how to compare month-year with DateParse
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 <.
}
var date = DateTime.Parse(o.MyDate);
var year = date.Year;
// We don't even want to know what could happen at 31 Dec 23.59.59 :-)
var currentTime = DateTime.Now;
var currentYear = currentTime.Year;
bool result = year < currentYear ||
(year == currentYear &&
date.Month <= currentTime.Month)
Second option:
var date = DateTime.Parse(o.MyDate).Date; // We round to the day
date = date.AddDays(-date.Day); // and we remove the day
var currentDate = DateTime.Now.Date;
currentDate = currentDate.AddDays(-currentDate.Day);
bool result = date <= currentDate;
Third option (more "old school" perhaps)
var date = DateTime.Parse(o.MyDate);
var currentTime = DateTime.Now;
// Each year can be subdivided in 12 parts (the months)
bool result = date.Year * 12 + date.Month <= currentTime.Year * 12 + currentTime.Month;