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The Excel EOMONTH function returns the last day of the month, n months in the past or future. You can use EOMONTH to calculate expiration dates, due dates, and other dates that need to land on the last day of a month. Use a positive value for...
To get the first and last day of the current month, use the getFullYear() and getMonth() methods to get the current year and month and pass them to the Date() constructor to get an object representing the two dates. Copied! const now = new Date(); const firstDay = new Date(now. getFullYear(), now.
Another way of doing it:
DateTime today = DateTime.Today;
DateTime endOfMonth = new DateTime(today.Year,
today.Month,
DateTime.DaysInMonth(today.Year,
today.Month));
Something like:
DateTime today = DateTime.Today;
DateTime endOfMonth = new DateTime(today.Year, today.Month, 1).AddMonths(1).AddDays(-1);
Which is to say that you get the first day of next month, then subtract a day. The framework code will handle month length, leap years and such things.
public static class DateTimeExtensions
{
public static DateTime LastDayOfMonth(this DateTime date)
{
return date.AddDays(1-(date.Day)).AddMonths(1).AddDays(-1);
}
}
DateTime.DaysInMonth(DateTime.Now.Year, DateTime.Now.Month)
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