MySqlConnection con = new MySqlConnection("datasource=localhost;port=3306;database=meal;username=root;password=july241998");
        string query1 = $"SELECT title from recipe where budget = listBox.SelectedItem";



        MySqlCommand cmd1 = new MySqlCommand(query1, con);

        con.Open();
        MySqlDataReader dr1 = cmd1.ExecuteReader();
        while (dr1.Read())
        {
            richtextBox.Append = dr1.GetString("budget");
        }
        con.Close();