添加项目文件。

Live-Charts-master/Examples/UWP/CartesianChart/CustomTooltipAndLegend/CustomersLegend.xaml.cs

@@ -0,0 +1,39 @@
+using LiveCharts.Uwp;
+using System.Collections.Generic;
+using System.ComponentModel;
+using Windows.UI.Xaml.Controls;
+
+// The User Control item template is documented at http://go.microsoft.com/fwlink/?LinkId=234236
+
+namespace UWP.CartesianChart.CustomTooltipAndLegend
+{
+    public sealed partial class CustomersLegend : UserControl, IChartLegend
+    {
+        private List<SeriesViewModel> _series;
+
+        public CustomersLegend()
+        {
+            InitializeComponent();
+
+            DataContext = this;
+        }
+
+        public List<SeriesViewModel> Series
+        {
+            get { return _series; }
+            set
+            {
+                _series = value;
+                OnPropertyChanged("Series");
+            }
+        }
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        public void OnPropertyChanged(string propertyName = null)
+        {
+            if (PropertyChanged != null)
+                PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+    }
+}