如何在 c# 中将 integer 时间戳转换为 DateTime

Question

I have a database file containing timestamp like "388740254860721408". Unfortunately, I don't have a lot of documentation for the format. So I'm not sure how the timestamp is formatted. How do I convert this number to a datetime?

Answer 1

Is this timestamp an actual value you found in the file? The first thing that came to mind is UNIX timestamp. Either in milliseconds or in seconds. For that big of a number I'd go with milliseconds, but It's invalid.

If in fact the UNIX milliseconds format is used to display this, the proper code for this is:

var time = DateTimeOffset.FromUnixTimeMilliseconds(yourValue);