Why I get “System.Data.DataRowView” instead of real values in my drop down list : i try to get data in drop down list and its not work i dont understand whats the problem.

  

     string connString = @" Data Source=(LocalDB)\v11.0;AttachDbFilename='C:\Users\oshri\Documents\Stock scores.mdf';Integrated Security=True;Connect Timeout=30";
                string queryLecturer = "select name_student from student";
                SqlConnection conn = new SqlConnection(connString);
                //SqlCommand cmdL = new SqlCommand(queryLecturer, conn);
                conn.Open();
                //SqlCommand SQLCommand = new SqlCommand();
                //cmdL.CommandType = CommandType.Text;
                //SQLCommand.CommandText = queryLecturer;
                //conn.Close();
                SqlDataAdapter adapter = new SqlDataAdapter(queryLecturer, conn);
                adapter.Fill(subjects);
    
                DropDownListID.DataSource = subjects;
                DropDownListID.DataBind();
               
                DropDownListID.DataBind();  
                conn.Close();
    enter code here