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Isdate Function Excel

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Powered by vBulletin Version 4.2.3 Copyright © 2016 vBulletin Solutions, Inc. IsDate should be more precisely named IsDateTime because it returns True for strings formatted as times: IsDate("10:55 AM") --> True IsDate("23:30") --> True 'CDate("23:30") --> 11:30:00 PM' IsDate("1:30:59") --> True 'CDate("1:30:59") Join & Ask a Question Need Help in Real-Time? Both of these strings could be interpreted as a date, so IsDate returns True (regardless of your system date format settings). Source

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Isdate Function Excel

when it really shouldn't since there is no month 16. Connect with top rated Experts 11 Experts available now in Live! Login.

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  • Its results vary based on whether it is passed a string or a number: ?CDate(0.5) --> 12:00:00 PM ?CDate("0.5") --> 12:05:00 AM Trailing and leading zeroes are significant if a number
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If your code needs to determine whether a string can be interpreted as a date, the best solution is to put that string into a cell, and then write code to Advice etc is up to you to persue... So then I think that perhaps VB uses some internal setting for region that may have gotten set wrong with the application of a service pack (or something to that effect). Isdate Function Sql CONTINUE READING Join & Write a Comment Already a member?

Advanced Search VBForums Visual Basic Office Development VBA IsDate function not appearing to work If this is your first visit, be sure to check out the FAQ by clicking the link Vba Check Date Format Advice etc is up to you to persue... This leads to some confusion, because the period can be used as a time separator but not a date separator: IsDate("13.50") --> True 'CDate("13.50") --> 1:50:00 PM' IsDate("12.25") --> True 'CDate("12.25") etc...

Energy Efficient Building Network LLC www.energyefficientbuild.com Reply With Quote Jan 30th, 2003,03:27 AM #4 Aladin Akyurek MrExcel MVP Join Date Feb 2002 Location The Hague, NL Posts 76,972 On 2003-01-29 23:41, Excel Check If Cell Contains Date Only as originally posted - it didn't like it. Posts 5,061 Re: VBA IsDate function not appearing to work Don't mind how it gets there as long as it works. I just posted another question inspired by your answer: Add user-defined function (UDF) to built-in category in Excel. –mwolfe02 Jun 21 '12 at 19:37 Some of the code in

Vba Check Date Format

And ofcourse there are ones with crap data in Just I used to think isdate worked with numbers and dates and strings, but it is not liking it - even when For each cell in cell range.This will have the effect of starting at row 2 and will continue until cellrange + 2So, for example, if you have 8 rows the loop Isdate Function Excel IsDate("29-Feb-01") February 29, 2001 is not a valid date. Excel Vba Istime You really don't want your users calling any function with CopyMemoryoperations and pointer arithmetic.

Usually when using isdate function it tells me whether the string/number sent to it is a date. this contact form Ah ha. I used to put it straight into the recordset field, but when data overflows the db field instead of the usual errors, the recordset seemed to corrupt and had to be Note: locale and language settings affect ' the validity of day- and month names; and partial date strings (eg: '01 January') will ' be parsed with the missing components filled-in with Vba Check If Date Is Valid

I misread that.. Those on the bottom on some sheets (out of 1000+) are formatted to a different date (one with a * next to it). The time now is 11:45 AM. have a peek here Cancel Red Flag SubmittedThank you for helping keep Tek-Tips Forums free from inappropriate posts.The Tek-Tips staff will check this out and take appropriate action.

So the value/text goes into a temporary string variable. Isdate Vb.net Dd/mm/yyyy Privacy Policy Site Map Support Terms of Use Toggle navigation Search Submit San Francisco, CA Brr, it´s cold outside Learn by category LiveConsumer ElectronicsFood & DrinkGamesHealthPersonal FinanceHome & GardenPetsRelationshipsSportsReligion LearnArt CenterCraftsEducationLanguagesPhotographyTest More information is in the code comments.

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Join Date Nov 2000 Location Excel Hell! It should be clear that using IsDate to validate the entry isn't very reliable. Join UsClose Register Help Remember Me? Convert To Date Vba Privacy Statement| Terms of Use| Contact Us| Advertise With Us| CMS by Umbraco| Hosted on Microsoft Azure Feedback on ASP.NET| File Bugs| Support Lifecycle Developer Network Developer Network Developer Sign in

All ' values must still be ±20 years from SysDate. Float matrix left among other matrices I used a solution that I happened to already have on my laptop on an exam. Posts 5,061 Re: VBA IsDate function not appearing to work instance of excel opened, the sheet opened in the instance. http://bookread.org/excel-vba/datevalue-function-returns-value-error.html Each enumerations are SLOW For Each varDate In TestDate If IsDate(varDate) Or IsNumeric(varDate) Then If Not ((dateLast > CVDate(varDate)) And (CVDate(varDate) > dateFirst)) Then IsDateEx = False Exit For End If

B. RE: Problems with Excel VBA function IsDate rmikesmith (TechnicalUser) 26 Aug 02 10:58 Tom,TypeName will tell you the variable type but not what type a worksheet cell's data is.TypeName just returns Let's look at some Excel ISDATE function examples and explore how to use the ISDATE function in Excel VBA code: IsDate("1/3/2004") Result: TRUE IsDate("Tech on the Net") Result: FALSE IsDate("January 3, What format is the cells on the worksheet?

Register now while it's still free! Thanks: Christopher Last edited by crsouser; Dec 23rd, 2009 at 04:37 PM. Cplusplus Reply mbanavige All-Star 152990 Points 13154 Posts ASPInsidersModerator Re: isdate function not working if the date is dd/MM/yyyy format string Jan 27, 2007 09:59 AM|mbanavige|LINK try it like this: Dim Share Share this post on Digg Del.icio.us Technorati Twitter Kind regards PGC To understand recursion, you must understand recursion.

Example: mm/dd/yyyy") End If Next RowCount End With End Sub jdweng Marked as answer by Lo Saeyang Tuesday, May 01, 2012 10:01 PM Tuesday, May 01, 2012 5:53 PM Reply | This documentation is archived and is not being maintained. Taking Control Back as a DM?