class Program
    {
        static void Main(string[] args)
        {
            SqlConnection con = new SqlConnection("server=.;uid=sa;pwd=123456789;database=MyTable");
            try
            {
                con.Open();          

                   Console.WriteLine("連接數據庫成功");         
            }
            catch
            {
                Console.WriteLine("無法連接數據庫");         
            }
            Console.ReadKey();
        }
    }