static void Test7()
        {
            var strs = new List<string>
            {
                "192.168.100.125",
                "192.168.100.126",
                "192.168.100.127",
                "192.168.100.128",
                "192.168.100.130",
                "192.168.100.131
 
"
            };
            var d = GetRandom(strs);
        }

        public static T GetRandom<T>(List<T> list)
        {
            System.Random ran = new System.Random(GetRandomSeed());
            var t = ran.Next(0, list.Count);
            return list[t];
        }

隨機算法