控制台，winform内嵌mdf数据不显示问题

namespace ado.net

{

    class Program

    {

        static void Main(string[] args)

        {

            //内嵌mdf文件的方式，控制台和winForm要在Main函数的开头加如下代码，ASP.NET则不需要。

            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("DataDiretory", dataDir);

            }

            //连接数据库

            //SqlConnection代表一个数据库的连接，要用using进行管理。

//AttachDBFilename=D:\My Documents\Visual Studio 2008\Projects\ado.net\ado.net\Database1.mdf;

//如果使用AttachDBFilename=|DataDirectory|\Database1.mdf;将会默认去使用DataDirectory(\bin\Debug\)下的mdf

            using (SqlConnection conn = new SqlConnection(@"data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=D:\My Documents\Visual Studio 2008\Projects\ado.net\ado.net\Database1.mdf;User Instance=true"))

            //”SQLEXPRESS“:数据库的实例名

            //”Database1.mdf“:mdf文件名

             {

                 conn.Open();

                 using (SqlCommand cmd = conn.CreateCommand())

                 {

                     cmd.CommandText = "Insert into mytable1(Name) values('abc')";

                     cmd.ExecuteNonQuery();

                     Console.WriteLine("插入成功！");

                 }

                 

             }

             Console.WriteLine("打开数据库，连接成功");

             Console.ReadKey();

        }

    }

}