Вставка в базу access

OleDbCommand cmd = new OleDbCommand("SELECT book_index FROM Books", conn);
            OleDbDataReader read = cmd.ExecuteReader();
            int counter = 0;
            while (read.Read())
            {
                counter++;
            }
 
            counter++;
            label3.Text = Convert.ToString(counter);
            q = "INSERT INTO Books(book_index, title, author_name, author_lname, rent, shelf, author_num) VALUES(" + Convert.ToUInt32(counter) + "," + tb_title.Text + "," + tb_a_name.Text + "," + tb_a_lname.Text + "," + tb_rent.Text + "," + Convert.ToUInt32(tb_shelf.Text) + "," + tb_a_num.Text + ")";
            MessageBox.Show(q);
            cmd = new OleDbCommand(q, conn);
            read = cmd.ExecuteReader();

 read = cmd.ExecuteReader();

OleDbCommand cmd = new OleDbCommand("INSERT INTO Books(book_index, title, author_name, author_lname, rent, shelf, author_num) VALUES("@index, @title, @name_a, @lname_a, @rent, @shelf, @num_a"), connection);
cmd.Parameters.Add("@index", OleDbType.Int);
cmd.Parameters["@index"].Value = Convert.ToUInt32(counter);
cmd.Parameters.Add("@title", OleDbType.VarChar);
cmd.Parameters["@title"].Value = tb_title.Text;
//и так далее все параметры
//после идентификации всех параметров пишешь
cmd.ExecuteNonQuery();