.NET 2.0有 ConvertAll 方法，您可以在其中传递转换函数：

.NET 2.0 has the ConvertAll method where you can pass in a converter function:

List<int> l1 = new List<int>(new int[] { 1,2,3 } );
List<string> l2 = l1.ConvertAll<string>(delegate(int i) { return i.ToString(); });