473,670 Members | 2,636 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Common Regex.IsMatch expressions

Anyone have a link to a list of Regex.IsMatch expressions for commonly used
edits, like phone number, date, ssn, etc. An example below was copied from
a book source, but is returning false on "01/01/2005" in strDate. (Just
starting into regular expressions).

Return (Regex.IsMatch( strDate, "^(0[1-9]|1[0-2])[./-]" + _

' "(0[1-9]|1[0-9]|2[0-9]|3[0-1])" + _

' "[./-](\\d{2}|\\d{4}) $"))

TIA

Dean Slindee
Nov 21 '05 #1
3 10243
Dean,

I know this as the standard given links in these newsgroups.

RegexLib
http://www.regexlib.com/Default.aspx

Expresso
http://www.ultrapico.com/Expresso.htm

I hope this helps a little bit?

Cor
Nov 21 '05 #2
There are too many slashes in the last part (\\d{2}|\\d{4}) $)
It should be (\d{2}|\d{4})$
"Dean Slindee" <sl*****@charte r.net> wrote in message
news:Xn******** *********@fe05. lga...
Anyone have a link to a list of Regex.IsMatch expressions for commonly
used
edits, like phone number, date, ssn, etc. An example below was copied
from
a book source, but is returning false on "01/01/2005" in strDate. (Just
starting into regular expressions).

Return (Regex.IsMatch( strDate, "^(0[1-9]|1[0-2])[./-]" + _

' "(0[1-9]|1[0-9]|2[0-9]|3[0-1])" + _

' "[./-](\\d{2}|\\d{4}) $"))

TIA

Dean Slindee

Nov 21 '05 #3
On 2005-04-20, Dean Slindee <sl*****@charte r.net> wrote:
Anyone have a link to a list of Regex.IsMatch expressions for commonly used
edits, like phone number, date, ssn, etc. An example below was copied from
a book source, but is returning false on "01/01/2005" in strDate. (Just
starting into regular expressions).

Return (Regex.IsMatch( strDate, "^(0[1-9]|1[0-2])[./-]" + _

' "(0[1-9]|1[0-9]|2[0-9]|3[0-1])" + _

' "[./-](\\d{2}|\\d{4}) $"))


As Cor mentioned, Expresso (http://www.ultrapico.com/Expresso.htm) is a
good source of regexes as well as a good app to test them in.

On the above examples, though, a common problem in copying from books
into VB.Net is that a lot of languages force one to escape the backslash
character, while VB.Net does not. In languages like C, you'd type "\\"
when you really want "\".

That's the problem above. Replace "\\d" with "\d" and the regex should
work fine.
Nov 21 '05 #4

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

Similar topics

3
2079
by: Jon Maz | last post by:
Hi All, Am getting frustrated trying to port the following (pretty simple) function to CSharp. The problem is that I'm lousy at Regular Expressions.... //from http://support.microsoft.com/default.aspx?scid=kb;EN-US;246800 function fxnParseIt() { var sInputString = 'asp and database';
8
2978
by: Johnny | last post by:
I need to determine whether a text box contains a value that does not convert to a decimal. If the value does not convert to a decimal, I want to throw a MessageBox to have the user correct the value in the text box. I have the following code but when the user enters a decimal value the Regex.IsMatch catches it (ex. 250.50 should be allowed, but 250.50.0 should not). My code is as follows: if( ! Regex.IsMatch( tboxQtyCounted.Text,...
9
4576
by: Tim Conner | last post by:
Is there a way to write a faster function ? public static bool IsNumber( char Value ) { if (Regex.IsMatch( Value.ToString(), @"^+$" )) { return true; } else return false; }
5
1591
by: Kijak | last post by:
Hi, Im just starting working with REGEX and got a few problems. Could you tell me how to test if two strings can be found in another. ei: String to test: "This is a great car you got" Look for: "great" AND "car" and what about upper case
5
2266
by: Dennis | last post by:
Should not the following return False if s="255xxxxyyy"? It seems to return True. Regex.IsMatch(s, "") -- Dennis in Houston
3
1122
by: Peter Proost | last post by:
Hi group, can the following be done by using a regex, I want a textbox only to contain numbers or . / + - ^ , but I've never used a regex before so I don't know how to go about it. Could I for example check if the typed character is in a given regex. Maybe this is a stupid question, I don't now. grtz Peter
8
1820
by: vbmark | last post by:
I'm new to RegEx in vb.net so I'm not sure how to do this. I want to know if a string contains two minus signs "-". If there are two then I want it to return TRUE. I also need to know if the string contains two plus signs "+". Should this be a seperate RegEx or can one RegEx check for both signs? Thanks!
3
2292
by: ommail | last post by:
Hi I wonder if regular expressions are in general sower than using classes like String and Char when used for validating/parsing text data? I've done some simple test (using IsMatch()) method and the result was that Regex is either as fast or two times slower than method which used methods from classes
8
7620
by: =?Utf-8?B?U2VyZ2V5IFBvYmVyZXpvdnNraXk=?= | last post by:
Hi, I need to validate a textbox to have exactly 4 characters that represent the number 0001 to 9999 (cannot be 0000). The regext I came up with rather long: ^(\d){3} | \d{2}\d | \d\d{2} | \d{3}$ and not easilily extendable should the need arise for say 5 or 6 numbered text.
0
8468
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
8386
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
8814
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
0
7415
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
1
6213
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 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 a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
5683
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
4390
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
2799
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
2
2041
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

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.