problem in date code

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i need to compare the date of system by the date of selected date in monthcalender in c#
how can i write the code
if (monthCalendar1.SelectionRange.Start.ToString()= DateTime.Now) ;
what is write code to

Posted 19-Nov-12 9:12am

meme_307

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Sergey Alexandrovich Kryukov 19-Nov-12 15:38pm

Looks like not a question. Maybe, incomplete question...
--SA

2 solutions

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Sergey Alexandrovich Kryukov · Answer 1 · 2012-11-28T11:57:00

Compare the dates (or, more generally, points of time in the form of System.DateTime using the operators: "==", ">", "<", ">=" and ">=". Also, use "-" (subtraction) to find the time interval, duration.

C#

System.DateTime before = //...
System.DateTime after = //...

//...

if (before == after) { /* same time */ }
if (after >= before) { /* as expected */ }

//...

if (after < before) { /* something's wrong */ }

System.TimeSpan duration = after - before; // as simple as that! now see how much time elapsed

Please see:
http://msdn.microsoft.com/en-us/library/system.datetime.aspx[^],
http://msdn.microsoft.com/en-us/library/system.timespan.aspx[^].

—SA

Christian Graus · Answer 2 · 2012-11-19T10:26:00

Solution 1

Don't do ToString. why on earth would you ? A string comparison will not correctly compare dates. DateTime.Now is NOW. An hour from how is greater, an hour less is less. Remember that. Apart from that, if you remove the ToString, I bet you're getting a DateTime and this would work.

Posted 19-Nov-12 10:26am

Christian Graus

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meme_307 20-Nov-12 9:55am

thanks * i made date instead of to string and it works good