ShanXi_SmartControl/IntelligentControlForsx/MyControls/HistoryLine.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Windows.Forms.DataVisualization.Charting;

namespace IntelligentControlForsx.MyControls
{
    public partial class HistoryLine : UserControl
    {
        public HistoryLine()
        {
            InitializeComponent();


            this.chart1.Series[0].Points.AddXY(1, 3.5);
            this.chart1.Series[0].Points.AddXY(2, 4.2);
            this.chart1.Series[0].Points.AddXY(3, 6);
            this.chart1.Series[0].Points.AddXY(4, 5.5);
            this.chart1.Series[0].Points.AddXY(5, 5.2);
            this.chart1.Series[0].Points.AddXY(6, 5.8);
            this.chart1.Series[0].Points.AddXY(7, 5);



            this.chart1.Series[1].Points.AddXY(1, 30);
            this.chart1.Series[1].Points.AddXY(2, 80);
            this.chart1.Series[1].Points.AddXY(3, 60);
            this.chart1.Series[1].Points.AddXY(4, 700);
            this.chart1.Series[1].Points.AddXY(5, 60);
            this.chart1.Series[1].Points.AddXY(6, 850);
            this.chart1.Series[1].Points.AddXY(7, 444);
        }

        //Dictionary<DateTime, double> SpeedDic;
        
        public void BuildChart(DateTime[] dts,Double[] speeds,Double[] powers)
        {
            chart1.Series[0].Points.Clear();
            chart1.Series[1].Points.Clear();
            if (dts.Length == speeds.Length && dts.Length == powers.Length)
            {
                for (int i = 0; i < dts.Length; i++)
                {
                    double thePower=0.0;
                    bool powerIsNum = Double.TryParse(powers[i].ToString(), out thePower);

                    double theSpeed = 0.0;
                    bool speedIsNum = Double.TryParse(speeds[i].ToString(), out theSpeed);
                    if (powerIsNum && speedIsNum)
                    {
                        try
                        {
                            int p = Convert.ToInt32(speeds[i]);
                            int s = Convert.ToInt32(powers[i]);
                        }
                        catch (Exception)
                        {
                            continue;
                        }
                        this.chart1.Series[0].Points.AddXY(dts[i], speeds[i]);
                        this.chart1.Series[1].Points.AddXY(dts[i], powers[i]);
                    }
                 
                }
              
            } 
            chart1.Invalidate();

        }

        private void chart1_GetToolTipText(object sender, System.Windows.Forms.DataVisualization.Charting.ToolTipEventArgs e)
        {
            if (e.HitTestResult.ChartElementType == ChartElementType.DataPoint)
            {
                int i = e.HitTestResult.PointIndex;
                //DataPoint dp = e.HitTestResult.Series.Points[i];
                DataPoint dp1 = this.chart1.Series[0].Points[i];
                DataPoint dp2 = this.chart1.Series[1].Points[i];

                //分别显示x轴和y轴的数值，其中{1:F3},表示显示的是float类型，精确到小数点后3位。  
                e.Text = string.Format("时间：{0}；\n风速：{1:F2}；\n功率：{2:F2}；", dp1.XValue, dp1.YValues[0], dp2.YValues[0]);
            }  
        }



    }
}