private void CreateBillsForDateRange()
{
var days = (EndDate - StartDate).TotalDays;
double dayCount = 0.0;
var spacings = 0; //weeks, months, fortnights, 4weeks etc
NewBills.Clear();
switch (DueDateFrequency)
{
case DueDateFrequencies.OneWeek:
while (dayCount <= days)
{
dayCount = (StartDate.AddDays((spacings + 1) * 7) - StartDate).TotalDays;
spacings++;
}
for (int i = 0; i < spacings; i++)
{
NewBills.Add(new NewMultiBillViewModel(i + 1, StartDate.AddDays(7 * i)));
}
break;
case DueDateFrequencies.TwoWeek:
while (dayCount <= days)
{
dayCount = (StartDate.AddDays((spacings + 1) * 14) - StartDate).TotalDays;
spacings++;
}
for (int i = 0; i < spacings; i++)
{
NewBills.Add(new NewMultiBillViewModel(i + 1, StartDate.AddDays(14 * i)));
}
break;
case DueDateFrequencies.FourWeek:
while (dayCount <= days)
{
dayCount = (StartDate.AddDays((spacings + 1) * 28) - StartDate).TotalDays;
spacings++;
}
for (int i = 0; i < spacings; i++)
{
NewBills.Add(new NewMultiBillViewModel(i + 1, StartDate.AddDays(28 * i)));
}
break;
case DueDateFrequencies.Monthly:
while (dayCount <= days)
{
dayCount = (StartDate.AddMonths(spacings + 1) - StartDate).TotalDays;
spacings++;
}
for (int i = 0; i < spacings; i++)
{
NewBills.Add(new NewMultiBillViewModel(i + 1, StartDate.AddMonths(i)));
}
break;
case DueDateFrequencies.Quarterly:
while (dayCount <= days)
{
dayCount = (StartDate.AddMonths(3 * (spacings + 1)) - StartDate).TotalDays;
spacings++;
}
for (int i = 0; i < spacings; i++)
{
NewBills.Add(new NewMultiBillViewModel(i + 1, StartDate.AddMonths(3 * i)));
}
break;
case DueDateFrequencies.SemiAnnually:
while (dayCount <= days)
{
dayCount = (StartDate.AddMonths(6 * (spacings + 1)) - StartDate).TotalDays;
spacings++;
}
for (int i = 0; i < spacings; i++)
{
NewBills.Add(new NewMultiBillViewModel(i + 1, StartDate.AddMonths(6 * i)));
}
break;
case DueDateFrequencies.Yearly:
while (dayCount <= days)
{
dayCount = (StartDate.AddYears(spacings + 1) - StartDate).TotalDays;
spacings++;
}
for (int i = 0; i < spacings; i++)
{
NewBills.Add(new NewMultiBillViewModel(i + 1, StartDate.AddYears(i)));
}
break;
default:
break;
}
RaisePropertyChanged(nameof(BillCount));
}
private void ResetNewBillsToSingle()
{
NewBills.Clear();
NewBills.Add(new NewBillViewModel(StartDate));
}