Sample for making deep copy of any object in c#

gistfile1.cs

[Serializable]
    public class temp
    {
       public int a;
    }
    class Program
    {
        public static T DeepClone<T>(T a)
        {
            using (MemoryStream stream = new MemoryStream())
            {
                BinaryFormatter formatter = new BinaryFormatter();
                formatter.Serialize(stream, a);
                stream.Position = 0;
                return (T)formatter.Deserialize(stream);
            }
        }
        static void Main(string[] args)
        {
            List<temp> list1 = new List<temp>();
            list1.Add(new temp { a = 1 });
            list1.Add(new temp { a = 2 });
            list1.Add(new temp { a = 3 });
            List<temp> list2 = DeepClone<List<temp>>(list1);
            list1[1].a = 4;
            Console.WriteLine(list2[1].a);
            Console.ReadKey();
        }
    }