public string; public using

i put the code below inside a Module but I encounter an error

Code:

---

        public static string ConStr = "Provider=Microsoft.Jet.OleDB.4.0; Data Source =" + Application.StartupPath + "\\db1.mdb";
        public using (OleDbConnection Conn = new OleDbConnection(ConStr))

---

what should I do?

You can only use a 'using' block with local variables. The whole point of a 'using' block is to create an object and dispose it at the end of the block. It wouldn't make sense to dispose an object assigned to a member variable immediately would it? You would get rid of the 'using' and just declare a regular old OleDbConnection variable.