namespace mdf
{
    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);
            }      
            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_user(Name,Password) values('admin','999999')";
                    cmd.ExecuteNonQuery();
                    Console.WriteLine("插入成功!");
                }
            }
            Console.ReadKey();
        }
    }
}