Getting number of days for a specific month

Question

how could i programmatically detect, how many days are there for a particular month & year.

Answer 1

It's already there:

DateTime.DaysInMonth(int year, int month); 

should do it.

Answer 2

Something like this should do what you want:

static int GetDaysInMonth(int year, int month) {     DateTime dt1 = new DateTime(year, month, 1);     DateTime dt2 = dt1.AddMonths(1);     TimeSpan ts = dt2 - dt1;     return (int)ts.TotalDays; } 

You get the first day of the month, add one month and count the days in between.