asp.net - oledbConnection.Open() yields Error E_FAIL(0x80004005) when attempting to connect to Informix db using DSN -

i'm trying connect informix database using oledbconnection object, using vb in asp.net script here's code looks like;

dim oledbconnection = new oledbconnection("provider=ifxoledbc;dsn=dwh;") qry = "select location dim_location" try    oledbconnection.open()  '<-- interpreter bails here    'otherstuff    oledbconnection.close() catch ex exception    return ex.message() end try 

everywhere else looked problem occurs @ query, not case me, can please help

below easy syntax creating oledb connection on informix. might want change code piece new oledbconnection("provider=ifxoledbc;dsn=dwh;") match below

 provider=any oledb provider name;oledbkey1=somevalue;oledbkey2=somevalue; 

hope helps!