private void BubbleSortDescending(WeekdayTotal[] arr)
        {
            for (int i = arr.Length - 1; i > 0; i--)
            {
                for (int j = 0; j <= i - 1; j++)
                {
                    if (arr[j].TotalVisitors < arr[j + 1].TotalVisitors)

                    {
                        WeekdayTotal big = arr[j];
                        arr[j]     = arr[j + 1];
                        arr[j + 1] = big;
                    }
                }
            }
        }
        public WeeklyReport()
        {
            InitializeComponent();
            ReadFromCsv();

            //get all days of week
            weekdays = Enum.GetNames(typeof(DayOfWeek));
            //remove weekend
            weekdays = weekdays.Where(value => value != "Saturday" && value != "Sunday").ToArray();

            for (int i = 0; i < 5; i++)
            {
                weekdaysTotal[i] = new WeekdayTotal();
            }

            orderSelector.SelectedIndex = 0;
            //trigger weekpicker_value changed
        }