如何计算C#中两个给定日期之间的实际月差(日历年不近似)？

DateTime startDate = DateTime.ParseExact("2022-01-01", "yyyy-MM-dd", CultureInfo.InvariantCulture);
DateTime endDate = DateTime.ParseExact("2022-06-30", "yyyy-MM-dd", CultureInfo.InvariantCulture);

TimeSpan totalDays = endDate - startDate;
int daysDifference = totalDays.Days;

int monthsDifference = 0;
DateTime tempDate = startDate;

while (tempDate < endDate)
{
    tempDate = tempDate.AddMonths(1);
    monthsDifference++;
}

if (tempDate > endDate)
{
    monthsDifference--;
}