用Linq对String类型的数字求和

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Func<string, double, double> funDelegate = CustomCount;  
            string[] strArry = new string[] { "73.86", "66.25", "95.57", "33.54", "55.05"};
            double numSum = 0;
            numSum = strArry.Sum(s => funDelegate(s, numSum));

            Console.WriteLine(numSum);

            Console.ReadKey();
        }
        public static double CustomCount(string strNum,double Sum)
        {
            Sum += Convert.ToDouble(strNum);
            return Sum;
        }

    }
}

运行结果：