c#学习ado.net 向数据库插入一个用户名和密码

namespace 用户名密码插入
{
    class Program
    {
        static void Main(string[] args)
        {
            string dataDir = AppDomain.CurrentDomain.BaseDirectory;
            if (dataDir.EndsWith(@"\bin\Debug\") || dataDir.EndsWith(@"\bin\Release"))
            {
                dataDir = System.IO.Directory.GetParent(dataDir).Parent.Parent.FullName;
                AppDomain.CurrentDomain.SetData("DataDirectory", dataDir);
            }
            

            Console.WriteLine("请输入插入的用户名：");
            string username = Console.ReadLine();
            Console.WriteLine("请输入插入的密码：");
            string password = Console.ReadLine();
            using (SqlConnection conn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDBFilename=|DataDirectory|\Database1.mdf;Integrated Security=True;User Instance=True"))
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = "Insert into T_Users(UserName,Password) values ('" + username + "','" + password + "')";
                    cmd.ExecuteNonQuery();
                   
                    Console.WriteLine("插入成功");
                }

            }
         }
    }
}