添加项目文件。

Live-Charts-master/Examples/Wpf/CartesianChart/MaterialCards/MaterialCards.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading;
+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.Threading;
+using LiveCharts;
+using LiveCharts.Defaults;
+using LiveCharts.Wpf;
+using Wpf.Annotations;
+
+namespace Wpf.CartesianChart.MaterialCards
+{
+    /// <summary>
+    /// Interaction logic for MaterialCards.xaml
+    /// </summary>
+    public partial class MaterialCards : UserControl, INotifyPropertyChanged
+    {
+        private double _lastLecture;
+        private double _trend;
+
+        public MaterialCards()
+        {
+            InitializeComponent();
+
+            LastHourSeries = new SeriesCollection
+            {
+                new LineSeries
+                {
+                    AreaLimit = -10,
+                    Values = new ChartValues<ObservableValue>
+                    {
+                        new ObservableValue(3),
+                        new ObservableValue(5),
+                        new ObservableValue(6),
+                        new ObservableValue(7),
+                        new ObservableValue(3),
+                        new ObservableValue(4),
+                        new ObservableValue(2),
+                        new ObservableValue(5),
+                        new ObservableValue(8),
+                        new ObservableValue(3),
+                        new ObservableValue(5),
+                        new ObservableValue(6),
+                        new ObservableValue(7),
+                        new ObservableValue(3),
+                        new ObservableValue(4),
+                        new ObservableValue(2),
+                        new ObservableValue(5),
+                        new ObservableValue(8)
+                    }
+                }
+            };
+            _trend = 8;
+
+#if NET40
+            Task.Factory.StartNew(() =>
+            {
+                var r = new Random();
+
+                Action action = delegate
+                {
+                    LastHourSeries[0].Values.Add(new ObservableValue(_trend));
+                    LastHourSeries[0].Values.RemoveAt(0);
+                    SetLecture();
+                };
+
+                while (true)
+                {
+                    Thread.Sleep(500);
+                    _trend += (r.NextDouble() > 0.3 ? 1 : -1) * r.Next(0, 5);
+                    Application.Current.Dispatcher.Invoke(DispatcherPriority.Normal, action);
+                }
+            });
+#endif
+#if NET45
+            Task.Run(() =>
+            {
+                var r = new Random();
+                while (true)
+                {
+                    Thread.Sleep(500);
+                    _trend += (r.NextDouble() > 0.3 ? 1 : -1)*r.Next(0, 5);
+                    Application.Current.Dispatcher.Invoke(() =>
+                    {
+                        LastHourSeries[0].Values.Add(new ObservableValue(_trend));
+                        LastHourSeries[0].Values.RemoveAt(0);
+                        SetLecture();
+                    });
+                }
+            });
+#endif
+
+            DataContext = this;
+        }
+
+        public SeriesCollection LastHourSeries { get; set; }
+        
+        public double LastLecture
+        {
+            get { return _lastLecture; }
+            set
+            {
+                _lastLecture = value;
+                OnPropertyChanged("LastLecture");
+            }
+        }
+
+        private void SetLecture()
+        {
+            var target = ((ChartValues<ObservableValue>)LastHourSeries[0].Values).Last().Value;
+            var step = (target - _lastLecture) / 4;
+#if NET40
+            Task.Factory.StartNew(() =>
+            {
+                for (var i = 0; i < 4; i++)
+                {
+                    Thread.Sleep(100);
+                    LastLecture += step;
+                }
+                LastLecture = target;
+            });
+#endif
+#if NET45
+            Task.Run(() =>
+            {
+                for (var i = 0; i < 4; i++)
+                {
+                    Thread.Sleep(100);
+                    LastLecture += step;
+                }
+                LastLecture = target;
+            });
+#endif
+        }
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        protected virtual void OnPropertyChanged(string propertyName = null)
+        {
+            var handler = PropertyChanged;
+            if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
+        }
+
+        private void UpdateOnclick(object sender, RoutedEventArgs e)
+        {
+            TimePowerChart.Update(true);
+        }
+    }
+}