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{
    class Program
    {
        static void Main(string[] args)
        {
            OleDbConnection con = null;
            try
            {
                string sConnectionString =
                    "Provider=Microsoft.Jet.OLEDB.4.0;"
                    + @"data source=W:\access\Adressen.mdb";
                con = new OleDbConnection(sConnectionString);

                con.Open();
// und so weiter