[C#]NextDouble

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關鍵代碼：

        /// <summary>        /// 產生設定範圍內的Double的隨機數        /// eg:_random.NextDouble(1.5, 2.5)        /// </summary>        /// <param name="random">Random</param>        /// <param name="miniDouble">產生隨機數的最大值</param>        /// <param name="maxiDouble">產生隨機數的最小值</param>        /// <returns>當Random等於NULL的時候返回0;</returns>        public static double NextDouble(this Random random, double miniDouble, double maxiDouble)        {            if (random != null)            {                return random.NextDouble() * (maxiDouble - miniDouble) + miniDouble;            }            else            {                return 0.0d;            }        }

測試代碼：

        static void Main(string[] args)        {            try            {                Random _random = new Random();                for (int i = 0; i < 10; i++)                {                    Console.WriteLine(_random.NextDouble(1.5, 2.5));                }            }            catch (Exception ex)            {                Console.WriteLine(ex.Message);            }            finally            {                Console.ReadLine();            }        }

測試結果：