/// <summary>
/// Move to the next month.
/// </summary>
public void NextMonth()
{
// Get the number of months to move
int move = _calendar.ScrollChange;
if (move == 0)
{
move = 1;
}
// Calculate the next set of months shown
DateTime nextMonth = _displayMonth.AddMonths(move);
DateTime lastDate = nextMonth.AddMonths(_calendar.CalendarDimensions.Width *
_calendar.CalendarDimensions.Height);
DateTime ld = lastDate.AddDays(-1);
DateTime ldofm = LastDayOfMonth(_calendar.MaxDate);
// We do not move the month if doing so moves it past the maximum date
if (lastDate.AddDays(-1) <= LastDayOfMonth(_calendar.MaxDate))
{
// Use the newly calculated month
_displayMonth = nextMonth;
// If the end of the selection is no longer visible
if (_calendar.SelectionEnd < _displayMonth)
{
// Find new selection dates
DateTime newSelStart = _calendar.SelectionStart.AddMonths(move);
DateTime newSelEnd = _calendar.SelectionEnd.AddMonths(move);
// Impose the min/max dates
if (newSelStart > _calendar.MaxDate)
{
newSelStart = _calendar.MaxDate;
}
if (newSelEnd > _calendar.MaxDate)
{
newSelEnd = _calendar.MaxDate;
}
// Shift selection onwards
_calendar.SetSelectionRange(newSelStart, newSelEnd);
}
_needPaintDelegate(this, new NeedLayoutEventArgs(true));
}
}
