string dbname = Server.MapPath("App_Data/basketball.mdb");

        OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OleDb.4.0; Data Source=" + dbname);
        conn.Open();
        OleDbDataAdapter da = new OleDbDataAdapter("select qian from t_arranges where quautity<2", conn);//quautity字段表示被抽次数
        DataSet ds = new DataSet();
        da.Fill(ds, "t_table");