public void RunWithoutOpen()
        {
            var driver = new XlsDriver();

            Assert.IsNotNull(driver);
            var connection = driver.Connect(XlsUri);

            driver.ListTables(connection);
        }
        public void ListTables()
        {
            var driver = new XlsDriver();

            using (var connection = driver.Connect(XlsUri)){
                connection.Open();
                var dt = driver.ListTables(connection);
                Assert.AreEqual(dt.Length, 3);
                connection.Close();
            }
        }