Btukfyl

I have a check i run on the server and on a desktop application but the result is not consistent.

This is the code on the server to add a timestamp to a string which i send back to the desktop app. So that the returned string expires after some time and cannot be used as it is encrypted.

Server:

Double unixTimestamp = (double)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;

DateTime TodayDate = UnixTimeStampToDateTime(unixTimestamp);

Desktop App:

//li.tStamp this comes from the server



DateTime time = UnixTimeStampToDateTime(Convert.ToDouble(li.tStamp));

Double unixTimestamp = (double)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;

DateTime time2 = UnixTimeStampToDateTime(unixTimestamp);

The condition:

double SecondsDifference = time2.Subtract(time).TotalSeconds;

if (SecondsDifference > 0 && SecondsDifference < 30)

{

    // DO SOMETHING HERE

}

The thing is the result is not consistent it works on some pc an not on another what am I doing wrong here?

public static DateTime UnixTimeStampToDateTime(double unixTimeStamp)

{

    // Unix timestamp is seconds past epoch

    System.DateTime dtDateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, System.DateTimeKind.Utc);

    dtDateTime = dtDateTime.AddSeconds(unixTimeStamp).ToLocalTime();

    return dtDateTime;

}