Return the number of milliseconds since 1970/01/01

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in javascrip

C#

var d = new Date();
var n = d.getTime();

how in c#?

Posted 31-Jul-12 21:31pm

Radzhab

Updated 16-Feb-23 15:33pm

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4 solutions

Solution 1

Hi, You can do like this....

var d = new Date("January 01, 1970");
var n = d.getMilliseconds();

C#

DateTime dt=Convert.ToDateTime("1970/01/01");

long k= dt.Ticks;

Posted 31-Jul-12 21:50pm

Himanshu Yadav

Updated 31-Jul-12 21:56pm

v2

Solution 4

var a = DateTime.Now;
var b = (DateTimeOffset)a;
va milliseconds = b.ToUnixTimeMilliseconds();

Posted 16-Feb-23 15:33pm

Nafisa O`taboyeva

Comments

CHill60 17-Feb-23 5:18am

This does not return the number of milliseconds since 1970/01/01

Richard Deeming 20-Feb-23 6:39am

Actually it does:
DateTimeOffset.ToUnixTimeMilliseconds Method (System) | Microsoft Learn[^]
"Returns the number of milliseconds that have elapsed since 1970-01-01T00:00:00.000Z"

(Although DateTimeOffset.UtcNow would be better than (DateTimeOffset)DateTime.Now.)

It's just a shame this method wasn't supported until almost four years after the question was posted. :)

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Davnor · Accepted Answer · 2012-08-17T06:50:00

The solution posted by OriginalGriff is good, except that the last line should use the TotalMilliseconds property, instead of Milliseconds:

C#

DateTime baseDate = new DateTime(1970, 1, 1);
TimeSpan diff = DateTime.Now - baseDate;
Console.WriteLine(diff.TotalMilliseconds);

The Milliseconds property just gives the milliseconds component of the TimeSpan (the amount left-over after totaling the number of years, days, hours, minutes and seconds), while TotalMilliseconds gives the total number of milliseconds represented by the value.

OriginalGriff · Accepted Answer · 2012-07-31T21:56:00

Solution 2

Try:

C#

DateTime baseDate = new DateTime(1970, 1, 1);
TimeSpan diff = DateTime.Now - baseDate;
Console.WriteLine(diff.Milliseconds);