public DataSet load_bv_login(string username, string password)
{
ora_conn = new CConnection_Oracle();
ds = new DataSet();
sql = "select * from " + schema + ".bv_login where Upper(username)=Upper('" + username + "') and password='******'";
ds = ora_conn.getData(sql);
// AccessData libc = new AccessData();
//ds=libc.get_data(sql);
return(ds);
}