How to get complete month name from DateTime

Question

Use the "MMMM" custom format specifier:

DateTime.Now.ToString("MMMM");

You can do as mservidio suggested, or even better, keep track of your culture using this overload:

DateTime.Now.ToString("MMMM", CultureInfo.InvariantCulture);

If you want the current month you can use DateTime.Now.ToString("MMMM") to get the full month or DateTime.Now.ToString("MMM") to get an abbreviated month.

If you have some other date that you want to get the month string for, after it is loaded into a DateTime object, you can use the same functions off of that object:
dt.ToString("MMMM") to get the full month or dt.ToString("MMM") to get an abbreviated month.

Reference: Custom Date and Time Format Strings

Alternatively, if you need culture specific month names, then you could try these: DateTimeFormatInfo.GetAbbreviatedMonthName Method
DateTimeFormatInfo.GetMonthName Method

If you receive "MMMM" as a response, probably you are getting the month and then converting it to a string of defined format.

DateTime.Now.Month.ToString("MMMM") 

will output "MMMM"

DateTime.Now.ToString("MMMM") 

will output the month name