I have been looking at regular expressions lately, and I'm hoping that
maybe someone could help me?
I am trying to find the position of a substring, and then returning the
substring including any information that I might want whether it is to the
left or right of that substring.
For example:
//Position of substring has already been determined
string sReturnData = sParseData.Subs tring(iIndexPos ition, iLength);
Is there a way of doing this using regular expressions?
The code above is the equivalent to Visual Basic's Left, I think. (I do not
use VB so this would be a guess for me)
The reason why I want to use regular expressions is because my application
uses a c# scripting engine. It puts out a script file, and I want to allow
the user to change the script if they want to. 3 10323
I can recommend a very inexpensive book that despite the title is the best
work in this context I have ever read, "Teach Yourself Regular Expressions
in 10 Minutes" written by Ben Forta who is a well known Macromedia web
developer.
--
<%= Clinton Gallagher
METROmilwaukee "Regional Information Services"
NET csgallagher AT metromilwaukee. com
URL http://clintongallagher.metromilwaukee.com/
"Tim Soliday" <ti********@yah oo.com> wrote in message
news:Xn******** *************** ***********@207 .46.248.16... I have been looking at regular expressions lately, and I'm hoping that maybe someone could help me?
I am trying to find the position of a substring, and then returning the substring including any information that I might want whether it is to the left or right of that substring.
For example:
//Position of substring has already been determined string sReturnData = sParseData.Subs tring(iIndexPos ition, iLength);
Is there a way of doing this using regular expressions?
The code above is the equivalent to Visual Basic's Left, I think. (I do
not use VB so this would be a guess for me)
The reason why I want to use regular expressions is because my application uses a c# scripting engine. It puts out a script file, and I want to allow the user to change the script if they want to.
Tim Soliday <ti********@yah oo.com> wrote in
news:Xn******** *************** ***********@207 .46.248.16: I have been looking at regular expressions lately, and I'm hoping that maybe someone could help me?
I am trying to find the position of a substring, and then returning the substring including any information that I might want whether it is to the left or right of that substring.
For example:
//Position of substring has already been determined string sReturnData = sParseData.Subs tring(iIndexPos ition, iLength);
Is there a way of doing this using regular expressions?
The code above is the equivalent to Visual Basic's Left, I think. (I do not use VB so this would be a guess for me)
The reason why I want to use regular expressions is because my application uses a c# scripting engine. It puts out a script file, and I want to allow the user to change the script if they want to.
Tim,
The Match class provides all of that information. It has Index and
Length properties for each match. It also has a Result method you
can use to get the text to the right and left of the match:
Match myMatch = Regex.Match("AA BBCC", "BB");
// myMatch.Index = 2, myMatch.Length = 2.
string leftText = myMatch.Result( "$`"); // AA
string rightText = myMatch.Result( "$'"); // CC
--
Hope this helps.
Chris.
-------------
C.R. Timmons Consulting, Inc. http://www.crtimmonsinc.com/
> Tim, The Match class provides all of that information. It has Index and Length properties for each match. It also has a Result method you can use to get the text to the right and left of the match:
Match myMatch = Regex.Match("AA BBCC", "BB");
// myMatch.Index = 2, myMatch.Length = 2.
string leftText = myMatch.Result( "$`"); // AA string rightText = myMatch.Result( "$'"); // CC
Thank you for the help. That is exactly what I am looking for. I tried it
out and it worked perfectly. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: mikea59 |
last post by:
I am getting errors in XMLSpy (Pro) in the following case:
Source Document:
<test> 12345 AB 12345 </test>
Stylesheet:
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
|
by: alphatan |
last post by:
Is there relative source or document for this purpose?
I've searched the index of "Mastering Regular Expression", but cannot
get the useful information for C.
Thanks in advanced.
--
Learning is to improve, but not to prove.
|
by: Tap |
last post by:
I would like to parse the following string with as little code as possible.
stringValue = "Email Message ID:TAPASVI to tapsbin@hotmail.com;tapasbin@cs.com;{CC}tapstemp@hotmail.com;{CC}tapstemp007@hotmail.com"
1) Take everything in between "ID:" and the word " to"
i.e. stringVal1 = "TAPASVI"
2) Take between the word " to " and "{CC}"
i.e. stringVal2 = "tapsbin@hotmail.com;tapasbin@cs.com;"
|
by: Cor |
last post by:
Hi Newsgroup,
I have given an answer in this newsgroup about a "Replace".
There came an answer on that I did not understand, so I have done some
tests.
I got the idea that someone said, that the split method and the
regex.replace method was better than the string.replace method and replace
function. I did not believe that.
|
by: steve |
last post by:
here's the deal...cvs, tick encapsulted data. trying to use regex's to
validate records. here's an example row:
'AD,'BF','132465','06/09/2004','','BNSF','A','TYPE','1278','','BR','2999',''
,'LX','','01','09','1','','','','','','','','','CUSTOM JOB CODE TEST'
record type is in the 8th column ('1278'). using regex b/c there are a
miriad of types that cause other data w/n the record (or related records) to
be in/valid. i'm having problems...
| |
by: Brian Henry |
last post by:
I have phone numbers like this in a data table
123-435-1234
1231231234
432.234.2321
they all have different formatting, what I want to do is get them all
formatted like this
(123) 123-1234
|
by: Mark Chambers |
last post by:
Hi there,
I'm seeking opinions on the use of regular expression searching. Is there
general consensus on whether it's now a best practice to rely on this rather
than rolling your own (string) pattern search functions. Where performance
is an issue you can alway write your own specialized routine of course.
However, for the occasional pattern search where performance isn't an issue,
would most seasoned .NET developers rely on "Regex" and...
|
by: Flomo Togba Kwele |
last post by:
I am having difficulty writing a Regex constructor.
A line has a quote(") at its beginning and its end. I need to strip both characters off. If the
line looks like "1", I need the result to be 1.
If it were sed, I could just do s/^"// and s/"$//, but I'm confused with the quote escape
characters. Also, can I do both replacements at once?
I tried:
|
by: =?Utf-8?B?anAybXNmdA==?= |
last post by:
Two part question:
1. Is Regex more efficient than manually comparing values using Substring?
2. I've never created a Regex expression. How would I use regex to do the
equivalent of what I have coded using Substrings below?
string s = TextBox1.Text.ToUpper();
string ch = s.Substring(0, 1); // read first character
if ((ch == "B") || (ch == "C") || (ch == "X")) {
|
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,...
|
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
| |
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...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
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...
|
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();...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
| |
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| |