Subtract one month from Datetime.Today

Question

I have a DateTimePicker in which I allow user to select month previous to the current year.

The problem is, that if the date is 1st January, it can\'t calc

Answer 1

If you, like Adil H. Raza, don't like to have negative numbers in your code, you could also make an extension method:

public static DateTime SubtractMonths(this DateTime dt, int months) => dt.AddMonths(-months);

And use it like

var lastmonth = DateTime.Today.SubtractMonths(1);