C2";
                this.chart2.Series.Add(series2);
                //設置圖表顯示樣式
                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;
                //設置標題
                this.chart2.Titles.Clear();
                this.chart2.Titles.Add("S02");
                this.chart2.Titles[0].Text = "動態折線圖顯示";
                this.chart2.Titles[0].ForeColor = Color.RoyalBlue;
                this.chart2.Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F); //標題字體
                //設置圖表顯示樣式
                this.chart2.Series[0].Color = Color.Red;
                if (rb1.Checked)
                {
                    //this.chart2.Titles[0].Text = string.Format("動態 {0} 顯示", rb1.Text);
                    this.chart2.Titles[0].Text = string.Format("2號監測點");
                    this.chart2.Series[0].ChartType = SeriesChartType.Line;
                }
                if (rb2.Checked)
                {
                    this.chart2.Titles[0].Text = string.Format("動態 {0} 顯示", rb1.Text);
                    this.chart2.Series[0].ChartType = SeriesChartType.Spline;
                }
                this.chart2.Series[0].Points.Clear();
                //DBEngine.ConnectDB("orcl", "dt", "6312");
                dataQueue2.Clear();//清空隊列中所有數據
            }
            catch (Exception ex)
            {

            }
        }
        private void InitChart3()
        {
            try
            {
                //定義圖表區域
                this.chart3.ChartAreas.Clear();
                ChartArea chartArea3 = new ChartArea("C3");
                this.chart3.ChartAreas.Add(chartArea3);
                //this.chart1.Dock = DockStyle.Fill;
                //定義存儲和顯示點的容器
                this.chart3.Series.Clear();
                Series series3 = new Series("S3");
                series3.ChartArea = "C3";
                this.chart3.Series.Add(series3);
                //設置圖表顯示樣式
                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;
                //設置標題
                this.chart3.Titles.Clear();
                this.chart3.Titles.Add("S03");
                this.chart3.Titles[0].Text = "動態折線圖顯示";
                this.chart3.Titles[0].ForeColor = Color.RoyalBlue;
                this.chart3.Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F); //標題字體
                //設置圖表顯示樣式
                this.chart3.Series[0].Color = Color.Red;
                if (rb1.Checked)
                {
                    //this.chart3.Titles[0].Text = string.Format("動態 {0} 顯示", rb1.Text);
                    this.chart3.Titles[0].Text = string.Format("3號監測點");
                    this.chart3.Series[0].ChartType = SeriesChartType.Line;
                }
                if (rb2.Checked)
                {
                    this.chart3.Titles[0].Text = string.Format("動態 {0} 顯示", rb1.Text);
                    this.chart3.Series[0].ChartType = SeriesChartType.Spline;
                }
                this.chart3.Series[0].Points.Clear();
                //DBEngine.ConnectDB("orcl", "dt", "6312");
                dataQueue3.Clear();//清空隊列中所有數據
            }
            catch (Exception ex)
            {

            }
        }
        private void InitChart4()
        {
            try
            {
                //定義圖表區域
                this.chart4.ChartAreas.Clear();
                ChartArea chartArea4 = new ChartArea("C4");
                this.chart4.ChartAreas.Add(chartArea4);
                //this.chart1.Dock = DockStyle.Fill;
                //定義存儲和顯示點的容器
                this.chart4.Series.Clear();
                Series series4 = new Series("S4");
                series4.ChartArea = "C4";
                this.chart4.Series.Add(series4);
                //設置圖表顯示樣式
                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;
                //設置標題
                this.chart4.Titles.Clear();
                this.chart4.Titles.Add("S04");
                this.chart4.Titles[0].Text = "動態折線圖顯示";
                this.chart4.Titles[0].ForeColor = Color.RoyalBlue;
                this.chart4.Titles[0].Font = new System.Drawing.Font("Microsoft Sans Serif", 12F); //標題字體
                //設置圖表顯示樣式
                this.chart4.Series[0].Color = Color.Red;
                if (rb1.Checked)
                {
                    //this.chart4.Titles[0].Text = string.Format("動態 {0} 顯示", rb1.Text);
                    this.chart4.Titles[0].Text = string.Format("4號監測點");
                    this.chart4.Series[0].ChartType = SeriesChartType.Line;
                }
                if (rb2.Checked)
                {
                    this.chart4.Titles[0].Text = string.Format("動態 {0} 顯示", rb1.Text);
                    this.chart4.Series[0].ChartType = SeriesChartType.Spline;
                }
                this.chart4.Series[0].Points.Clear();
                //DBEngine.ConnectDB("orcl", "dt", "6312");
                dataQueue4.Clear();//清空隊列中所有數據
            }
            catch (Exception ex)
            {

