OleDbConnection  A connection to any OLE DB data source.
OdbcConnection   A connection to an ODBC data source.

        Dim command As Npgsql.NpgsqlCommand
        Dim dr As Npgsql.NpgsqlDataReader
        Dim i As Long
        cn = New Npgsql.NpgsqlConnection
        cn.ConnectionString = "DRIVER={PostgreSQL ANSI};DATABASE=basename;SERVER=serverIP;PORT=5432;Uid=username;Pwd=password;"
        cn.Open()
        command = New Npgsql.NpgsqlCommand
        command.CommandText = "select * from users"
        command.Connection = cn
        dr = command.ExecuteReader
        DataGridView1.DataSource = dr
        DataGridView1.Refresh()
        Console.WriteLine(Now)
        Do While dr.Read()
            For i =  0  To dr.FieldCount -  1 
                Console.Write("{0}|", dr.GetValue(i))
            Next
            Console.WriteLine()
        Loop
        cn.Close()