如何从WPF中的app.config获取List <string>值集合？

  <appSettings>
    <add key="MyList" value="item1,item2,item3" />
  </appSettings>
</configuration>

using System;
using System.Collections.Generic;
using System.Configuration;

namespace MyWPFApp
{
    public class MySettings
    {
        public static List<string> MyList
        {
            get
            {
                string setting = ConfigurationManager.AppSettings["MyList"];
                return new List<string>(setting.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries));
            }
        }
    }
}

using System;
using System.Collections.Generic;

namespace MyWPFApp
{
    public class Program
    {
        public static void Main(string[] args)
        {
            List<string> myList = MySettings.MyList;
            foreach (string item in myList)
            {
                Console.WriteLine(item);
            }
        }
    }
}

item1
item2
item3