Question

I was trying to read IE cookie file using C#

I am stuck with how to read the datetime inside the file.

They divide the datetime into 2 lines like this

481435648

30298937

or

1100239232

30151908

I have tried all methods to convert this to readable date time but I failed. I have read about FileTime, nanoseconds and ticks, and none of those got me on the right path.

Answer 1

According to this post there is only one field for expiration date (the second one could be the cookie value ? )and to read it, you can use something like

DateTime expires = new DateTime(1970, 1,1).AddSeconds(secondsFromCookie);
Console.WriteLine(expires);

The above is applicable only for netscape cookie file format.
For IE use

        int eLow = 481435648;
        int eHigh = 30298937;
        double seconds = 1e-7*(eHigh*Math.Pow(2, 32) + eLow) - 11644473600;
        DateTime expires = new DateTime(1970, 1, 1).AddSeconds(seconds);

Source of the formula