April 2002
Intermediate to advanced
688 pages
19h 51m
English
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Name
TimeValue Function
Class
Microsoft.VisualBasic.DateAndTime
Syntax
TimeValue(stringtime)-
stringtime(required; String) Any valid string representation of a time
Return Value
A Date containing the time specified by the string argument, with the date set to January 1 of the year 1
Description
Converts a string representation of a time to a Date data type
Rules at a Glance
If
stringtimeis invalid, a runtime error is generated.If
stringtimeisNothing, TimeValue generates an error.stringtimecan be in any time format recognized by the IsDate function. Both 12- and 24-hour clock formats are valid.The Date value returned by time is formatted based on the system’s regional settings.
Programming Tips and Gotchas
A time literal can also be assigned to a Date variable by surrounding the date with hash characters (
#), as the following snippet demonstrates:Dim dMyTime As Date dMyTime = #12:30:00 AM#
The CDate function can also cast a time expression contained within a string as a Date variable, with the additional advantage of being internationally aware.
The string returned by the TimeString property also includes an invalid date, 01/01/0001. It can be eliminated with the Format or FormatDateTime function as follows:
Format(TimeOfDay( ), "Long Time") FormatDateTime(TimeOfDay( ), DateFormat.LongTime)
VB/NET/VB 6 Differences
In VB 6, TimeValue returns the time only. In VB.NET, the function also returns an invalid date, 01/01/0001, along with the time.
See Also
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.