473,326 Members | 2,108 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,326 software developers and data experts.

dates

how to validate a date type
is there a isdate() function in c#
or do i write my own

DaveP
Sep 15 '07 #1
4 1277
DaveP wrote:
how to validate a date type
is there a isdate() function in c#
or do i write my own
What are you looking for ?

A DateTime type is a DateTime type.

Are you looking to test whether a string contains
a valid date according to either standard formats
or a custom format ?

If that is the case try look at DateTime Parse and
ParseExact methods (or TryParse and TryParseExact).

Arne

Sep 15 '07 #2
DaveP wrote:
how to validate a date type
is there a isdate() function in c#
or do i write my own
What date type? DateTime? A DateTime instance is always a valid date
and time, though it may fall outside of some range you require.

Or do you mean you want to validate a string to verify it represents an
actual date? You could use DateTime.TryParse() to do that, though of
course there are a wide variety of strings that a human could recognize
as a date but which would fail to be parsed. Still, using TryParse()
should give you results useful in a computer program. :)

Pete
Sep 15 '07 #3
thats what i used is datetime.parse()
so much in .net....wasn't sure if there was a function out there somewhere

Thank you much
DaveP

"Arne Vajhøj" <ar**@vajhoej.dkwrote in message
news:46***********************@news.sunsite.dk...
DaveP wrote:
>how to validate a date type
is there a isdate() function in c#
or do i write my own

What are you looking for ?

A DateTime type is a DateTime type.

Are you looking to test whether a string contains
a valid date according to either standard formats
or a custom format ?

If that is the case try look at DateTime Parse and
ParseExact methods (or TryParse and TryParseExact).

Arne

Sep 15 '07 #4
DaveP wrote:
thats what i used is datetime.parse()
so much in .net....wasn't sure if there was a function out there somewhere
If you use a non standard format then you may need the Exact variants.

Arne
Sep 16 '07 #5

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

8
by: Riley | last post by:
The date fields being saved by a VB program were being saved as #2003-11-22#. For reasons unknown to me these dates began to be saved as "11/22/2003" All of these dates were made dates with the...
7
by: Alistair | last post by:
diary_date = request.form("diary_date") - (from a populated drop down list) strSQL = "SELECT saz_title, saz_text from saz_details where saz_date =#" & diary_date & "#" a response.write...
5
by: PW | last post by:
<rant> Sorry guys, but I just have to whinge. Dates in ASP are a total pain in the butt! I seem to get caught out so many times. I realise its my own fault, but going from the posts in this...
10
by: Colin Steadman | last post by:
I'm a stupid ASP programmer and I dont do Javascript (except for very simple tasks anyway), and I'm in a bit of a predicament. I've used a javascript table sorting script from here: ...
1
by: Don Sealer | last post by:
I have a report that includes 5 different subreports. I'd like to be able to open this report using a date function (Start Date and End Date). I'd like all five subreports to show the data from...
2
by: Rachel Suddeth | last post by:
Is there a way to have the non-selectable dates (those before MinDate and after MaxDate) draw differently so my users can see right away what dates aren't allowed? I'm not seeing it... ...
12
by: Dixie | last post by:
I am trying to calculate the number of workdays between two dates with regards to holidays as well. I have used Arvin Meyer's code on the Access Web, but as I am in Australia and my date format is...
1
by: pitfour.ferguson | last post by:
My dbase has the start date and end date of each visit. How can I ask Access to list the day of the week of the start (easy), end (easy) and, more importantly, the dates of the visit itself - ie...
7
by: evilcowstare via AccessMonster.com | last post by:
Hi, I have searched the forum for answers on this and to be honest as a novice I find it a bit confusing so apologies if it is simple. There are some searches that I want to apply to my database....
2
by: Jim Carlock | last post by:
(1) Does PHP provide any way to handle dates prior to 1980? I know there's problems with Microsoft Windows NT and all Windows NT operating systems will allow a date prior to 1980 to be placed...
0
by: ryjfgjl | last post by:
ExcelToDatabase: batch import excel into database automatically...
0
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
1
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
1
by: PapaRatzi | last post by:
Hello, I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
1
by: CloudSolutions | last post by:
Introduction: For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...
1
by: Shællîpôpï 09 | last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
0
by: af34tf | last post by:
Hi Guys, I have a domain whose name is BytesLimited.com, and I want to sell it. Does anyone know about platforms that allow me to list my domain in auction for free. Thank you
0
by: Faith0G | last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome former...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.