对象深克隆

[System.Serializable]
class TestA
{
    public int[] aaa ={0,0,0 };
    public object GetClone(object obj)
    {
        using(System.IO.MemoryStream sm=new System.IO.MemoryStream())
        {
            System.Runtime.Serialization.Formatters.Binary.BinaryFormatter binaryformatter =
                new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
            binaryformatter.Serialize(sm, obj);
            sm.Seek(0, System.IO.SeekOrigin.Begin);
            object ob = binaryformatter.Deserialize(sm);
            return ob;
        }
    }

    public object GetClone2(object o)
    {
        return this.MemberwiseClone();
    }
}