添加项目文件。

Live-Charts-master/Examples/WinForms/Cartesian/Linq/DataBase.cs

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+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+
+namespace Winforms.Cartesian.Linq
+{
+    public static class DataBase
+    {
+        static DataBase()
+        {
+            var reader = new StreamReader(File.OpenRead(@"cities.csv"));
+
+            var read = new List<City>();
+
+            while (!reader.EndOfStream)
+            {
+                var line = reader.ReadLine();
+                if (line != null)
+                {
+                    var values = line.Split(',');
+
+                    read.Add(new City
+                    {
+                        Name = values[0],
+                        Population = double.Parse(values[1], CultureInfo.InvariantCulture),
+                        Area = double.Parse(values[2], CultureInfo.InvariantCulture),
+                        Country = values[3]
+                    });
+                }
+            }
+
+            Cities = read.ToArray();
+        }
+
+        public static City[] Cities { get; private set; }
+
+    }
+}