添加项目文件。

Live-Charts-master/Examples/Wpf/CartesianChart/ThreadSafe/RelyCommand.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Windows.Input;
+
+namespace Wpf.CartesianChart.ThreadSafe
+{
+    public class RelayCommand : ICommand
+    {
+        private Action _action;
+
+        public RelayCommand(Action action)
+        {
+            _action = action;
+        }
+
+        public bool CanExecute(object parameter)
+        {
+            return true;
+        }
+
+        public void Execute(object parameter)
+        {
+            _action();
+        }
+
+        public event EventHandler CanExecuteChanged;
+    }
+}