SQLDatareader select top from database and show on webform

Question

I have a connection class with this content:

 public class Dal

    {

        public SqlConnection connection()

        {

            SqlConnection conn = new SqlConnection(@"Data Source=.\SQLEXPRESS;Database=Manager_db; Integrated Security=true;");

            return conn;

        }

    }

in another class i have the method to select colums from my database:

        public SqlDataReader fillrecentchanges()

        {

            SqlConnection conn = databaseobj.connection();

            conn.Open();

            SqlCommand cmd = new SqlCommand(@"SELECT TOP 3 FROM Manager_tb", conn);

            SqlDataReader rdr = cmd.ExecuteReader();

            return rdr;

        }

How do i list the 3 first entry in a webform under each other without columnames?

// Jesper