请问,ASP.NET获取qq好友列表,这样写对吗？

OverredQQ.QQCore.Bean.QQUser u = new OverredQQ.QQCore.Bean.QQUser(qq号, "qq密码");
OverredQQ.QQCore.Misc.QQCache cache = new OverredQQ.QQCore.Misc.QQCache(u);
foreach (OverredQQ.QQCore.Bean.Uin uin in cache.AllFriends.Uins)
{
Response.Write(cache.AllFriends[uin].Nick + " " + Convert.ToString(uin) + " ");
}//这样写不知道对不对,虽然不会报错,但是也查询不到任何结果.请高手们帮忙解决一下,小弟感激不禁了.