定义后我可以这样来用它：
protected ArrayList result = null;
MyClass mc = new MyClass();
result = mc.return_array();
string my0_1 = result[0].m_aaa;
string my0_2 = result[0].m_bbb;
int my0_3 = result[0].m_ccc;
string my1_1 = result[1].m_aaa;
string my1_2 = result[1].m_bbb;
int my1_3 = result[1].m_ccc;
......
可见，该类返回的result是一个数组，而每个数组元素有包含多个属性。
类的属性如m_aaa,m_bbb,m_ccc可以在定义类是先分别赋好值。
本人对定义类不太熟，请高人指教，谢谢！
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- C# code
//实体类，users.csnamespace OwnerUsers{ public class Users { public Users(){} private int _id; private string _username; private string _password; public int ID { get{return _id;} set{_id = value;} } public string Userame { get{return _username;} set{_username= value;} } public string Password { get{return _password;} set{_password= value;} } }}//Testnamespace OwnerUsers{ pulic class Test { public static void Main(string[] args) { List<Users> list = new List<Users>(); for(int i=0; i<5; i++) { Users user = new Users(); user.ID = 1; user.Username = "U"+i.ToString(); user.Password = "P"+i.Tostring(); list.Add(user); } foreach(Users u in list) { Console.WriteLine("{},{1},{2}",u.ID,u.Username,u.Password); } } }}