how to compare month-year with DateParse

Question

I have to check if a date (month-year) is minus than actual date.

I know how to do it only with single month or year, like

DateTime.Parse(o.MyDate).Month <= DateTime.Now.Month

or

DateTime.Parse(o.MyDate).Year <= DateTime.Now.Year

but how can I check directly if month-year is minus than now.month-now.year?

EDIT

What I have to do is, for example, to check if 10-2011 (DateTime.Now.Month-DateTime.Now.Year) is between 01-2011 and 04-2012...

Answer 1

If the years are the same, compare the months, if the years are not the same, your year must be smaller than now:

var yourDate = ...;
if((yourDate.Year == DateTime.Now.Year && yourDate.Month < DateTime.Now.Month)
   || yourDate.Year < DateTime.Now.Year)
{
    // yourDate is smaller than todays month.
}

UPDATE:

To check if yourDate is in a certain time range, use this:

var yourDate = ...;
var lowerBoundYear = 2011;
var lowerBoundMonth = 1;
var upperBoundYear = 2012;
var upperBoundMonth = 4;

if(((yourDate.Year == lowerBoundYear && yourDate.Month >= lowerBoundMonth) || 
    yourDate.Year > lowerBoundYear
   ) &&
   ((yourDate.Year == upperBoundYear && yourDate.Month <= upperBoundMonth) ||
    yourDate.Year < lowerBoundYear
   ))
{
    // yourDate is in the time range 01/01/2011 - 30/04/2012
    // if you want yourDate to be in the range 01/02/2011 - 30/04/2012, i.e. 
    // exclusive lower bound, change the >= to >.
    // if you want yourDate to be in the range 01/01/2011 - 31/03/2012, i.e.
    // exclusive upper bound, change the <= to <.
}