using System.Data.SqlClient;

static void Main(string[] args)        {            string connString = @"Data Source=.; Initial Catalog=lh0216; User ID=sa;pwd=Founder123";            //出了using括號objConnection類會被自動釋放            using (SqlConnection objConnection = new SqlConnection(connString))            {                objConnection.Open();                Console.WriteLine("數據庫連接成功。");                using (SqlCommand objCmd = objConnection.CreateCommand())                {                    objCmd.CommandText = "INSERT INTO tbID(strName,strCname,iMax ) VALUES ('aaa','測試',1)";                    objCmd.ExecuteNonQuery();                    Console.WriteLine("插入數據成功。");                }            }                        Console.ReadKey();        }