Date from javascript to C# is not working

Question

I am trying to pass a datetime from C# to javascript.

I have converted my datetime at C# to FileTime (I am not sure, if this is the way to be done), and after that I passed this value to a ViewBag like this.

    ViewBag.minDate = minDate.ToFileTime();

Next I do this at javascript

    var date = new Date(Date.parse(<%=ViewBag.minDate%>));

Which becomes the following, but I get "Invalid Date"

var date = new Date(Date.parse(130014720000000000)

Do you know why is that, and How I can fix it?

http://stackoverflow.com/questions/2404247/datetime-to-javascript-date — Andreas, Jan 23 '14 at 07:07

anar khalilov · Accepted Answer · 2014-01-23T07:28:42.373

5

Try this:

ViewBag.minDate = minDate.Subtract(new DateTime(1970, 1, 1)).TotalMilliseconds;

edited Jan 23 '14 at 07:28

answered Jan 23 '14 at 07:10

anar khalilov

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Thanks a lot man. Yes, this is what I used :), but forgot to choose as best answer. That solved my problem. Just to learn, and nothing more, why we create a new date 1-1-1970? I know that was the first date at a UNIX , but why we do that? And thanks a lot for helping me – Jim Blum Jan 24 '14 at 08:44
In javascript, "Date objects are based on a time value that is the number of milliseconds since 1 January, 1970 UTC." https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date But in C# there is no such thing. To normalize, we need to subtract this date from C# date. – anar khalilov Jan 24 '14 at 08:47
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You are welcome. In stackoverflow, you learn things pretty fast. – anar khalilov Jan 24 '14 at 09:02

score 2 · Answer 2 · answered Jan 23 '14 at 07:08

2

pass the date like this,

ViewBag.minDate =minDate.ToString("o")

and in your view,

var date = new Date("<%=ViewBag.minDate %>")

answered Jan 23 '14 at 07:08

Mat J

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Can you check the generated javascript in the browser? This should work. – Mat J Jan 23 '14 at 07:25
I was wrong. The invalid date was produced by something else I had wrong. Thanks a lot. Just upvoted :) – Jim Blum Jan 24 '14 at 08:45

score 2 · Answer 3 · answered Jan 23 '14 at 09:04

or just:

ViewBag.SomeDate = DateTime.Now;

and then by using new Date(year, month, day, hours, minutes, seconds, milliseconds):

var date = new Date(<%:ViewBag.SomeDate.Year%>, <%:ViewBag.SomeDate.Month%>, <%:ViewBag.SomeDate.Day%>, <%:ViewBag.SomeDate.Hour%>, <%:ViewBag.SomeDate.Minute%>, <%:ViewBag.SomeDate.Second%>);

score 1 · Answer 4 · answered Jan 23 '14 at 07:09

You may try the following code.

var newDate = new Date(parseInt(ViewBag.minDate.substr(6)));
                    var day = ("0" + newDate.getDate()).slice(-2);
                    var month = ("0" + (newDate.getMonth() + 1)).slice(-2);
                    var date = newDate.getFullYear() + "-" + (month) + "-" + (day);

Date from javascript to C# is not working

4 Answers4