C#关于日期月天数和一年有多少周及某年某周时间段的计算

public static int HowMonthDay(int y, int m)

public static void GetWeek(int nYear, int nNumWeek, out DateTime dtWeekStart, out DateTime dtWeekeEnd)

public static int GetYearWeekCount(int strYear)

public static int WeekOfYear(DateTime curDay)
{
{
{
int weeks = daysOutOneWeek / 7;
if (daysOutOneWeek % 7 != 0)
weeks++;

return weeks + 1;
}
}