Date and time at relatime

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How can we get date and time of computer at realtime ?
Means, If someone changes date and time of computer, how can we get the actual date and time in .net 2008 ?

Posted 30-Jan-12 3:59am

mistryshailesh

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3 solutions

Solution 2

try this link..

http://nickstips.wordpress.com/2010/02/12/c-get-nist-internet-time/[^]

Posted 30-Jan-12 4:39am

devbtl

Comments

Manfred Rudolf Bihy 30-Jan-12 11:33am

Sounds reasonable! Have a 5.

Sergey Alexandrovich Kryukov 30-Jan-12 11:49am

Sure, my 5, too.
--SA

Solution 1

I don't know where you are getting problem,

VB

DateTime.Now

will returns the current system datetime.

Thanks
--RA

Posted 30-Jan-12 4:04am

Rajesh Anuhya

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Manfred Rudolf Bihy 30-Jan-12 10:53am

My vote of one:
OP explicitely stated that the correct time needs to be retrieved even if the systems time and/or date was altered:
"If someone changes date and time of computer, how can we get the actual date and time ... "

fjdiewornncalwe 30-Jan-12 11:16am

1 - Exactly the reason why Manfred gave you a one as well. You need to read the question more carefully before answering.

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Manfred Rudolf Bihy · Accepted Answer · 2012-01-30T04:51:00

If the user has the right to change the systems date and time there is no easy solution for you. You could of course try to detect if such a change was made, but that will not help you in correcting it.

Here are two solutions to your problem:

If the computer has access to the internet you can get the correct date and UTC time using a timeserver on the net and the SNTP protocol as proposed in this solution: Simple Network Time (NTP) Protocol Client [^]
The next best thing I could think of is still harder to do and also costlier as it would require bundling a hardware dongle with your software that would include a time keeping mechanism (Calendar & Clock).

Hope that helps,

Manfred