WPF_Practice/PacticeSolution/LiveChartPractice/MainWindow.xaml.cs

using LiveCharts.Wpf;
using LiveCharts;
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.Timers;

namespace LiveChartPractice
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private Timer _timer;
        private Random _rand;

        private SampleData _data;

        public MainWindow()
        {
            InitializeComponent();
            InitInstance();
        }

        private void InitInstance()
        {
            _data = this.DataContext as SampleData;

            _timer = new Timer();
            _timer.Elapsed -= _timer_Elapsed;
            _timer.Elapsed += _timer_Elapsed;
            _timer.Interval = 100;
            _timer.Stop();

            _rand = new Random();
        }

        private void btnSeriesAdd_Click(object sender, RoutedEventArgs e)
        {
            if (_data == null)
                return;

            _data.SeriesCollection.Add(new LineSeries
            {
                Title = $"Series {_data.SeriesCollection.Count + 1}",
                Values = new ChartValues<double> { _rand.Next(1, 8), _rand.Next(1, 8), _rand.Next(1, 8), _rand.Next(1, 8), _rand.Next(1, 8) },
                LineSmoothness = _rand.Next(0, 2), //0: straight lines, 1: really smooth lines
                //PointGeometry = Geometry.Parse("m 25 70.36218 20 -28 -20 22 -8 -6 z"),
                //PointGeometrySize = 50,
                //PointForeground = Brushes.Gray
            });
        }

        private void btnRT_Click(object sender, RoutedEventArgs e)
        {
            if (_data == null)
                return;

            _timer.Start();
        }

        private void _timer_Elapsed(object? sender, ElapsedEventArgs e)
        {
            _data.SingleSeries[0].Values.Add(_rand.NextDouble() * 10.0);
        }
    }
}