详解可选参数和命名参数实例
9.1 可选参数和命名参数 class Program{private static int s_n = 0;private static void M(int x = 9, string s = "A", DateTime dt = default(DateTime), Guid guid = new Guid()){Console.WriteLine("x={0},s={1},dt={2},guid={3}", x, s, dt, guid);}public static void Main()