Time

jhilden · February 15th, 2009, 08:31 PM

My goal is to obtain two times from a user and calculate the difference between those two.

The format I want to use is: 00:00.00 => 01:48.4 (1 minute and 48.4 seconds.)

What is the code for this simple calculation and what are the variable declarations?

Thanks to any who can help me.

I submitted this in the beginners section but appears to be dead in there

Old Pedant · February 16th, 2009, 12:54 AM

http://msdn.microsoft.com/en-us/libr....datetime.aspx
http://msdn.microsoft.com/en-us/libr....timespan.aspx
http://msdn.microsoft.com/en-us/libr....tostring.aspx

Code:

Dim t1 As DateTime = CDate( someTextBox.Text ) ' can also use DateTime.Parse...
Dim t2 As DateTime = CDate( anotherTextBox.Text ) ' but why not use what VB gives you?
Dim span As TimeSpan = t2.Subtract( t1 )

Dim duration As String = span.Days.ToString("00") & "." & _
                         span.Hours.ToString("00") & ":" & _              
                         span.Minutes.ToString("00") & ":" & _              
                         span.Seconds.ToString("00") & "." & _
                         (span.Milliseconds/100).ToString("0")

When in doubt, check with MSDN.

N.B.: If didn't want those tenths of a second, we could do it simpler with all-VB built-in functions.