C# Chart 简单使用教程

Chart控件可以用来绘制波形图、柱状图、饼图、折线图等，用来进行数据表现是很不错的，现在简单说一下这个控件的使用方法

XAML:

C# behind code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Forms;
using System.Windows.Forms.DataVisualization.Charting;
using System.Data;


// https://www.cnblogs.com/stackmiao/p/11463284.html // 参考

namespace WpfApp2
{
    /// 

    /// MainWindow.xaml 的交互逻辑
    /// 
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            Constructor();
            SetChartArea();
            SetSeries();
            SetTitle();
            SetLegend();
            SetStripLine();
        }

        private ChartArea m_ChartArea;
        private Series m_Series;
        private Series m_Series_2;
        private Legend m_Legend;
        private Title m_Title;

        private Random m_Random = new Random((int)DateTime.Now.Ticks);
        private Timer m_Timer = new Timer()
        {
            Interval = 500,
            Enabled = false
        };

        private void Constructor()
        {
            // Chart 控件可以包含多个 ChartArea
            // ChartArea 里可以含多条 Series

            m_ChartArea = new ChartArea();
            m_Series = new Series("曲线1");
            m_Series_2 = new Series("曲线2");
            m_Legend = new Legend("No.1");
            m_Title = new System.Windows.Forms.DataVisualization.Charting.Title(
                "保压值", System.Windows.Forms.DataVisualization.Charting.Docking.Top,
                new System.Drawing.Font("宋体", 16F), System.Drawing.Color.Black);
            chartTest.ChartAreas.Add(m_ChartArea);
            chartTest.Series.Add(m_Series);
            chartTest.Legends.Add(m_Legend);
            chartTest.Titles.Add(m_Title);

            m_Timer.Tick += M_Timer_Tick;
            m_Timer.Tick += M_Timer_Tick_2;
        }

        private void M_Timer_Tick(object sender, EventArgs e)
        {
            int yVal = m_Random.Next(32, 70);

            if (m_Series.Points.Count < 20)
            {
                m_Series.Points[m_Series.Points.Count - 1].Label = " ";
                m_Series.Points.Add(yVal);
                m_Series.Points[m_Series.Points.Count - 1].Label = yVal.ToString() + "N";
                return;
            }

            m_Series.Points.RemoveAt(0);
            m_Series.Points[m_Series.Points.Count - 1].Label = " ";
            m_Series.Points.Add(yVal);
            m_Series.Points[m_Series.Points.Count - 1].Label = yVal.ToString() + "N";
        }

        private void M_Timer_Tick_2(object sender, EventArgs e)
        {
            int yVal = m_Random.Next(32, 70);

            if (m_Series_2.Points.Count < 20)
            {
                m_Series_2.Points[m_Series_2.Points.Count - 1].Label = " ";
                m_Series_2.Points.Add(yVal);
                m_Series_2.Points[m_Series_2.Points.Count - 1].Label = yVal.ToString() + "N";
                return;
            }

            m_Series_2.Points.RemoveAt(0);
            m_Series_2.Points[m_Series_2.Points.Count - 1].Label = " ";
            m_Series_2.Points.Add(yVal);
            m_Series_2.Points[m_Series_2.Points.Count - 1].Label = yVal.ToString() + "N";
        }

        private void SetChartArea()
        {
            m_ChartArea.Name = "TestChartArea";
            m_ChartArea.AxisX.Minimum = 1;
            m_ChartArea.AxisX.Maximum = 23;
            m_ChartArea.AxisY.Minimum = 0d;
            m_ChartArea.AxisY.Maximum = 80d;
            m_ChartArea.AxisX.IsStartedFromZero = true; // X 轴起点从0开始 没摸索出来有啥用
            m_ChartArea.AxisX.IntervalOffset = 0;
            m_ChartArea.AxisX.Interval = 2;
            m_ChartArea.AxisX.IsMarginVisible = false;

            m_ChartArea.AxisX.MajorGrid.Enabled = true; //X轴上网格
            m_ChartArea.AxisY.MajorGrid.Enabled = true; //Y轴上网格
            m_ChartArea.AxisX.Title = "X轴";
            m_ChartArea.AxisY.Title = "Y轴";
            m_ChartArea.AxisX.TitleAlignment = System.Drawing.StringAlignment.Far;
            m_ChartArea.AxisY.TitleAlignment = System.Drawing.StringAlignment.Far;
        }

        private void SetSeries()
        {
            m_Series.ChartArea = "TestChartArea";
            m_Series.ChartType = SeriesChartType.Spline;
            m_Series.Color = System.Drawing.Color.Blue;
            m_Series.BorderWidth = 1;
            m_Series.MarkerColor = System.Drawing.Color.Green;
            m_Series.MarkerSize = 5;
            m_Series.MarkerStyle = MarkerStyle.Circle;
            m_Series.Legend = "No.1";
            m_Series.LegendText = "保压压力";

