conexion de informix con Vb.net

[marko249]

hola
tengo esto

' Conexion con la base dedatos
Dim cnn As Odbc.OdbcConnection
cnn = New Odbc.OdbcConnection
cnn.ConnectionString = "DSN=eu"
Dim sql As String = "SELECT incio_cclo AS Inicio, fin_cclo AS Fin, cdgo_cclo AS Cliclo FROM cclos WHERE estdo_cclo = 'PR'"
Dim dsCategorias As New DataSet
'Dim AdapterCategorias As New OdbcDataAdapter(sql, cnn)
'////////////////////////

' aqui genera error
cnn.Open()

'//////////////////


y no me funciona tengo una conexion por odbc pero me genera error