//string sql3 = "select a.* from tk_cat a where a.havild in (select catid from tk_cat where catid=a.havild) order by wzid desc";
string sql3 = "select * from xsd_cat where catfid>0 ";
SqlDataAdapter sda2 = new SqlDataAdapter(sql3, strConn);
sda2.Fill(ds, "small");