string[] S = new string[100];
S.OrderBy(a=> a);

public class Arr {
            public string Str { get; set; }
            public DateTime Dt { get; set; }
        }


        private void button1_Click(object sender, EventArgs e) {
            var list = new List<Arr>();
            var arr= new Arr[10];
            for (int i = 0; i < arr.Length; i++) {
                list.Add(new Arr { Dt = DateTime.Now, Str = Guid.NewGuid().ToString() });
                arr.SetValue(new Arr{Dt = DateTime.Now, Str = Guid.NewGuid().ToString()},i);
            }
            var orderList = list.OrderBy(p => p.Dt);
            var orderArr = arr.OrderBy(p => p.Str);
        }