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regular expressionsI have a regular expression that I use on text boxes where I want to
limit the user to letters a-z and spaces. I now need to allow characters such as ö, ä and å (Nordic characters). Does anybody know how to do this in a regular expression? Here is my current standard regular expression : ^[a-zA-Z\s]+$ Any assistance would be really appreciated. Cheers, Mike *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded for it! Mike P <m**@telcoelectronics.co.uk> wrote in
news:e2OmRjTMFHA.732@TK2MSFTNGP12.phx.gbl: Mike,> I have a regular expression that I use on text boxes where I > want to limit the user to letters a-z and spaces. I now need to > allow characters such as ö, ä and å (Nordic characters). Does > anybody know how to do this in a regular expression? Here is my > current standard regular expression : > > ^[a-zA-Z\s]+$ > > Any assistance would be really appreciated. You can add those Nordic characters to the existing character class: ^[a-zA-Zöäå\s]+$ Alternately, you can match all of the characters in a Unicode "block". Nordic characters are part of the "Latin-1 Supplement" block, which are characters in the range of 0080-00FF: ^[a-zA-Z\u0080-\u00FF\s]+$ Unicode code charts can be found here: http://www.unicode.org/charts/ Where Is My Character? http://www.unicode.org/standard/where/ Unicode and Regular Expressions: http://www.unicode.org/unicode/reports/tr18/ I also met with a problem with RegEx.
I want to match such pattern "position:12", and get the substring "12" from the pattern. What I used in C# is: Regex regex = new Regex( "position:(?<num>)" ); However, when I use the statement: string result = match.Groups["num"].Value; in which match is a Match object that is generated by regex.Match(sourceString); what I got is a NULL string. Could anyone explain why? Thanks in advance! "=?Utf-8?B?UnlhbiBMZWFybnMgU2hhcnA=?="
<RyanLearnsSh***@discussions.microsoft.com> wrote in Show quote news:9E9316C3-CE2D-4BA7-89E1-90260BBAC518@microsoft.com: The (?<num>) capture group does not have any character matching > I also met with a problem with RegEx. > > I want to match such pattern "position:12", and get the > substring "12" from the pattern. What I used in C# is: > > Regex regex = new Regex( "position:(?<num>)" ); > > However, when I use the statement: > > string result = match.Groups["num"].Value; > > in which match is a Match object that is generated by > regex.Match(sourceString); what I got is a NULL string. specifiers. If you want it to capture a number after the colon, change it to this: Regex regex = new Regex( "position:(?<num>\d+)" ); Thanks Chris !
You are right and I used "position:(?<num>\\d+)" to get the correct data~ I referred to the MSDN, and learned about Group :) Show quote "Chris R. Timmons" wrote: > "=?Utf-8?B?UnlhbiBMZWFybnMgU2hhcnA=?=" > <RyanLearnsSh***@discussions.microsoft.com> wrote in > news:9E9316C3-CE2D-4BA7-89E1-90260BBAC518@microsoft.com: > > > I also met with a problem with RegEx. > > > > I want to match such pattern "position:12", and get the > > substring "12" from the pattern. What I used in C# is: > > > > Regex regex = new Regex( "position:(?<num>)" ); > > > > However, when I use the statement: > > > > string result = match.Groups["num"].Value; > > > > in which match is a Match object that is generated by > > regex.Match(sourceString); what I got is a NULL string. > > The (?<num>) capture group does not have any character matching > specifiers. If you want it to capture a number after the colon, > change it to this: > > Regex regex = new Regex( "position:(?<num>\d+)" ); > > -- > Hope this helps. > > Chris. > ------------- > C.R. Timmons Consulting, Inc. > http://www.crtimmonsinc.com/ > Mike,
In addition to the other comments. Have you considered "word characters"? the \w escape? ^[\w\s]+$ Which unfortunately includes numbers. You could try the unicode block character classes (based on the \w escape): ^[\p{Ll}\p{Lu}\p{Lt}\p{Lo}\p{Pc}]. \s]+$ \p{Ll} is all lower case leters & not just a-z... Expresso & RegEx Workbench both have wizards of varying degrees to help you build your expression, plus they allow you to test your expressions, also the analyzer/interpreter in each is rather handy. Expresso: http://www.ultrapico.com/Expresso.htm RegEx Workbench: http://www.gotdotnet.com/Community/UserSamples/Details.aspx?SampleGuid=c712f2df-b026-4d58-8961-4ee2729d7322A tutorial & reference on using regular expressions: http://www.regular-expressions.info/ The MSDN's documentation on regular expressions: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpgenref/html/cpconRegularExpressionsLanguageElements.asp Hope this helps Jay Show quote "Mike P" <m**@telcoelectronics.co.uk> wrote in message news:e2OmRjTMFHA.732@TK2MSFTNGP12.phx.gbl... >I have a regular expression that I use on text boxes where I want to > limit the user to letters a-z and spaces. I now need to allow > characters such as ö, ä and å (Nordic characters). Does anybody know > how to do this in a regular expression? Here is my current standard > regular expression : > > ^[a-zA-Z\s]+$ > > Any assistance would be really appreciated. > > > Cheers, > > Mike > > > *** Sent via Developersdex http://www.developersdex.com *** > Don't just participate in USENET...get rewarded for it!  |
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