public bool DeletePreferenceArea(int preferenceID, string areaIn)
        {
            string[] area;
            string[] dell = new string[] { ", " };
            area = areaIn.Split(dell, System.StringSplitOptions.None);
            DatabaseManager dbManager = new DatabaseManager();
            LocationManager locManager = new LocationManager();

            return (dbManager.NonReturnQuery("DELETE FROM Preference_Area WHERE Preference_ID = " + preferenceID + " AND Area_ID = " + locManager.AreaID(locManager.CityID(area[1], locManager.ProvinceID(area[0])), area[2]) + ";"));
        }
        public bool AddPreferenceArea(int preferenceID, string areaIn)
        {
            string[] area;
            string[] dell = new string[] { ", " };
            area = areaIn.Split(dell, System.StringSplitOptions.None);
            DatabaseManager dbManager = new DatabaseManager();
            LocationManager locManager = new LocationManager();

            return (dbManager.NonReturnQuery("INSERT INTO Preference_Area (Preference_ID, Area_ID) values (" + preferenceID + "," + locManager.AreaID(locManager.CityID(area[1], locManager.ProvinceID(area[0])), area[2]) + ");"));
        }
        public bool DeletePreferenceArea(int preferenceID, string areaIn)
        {
            string[] area;
            string[] dell = new string[] { ", " };
            area = areaIn.Split(dell, System.StringSplitOptions.None);
            DatabaseManager dbManager  = new DatabaseManager();
            LocationManager locManager = new LocationManager();

            return(dbManager.NonReturnQuery("DELETE FROM Preference_Area WHERE Preference_ID = " + preferenceID + " AND Area_ID = " + locManager.AreaID(locManager.CityID(area[1], locManager.ProvinceID(area[0])), area[2]) + ";"));
        }
        public bool AddPreferenceArea(int preferenceID, string areaIn)
        {
            string[] area;
            string[] dell = new string[] { ", " };
            area = areaIn.Split(dell, System.StringSplitOptions.None);
            DatabaseManager dbManager  = new DatabaseManager();
            LocationManager locManager = new LocationManager();

            return(dbManager.NonReturnQuery("INSERT INTO Preference_Area (Preference_ID, Area_ID) values (" + preferenceID + "," + locManager.AreaID(locManager.CityID(area[1], locManager.ProvinceID(area[0])), area[2]) + ");"));
        }