1         static void Main(string[] args) 2         { 3             List<int> integers = new List<int>(); 4             for (int i = 1; i < 5; i++) 5             { 6                 integers.Add(i); 7             } 8             Converter<int, double> converters = TakeSquareRoot;//创建委托实例 9             List<double> doubles;10             doubles = integers.ConvertAll<double>(converters);//调用泛型方法转换列表11             foreach (var item in doubles)12             {13                 Console.WriteLine(item);14             }15 16             Console.ReadKey();17         }18 19         public static double TakeSquareRoot(int x)20         {21             return Math.Sqrt(x);22         }