public class User

{

public int Id { get; set; }

public string Code { get; set; }

}

//示例

//升序

list.Sort(delegate(User v1, User v2)

{

return v1.Code.CompareTo(v2.Code);

});

//降序

//list.Sort(delegate(User v1, User v2)

//{

// return v2.Code.CompareTo(v1.Code);

//});