__object *cn;
__object *rs;

cn = __object_create("ADODB.Connection");
rs = __object_create("ADODB.Recordset");

cn->ConnectionString = "PROVIDER=WinCCOLEDBProvider.1; SERVER=mypc\\WINCC; DATABASE=CC_BF1250_04-08-25_13:47:41R; UID=sa; PWD=sa";
cn->Open;

rs = cn->Execute("TAG:R , 'TankLevel//TankLevel','0000-00-00 00:10:00.000','0000-00-00 00:00:00.000'");
while(!rs->eof)
{
rs->Movenext;
}
rs->Close;
cn->Close;
__object_delete(rs);
__object_delete(cn);


我想看快速归档的结果，但这样写，记录集总是空的，始终无法进入while循环。请问是哪里有问题呀？谢谢。