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Simple function to Add a number of weekdays to a date

/// <summary>
/// Takes a reference date and add or subtracts a specified number of weekdays.
/// </summary>
/// <param name="date">The reference date.</param>
/// <param name="offset">The number of days to offset by.</param>
/// <returns>The reference date plus or minus the specified number of weekdays.</returns>
private DateTime AddWeekDays( DateTime date, int offset)
{
	int daysAdded = 0;
	int addDay = 1;
	if (offset < 0)
	{
		addDay = -1;
	}
	DateTime result = date;
	do
	{
		if (daysAdded == offset)
		{
			break;
		}
		if (result.DayOfWeek != DayOfWeek.Saturday && result.DayOfWeek != DayOfWeek.Sunday)
		{
			daysAdded = daysAdded + addDay;
		}
		result = result.AddDays(addDay);
	} while (true);
	return result;
}