MS Outlook 日历文件中的 UTC 时间不正确

Question

In my application of event management, i create a calendar file which is sent with the registration confirmation email. The application is in .NET with C#. I use following code to get the time.

sdate = row1.StartTime.ToUniversalTime().ToString("yyyyMMddThhmmssZ");
    edate = row1.EndTime.ToUniversalTime().ToString("yyyyMMddThhmmssZ");
    ...

and then i add it to calendar file

contents.Add("DTSTART:" + sdate);
    contents.Add("DTEND:" + edate);

But the problem is that if my end time is 3:59 PM local time then it coverts correctly. But if it ends at 4:00 PM then end time becomes incorrect.

Can anybody guide me?

Please find below the Screens of Outlook Calendar Entry and Calendar File data.

Correct Output

Incorrect Output

Answer 1

I finally found the solution. It is such a simple one that its disappointing that I missed it.

Just to help others. I just need to put capital 'H' in the string format when converting to string. So the correct code is

sdate = row1.StartTime.ToUniversalTime().ToString("yyyyMMddTHHmmssZ");
edate = row1.EndTime.ToUniversalTime().ToString("yyyyMMddTHHmmssZ");