private void PopulateGoalsListBox() { // get categories from DB var rdr = DB_API.SelectAccountGoals(account_id); // extract goal names for listBox this.user_goals = new List <string>(); var res = new List <string>(); while (rdr.Read()) { string goal_name = rdr[DB_API.CategoryEnt.name.ToString()].ToString(); user_goals.Add(goal_name); res.Add(goal_name); } Goals_listBox.DataSource = new List <string>(res); }