//Create a connection to Oracle
            string conString = "User Id=hr; password=hr;" +

            //EZ Connect Format is [hostname]:[port]/[service_name]
            //Examine working TNSNAMES.ORA entries to find these values
            "Data Source=localhost:1521/pdborcl; Pooling=false;";

            OracleConnection con = new OracleConnection();
            con.ConnectionString = conString;
            con.Open();

            //Create a command within the context of the connection
            //Use the command to display employee names and salary from the Employees table
            OracleCommand cmd = con.CreateCommand();
            cmd.CommandText = "select first_name from employees where department_id = 60";

            //Execute the command and use datareader to display the data
            OracleDataReader reader = cmd.ExecuteReader();
            while (reader.Read())
            {
                MessageBox.Show("Employee Name: " + reader.GetString(0));
            }