Join Date and Time to DateTime in C#

Question

I am retrieving data from an iSeries where there is a separate date and time fields. I want to join them into a DateTime field in my C# project. I don't see a way to add just a time to a DateTime field. How would you suggest accomplishing this?

Answer 1

You can do this quite easily:

DateTime dateOnly;
DateTime timeOnly;
...
DateTime combined = dateOnly.Date.Add(timeOnly.TimeOfDay);

TimeOfDay returns a TimeSpan, which you then add to the date.

Edit (thanks to commenters below) - to be safe, use dateOnly.Date to ensure the date part only.

Answer 2

How are they being stored? Assuming that the date portion is being stored as a DateTime of midnight of the day in question and the time is a TimeSpan, you can just add them.

DateTime date = ...;
TimeSpan time = ...;

DateTime result = date + time;

Answer 3

You could easily construct a TimeSpan from your "time" field.

Once you have that, just do:

TimeSpan time = GetTimeFieldData();
dateField = dateField.Add(time);

Answer 4

Datetime date = new DateTime(Date1.Year, Date1.Month, Date1.Day, Time1.Hour, Time1.Minute, Time1.Second);