c# - how to work with Datetime to create month and year -

i want to create somthing this:

may, 2013
april, 2013
march, 2013
february, 2013
january, 2013
december, 2012
november, 2012

what have written this:

var currentdate = datetime.now; var list = new list<archiveviewmodel>(); (var startdate = new datetime(2013, 1, 1); startdate.month <= currentdate.month; startdate = startdate.addmonths(1)) {     list.add(new archiveviewmodel                 {                     month = startdate.month,                     year = startdate.year,                     formatteddate = startdate.tostring("mmmm, yyyy")                 }); } 

and archiveviewmodel this:

public class archiveviewmodel {     public int month { get; set; }     public int  year { get; set; }      public string  formatteddate { get; set; } } 

however, creates months of specific year (2012 or 2013):

january, 2013 february, 2013 march, 2013 april, 2013 may, 2013 

and if change startdate (2012,1,1) create this:

january, 2012 february, 2012 march, 2012 april, 2012 may, 2012 

but want this:

november,2012 december , 2012 january, 2013 february, 2013 march, 2013 april, 2013 may, 2013 

simply change loop condition from

startdate.month <= currentdate.month 

to

startdate <= currentdate