How to last day of last month??

[nathb]

I am trying to get last day of last month (say today is 02/11/2011 and I need 01/31/2011).

How can I do that in C#

The following code will get last day of any month that user types into TextBoxPeriod.Text. Based on the system date, I need to get last day of last month.


DateTime aSelectedDate = Convert.ToDateTime(TextBoxPeriod.Text);

DateTime datlastDayOfThisMonth = new DateTime(aSelectedDate.Year, aSelectedDate.Month, 1).AddMonths(1).AddDays(-1);

lastDayOfThisMonth = Convert.ToString(datlastDayOfThisMonth);

lastDayOfThisMonth = lastDayOfThisMonth.Substring(0, 10);

Thanks
nath

[techgnome]

Arrrrgh.... you made me think about it...
Did it all in one line. This will get the last day of the month with respect to the current date.

DateTime endOfLastMonth = new DateTime(DateTime.Now.Year, DateTime.Now.Month, 1).AddDays(-1);

It is deceptively simple... get the first of the current month... then subtract one day.

-tg

[techgnome]

BTW: these lines are unnecessary:

lastDayOfThisMonth = Convert.ToString(datlastDayOfThisMonth);

lastDayOfThisMonth = lastDayOfThisMonth.Substring(0, 10);

If you want jsut the day part... use this instead:
enfoLastMonth.Day;
If you need it as a string:
endOfLastMonth.Day.ToString();

it's that simple.

-tg

[motil]

He posted them thread in the ASP.NET forums as well.. (which I had the answer as you tech )
Nath I don't think it's allowed to post the same question in multiple forums..

[techgnome]

motil - if you find a link to the other, report it as a dupe thread and give a link to both... the admins can merge the threadfs and put it in the right place (C#).

-tg

[motil]

np....