            //series.Points.AddXY(0, 1);
            m_Series.Points.AddXY("0", 0); // 这样跟X标签一起添加
            m_Series.Points.AddXY("1", 10);
            m_Series.Points.AddXY("2", 35);
            m_Series.Points.AddXY("3", 32);
            m_Series.Points.AddXY("4", 79);
            m_Series.Points.AddXY("5", 40);
            m_Series.Points.AddXY("6", 67);
            m_Series.Points.AddXY("7", 77);
            m_Series.Points.AddXY("8", 48);

            // Label 显示最后添加的一个数据 Y 值
            m_Series.IsValueShownAsLabel = true;
            m_Series.Label = "#LABEL";
            for (int i = 0; i < m_Series.Points.Count; i++)
            {
                if (i < m_Series.Points.Count - 1)
                {
                    m_Series.Points[i].Label = " "; // 给个空白
                    continue;
                }

                m_Series.Points[i].Label = m_Series.Points[i].YValues[0].ToString() + "N";
            }


            /***********曲线二************/

            m_Series_2 = new Series("Series Name NO.2");
            m_Series_2.ChartType = SeriesChartType.Line;
            m_Series_2.MarkerColor = System.Drawing.Color.Green;
            m_Series_2.MarkerSize = 5;
            m_Series_2.MarkerStyle = MarkerStyle.Circle;
            chartTest.Series.Add(m_Series_2);
            m_Series_2.LegendText = "压力值";
            m_Series_2.Points.Add(4);
            m_Series_2.Points.Add(10);
            m_Series_2.Points.Add(45);
            m_Series_2.Points.Add(66);
            m_Series_2.Points.Add(45);
            m_Series_2.Points.Add(23);
            m_Series_2.Points.Add(56);
        }

        private void SetTitle()
        {
            // 标题
            // 在 Constructor()  Add 添加了
        }

        private void SetLegend()
        {
            m_Legend.Docking = Docking.Top; // 位置
        }

        private void SetStripLine()
        {
            // 加一条线 红色警告线 
            StripLine stripline = new StripLine();
            stripline.Interval = 0;
            stripline.IntervalOffset = 38;
            stripline.StripWidth = 0.3;
            stripline.BackColor = System.Drawing.Color.Red;
            stripline.BorderDashStyle = ChartDashStyle.Solid;
            stripline.TextAlignment = System.Drawing.StringAlignment.Near;
            stripline.Text = "下限:38";
            m_ChartArea.AxisY.StripLines.Add(stripline);
            stripline = new StripLine();
            stripline.Interval = 0;
            stripline.IntervalOffset = 68;
            stripline.StripWidth = 0.2;
            stripline.Text = "上限:68";
            stripline.TextLineAlignment = System.Drawing.StringAlignment.Far;
            stripline.TextAlignment = System.Drawing.StringAlignment.Near;
            stripline.BackColor = System.Drawing.Color.Red;
            stripline.BorderDashStyle = ChartDashStyle.Solid;
            m_ChartArea.AxisY.StripLines.Add(stripline);
        }

        private void btn_Start_Click(object sender, RoutedEventArgs e)
        {
            m_Timer.Enabled = true;
        }

        private void btn_Stop_Click(object sender, RoutedEventArgs e)
        {
            m_Timer.Enabled = false;
        }

        private void btn_ChangeEnable_Click(object sender, RoutedEventArgs e)
        {
            m_Series_2.Enabled = !m_Series_2.Enabled;
        }
    }
}

参考：

https://www.cnblogs.com/stackmiao/p/11463284.html

https://www.cnblogs.com/ljhandsomeblog/p/11239859.html

https://www.cnblogs.com/Betty-IT/p/9198557.html

https://zhuanlan.zhihu.com/p/337334836 // c# 在已经画好的chart上画一条线

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