求大神帮忙指导一下这段代码，感激不尽。

想要达到的结果是将文本文件中的坐标读到数组中，然后根据坐标计算两点间的距离，菜鸟一个，求帮助。。。
namespace wenbenwenjian
{
    public struct Point
    {
        public double X;
        public double Y;
    }
    class Program
    {
        static void Main(string[] args)
        {
            // Point[] pts = new Point[10];
            List<Point> points = new List<Point>();
            Point pt1 = new Point();

            StreamReader sr = new StreamReader("11改.txt");
            string content = sr.ReadToEnd();
            string[] str = content.Split(new string[] { "\r\n" }, StringSplitOptions.None);
            for (int i = 0; i < str.Length; i++)
            {
                Console.WriteLine("第 {0} 行: {1}", i + 1, str[i]);
                Console.ReadLine();
            }

            pt1.X = Convert.ToDouble(str[1]);
            pt1.Y = Convert.ToDouble(str[2]);
            points.Add(pt1);

            double dist = (points[1].Y - points[0].Y) * (points[1].Y - points[0].Y) + (points[1].X - points[0].X) * (points[1].X - points[0].X);
            double RESULT = Math.Sqrt(Math.Abs(dist));
            Console.WriteLine(RESULT);
            Console.ReadKey();
        }
    }
}