how can add month without change number of days

Question

I want to create multiple dates .I get a specific date from the user and I want to add a month based on that date, but I do not want to change the number of days, for example. User enter 2020-10-10 The next dates are the 10th of each month

Answer 1

You can just use DateTime.AddMonths(x) where x means the number of months you want to add (or to substract if x < 0). You can as example create a for loop for x = 1 to 10 and then print these 10 dates. Of course, it's never ruled out when adding exact one month that the day will change.