将string[] 转换int[]

string id = "58,59";
                string[] fz = id.Split(new char[]{','},StringSplitOptions.RemoveEmptyEntries);
                int[] num = Array.ConvertAll<string, int>(fz, delegate(string s) { return int.Parse(s); });

                var i = from a in DataClass2.aa
                        where num.Contains(a.Id)
                        select a;

                foreach (var ii in i)
                    Console.WriteLine(ii.name);