Post dates web api custom format

Question

This is a nightmare (at least I can’t find an easy way), I have searched for hours and really can’t find my solution.

How do you handle dates in a custom format in web api? I need DD/MM/YYYY format

I can’t post my dates since my api wants them to be in the default format MM/DD/YY, one solution would be to parse all my dates via JavaScript to the format my api needs it, but for real? Isn’t it a cleaner way?

How can I make my api knows my format?

I found this post, and it says it does not work for posting. And no solution yet.

Am I in the wrong way? Too many up votes for the question, and not even a good answer!

Why not use a string and format it to whatever format you want? yourDate.ToString("dd/MM/yyyy") should do it. — Gjohn
– Gjohn, Commented Feb 25, 2014 at 2:53

Maxim Nikonov · Accepted Answer · 2014-02-27 10:04:18Z

By default, as JSON formatter, in Web.Api, used Json.NET serializer. Json.NET writes dates in ISO 8601 format. Dates in UTC are written with a "Z" suffix. Dates in local time include a time-zone offset. For example:

2012-07-27T18:51:45.53403Z         // UTC
2012-07-27T11:51:45.53403-07:00    // Local

You can override serrializer date time settings by setting the DateFormatString property in web api configuration section:

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
        config.Formatters.JsonFormatter.SerializerSettings.DateFormatString = "yyyy-MM-dd";
    }
}

Also, probably, you will need to change thread culture settings in Global.asax

protected void Application_BeginRequest(object sender, EventArgs e)
{            
    var newCulture = (CultureInfo)Thread.CurrentThread.CurrentCulture.Clone();
    newCulture.DateTimeFormat.ShortDatePattern = "yyyy-MM-dd";
    newCulture.DateTimeFormat.ShortTimePattern = "HH:mm";
    newCulture.DateTimeFormat.LongTimePattern = "HH:mm:ss";
    newCulture.DateTimeFormat.DateSeparator = "-";
    Thread.CurrentThread.CurrentCulture = newCulture;
}

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