Convert unix time to specific datetime format with culture info

Question

I try to to convert string to specific datetime format.

I have string:

1431075600

and I try convert this by:

private static IFormatProvider culture = new System.Globalization.CultureInfo("en-GB");
model.DeliveryDate = DateTime.Parse(data.DeliveryDate, culture, System.Globalization.DateTimeStyles.AssumeLocal);

I got error message:

String was not recognized as a valid DateTime.

Finally I want to have datetime in format like

Friday, 8 May 2015 hour: 09:00

Answer 1

Your string looks like a Unix Time which is elapsed as a seconds since 1 January 1970 00:00 UTC. . That's why, you can't directly parse it to DateTime . You need to create a unix time first and add this value as a second.

That's why you need to add your string as a second to this value like;

var dt = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
dt = dt.AddSeconds(1431075600).ToLocalTime();

And you can format your string after that with an english-based culture line InvariantCulture ;

Console.WriteLine(dt.ToString("dddd, d MMM yyyy 'h'our: HH:mm",
                              CultureInfo.InvariantCulture));

Result will be;

Friday, 8 May 2015 hour: 09:00

Here a demonstration .