Re: java Date to c# ticks

From:
=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>
Newsgroups:
comp.lang.java.programmer
Date:
Tue, 02 Mar 2010 21:00:15 -0500
Message-ID:
<4b8dc2ae$0$279$14726298@news.sunsite.dk>
On 02-03-2010 20:56, Roedy Green wrote:

On Tue, 2 Mar 2010 20:09:39 +1300, "Peter K"<peter@parcelvej.dk>
wrote, quoted or indirectly quoted someone who said :

Now I am writing a java application, which collects data and writes it to
the database for the c# application to read. So how do I convert a java
"Date" to a value which the c# application can interpret as "ticks"?


  There are so many definitions of "ticks".

AT ticks were in the neighbourhood of 20 ms.

Dates are just a wrapper around a long ms since 1970-01-01

You might have a look at the code in FileTimes
http://mindprod.com/products.html#FILETIMES
which interconverts between Java-ticks and MS file timestamp ticks.

Java timestamps use 64-bit milliseconds since 1970 GMT. Windows
timestamps use 64-bit value representing the
number of 100-nanosecond intervals since January 1, 1601, with ten
thousand times as much precision.


There are many definitions of ticks, but the original poster
did say C# and in that case he must mean System.DateTime.Ticks
and that is year 0001 based not 1601 based.

Arne

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