            }
        }


        private void UpdateDate()
        {
            //1 2 3 4號點同時更新
            try
            {
                //獲取當前時間的batch值，將batch+1的時間值提取顯示。
                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條
                {
                    string[] getmonthNow = dtp1.Value.ToShortDateString().Split('/'); //有的電腦是'-'
                    monthNow = getmonthNow[1];
                    int currentBatch = DBEngine.ObjToInt(dtDate.Rows[0]["batchnum"]);
                    //int currentNode = DBEngine.ObjToInt(dtDate.Rows[0]["NODE"]); //當前節點和當前批次確定唯一記錄
                    currentBatch++;
                    //獲取下一個顯示的時間值以及應力值
                    string nextsql1 = string.Format("select * from stressinfo where batchnum='{0}' and node=1", currentBatch);
                    DataTable dtNext1 = new DataTable();

                    dtNext1 = DBEngine.GetDataTableBySql(nextsql1);//取得了下一個批次的所有應力監測點數據。
                    if (dtNext1.Rows.Count > 0)
                    {
                        stress1 = DBEngine.ObjToInt(dtNext1.Rows[0]["CURRENTSTRESS"]);
                        dtp1.Value = DBEngine.ObjToDateTime(dtNext1.Rows[0]["OPERATETIME"]); //日期顯示（之后應該還有各點應力的提取）
                        currentTime = dtp1.Value.ToShortDateString();
                        string[] datetime = currentTime.Split('/');
                        monthNext = datetime[1];
                        if (monthNow != monthNext)
                            isRefresh = true;
                    }
                    else
                    {
                        timer1.Stop();//數據到頭了，沒有數據了，batch+1找不到了
                        btnStop.Focus(); //停止鍵焦點顯示
                    }
                    ///第二個點，不用更新數據
                    string nextsql2 = string.Format("select * from stressinfo where batchnum='{0}' and node=2", currentBatch);
                    DataTable dtNext2 = new DataTable();
                    dtNext2 = DBEngine.GetDataTableBySql(nextsql2);//取得了下一個批次的所有應力監測點數據。
                    if (dtNext2.Rows.Count > 0)
                    {
                        stress2 = DBEngine.ObjToInt(dtNext2.Rows[0]["CURRENTSTRESS"]);
                    }
                    else
                    {
                        timer1.Stop();//數據到頭了，沒有數據了，batch+1找不到了
                        btnStop.Focus(); //停止鍵焦點顯示
                    }
                    ///第三個點，不用更新數據
                    string nextsql3 = string.Format("select * from stressinfo where batchnum='{0}' and node=3", currentBatch);
                    DataTable dtNext3 = new DataTable();
                    dtNext3 = DBEngine.GetDataTableBySql(nextsql3);//取得了下一個批次的所有應力監測點數據。
                    if (dtNext3.Rows.Count > 0)
                    {
                        stress3 = DBEngine.ObjToInt(dtNext3.Rows[0]["CURRENTSTRESS"]);
                    }
                    else
                    {
                        timer1.Stop();//數據到頭了，沒有數據了，batch+1找不到了
                        btnStop.Focus(); //停止鍵焦點顯示
                    }
                    ///第四個點，不用更新數據
                    string nextsql4 = string.Format("select * from stressinfo where batchnum='{0}' and node=4", currentBatch);
                    DataTable dtNext4 = new DataTable();
                    dtNext4 = DBEngine.GetDataTableBySql(nextsql4);//取得了下一個批次的所有應力監測點數據。
                    if (dtNext4.Rows.Count > 0)
                    {
                        stress4 = DBEngine.ObjToInt(dtNext4.Rows[0]["CURRENTSTRESS"]);
                    }
                    else
                    {
                        timer1.Stop();//數據到頭了，沒有數據了，batch+1找不到了
                        btnStop.Focus(); //停止鍵焦點顯示
                    }

                }
            }
            catch
            {
            }

        }
}

因為涉及到一些業務，有些代碼沒有粘，數據是和Oracle數據庫進行交互的，類文件名DBEngine.cs，大家自己做的時候別忘連接數據庫，最終效果圖

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