I need to use regular expressions in C# to validate a TextBox.
Regular expressions should NOT allowed
more that ONE space between words, considering also beginning and end of the string
UPDATE
I NEED to add this role in ValidationExpress for a Validation Control in ASP.NET
if there are two consecutive apostrophe or two consecutive hyphens or two consecutive comma or two consecutive spaces or two consecutive periods or two consecutive periods..I want to display those particular error.
and One more thing is if there are any of the above combinations like apostrophe+hyphen or apostrophe+space or hyphen+space, I want to throw that specific error.
i take the text of the html of a site and want to select a substring of the whole text. the text is something like this
[Code]....
I think it can be solved by Regular expressions but maby I'm wrong.
I upload a .html file which is saved from a webbrowser. I read the stream and with Stringbuilder I make a string of it.But now I want to have only the data which is in this div:
[Code]....
I have two the below regular expressions for a textbox , to validate.
^(([01]?dd?|2[0-4]d|25[0-5]).){3}([01]?dd?|25[0-5]|2[0-4]d)$ - Validation Expression For IP Address
^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9]).)*([A-Za-z]|[A-Za-z][A-Za-z0-9-]*[A-Za-z0-9])$ - Validation Expression for Host name
I want to use both these for the same textbox, It should fullfill either of these conditions. What should I do so as to satisfy my condition.
[Code]....
View 1 RepliesAs I have the URLs like
http://somedomain.com/products.aspx?id=1
and i want to rewrite this like
somedomain.com/productname and rest of the URLs on the domain work as they are provided.
like
somedomain.com/forums/categories.aspx
I don't want to rewrite these other URLs
How I can Replace charachter '+' Instead of Space between this words or sentencefor Example :
Before = I like ASP.NET
After = I+like+ASP.NET
I am trying to search titles in this pattern a text. the titles are unknown and sometimes it contains special characters '(' and ')'.... when this is happens the only way to make the match correct is by replace ')' by ')' . is there a way ignoring this replacment? and if not, what are the complete meta(special) characters?
View 1 RepliesI want a limited amount of html tags for the user to be able to put in my form and by looking at the posts, regular expressions seem to be the way forward. I don't want to use javascript or 3rd party as this is for an assignment at university.
The examples I have found seem to be set out differently than mine with using asp id identifiers whereas my code below is set out differently so I am unsure if I can use these examples.
I am building a forum and I want to be able to use simple square bracket tags to allow users to format text. I am currently accomplishing this by parsing the string and looking for the tags. It's very tedious, especially when I run into a tag like this [URL]. Having to parse the attribute, and the value, and make sure it has proper opening and closing tags is kind of a pain and seems silly. I know how powerful regular expressions are but I'm not good at them and they frustrate me to no end. I think an example would get me started. Just a regex for finding tags like [b]bolded text[/b] and tags with attributes like the link
View 2 RepliesI applied regular expression validator on date of birth and Missing date for a missing person. the missing date should be greater than the date of birth . I applied compare vallidator but it is not working properly. it comparing day of date of birth with day of missing date, both months and years...
if i give...
date of birth: 2/2/1980
Missing date: 1/2/1981
it is giving the error message...
I applied this regular expression:
^((0?[13578]|10|12)(-|/)(([1-9])|(0[1-9])|([12])([0-9]?)|(3[01]?))(-|/)((19)([2-9])(d{1})|(20)([01])(d{1})|([8901])(d{1}))|(0?[2469]|11)(-|/)(([1-9])|(0[1-9])|([12])([0-9]?)|(3[0]?))(-|/)((19)([2-9])(d{1})|(20)([01])(d{1})|([8901])(d{1})))$
I am getting ready to just write my own, but I have a need for some regular expressions that will validate strings to make sure they are in an acceptable format to be inserted/updated into a database field. I figure it may just be to find a list of them someone has already posted somewhere and just use those.
View 3 RepliesI have a website created in asp.net and have the following fields displayed in the grid view linked through a database.First_Name Last_name City Username Password Email Mobile Genderplease let me how I can put validations when the edit button is clicked and the textboxs popout...I have tried a lot of ways like edit template and all but they have not been helpfulReallyIf you need I can also post the code I am using..
View 1 RepliesCode to read the span having the particular class name and assign to match collection.
I am having a set of html tags.
<span><a href="asb.aspx">Dummy</a></span>
<span class="active"><a href="abc.aspx">Hi thi is titile</a></span>
I need to get the span having the class name ="active".That is i need the result
<span class="active"><a href="abc.aspx">Hi thi is titile</a></span>
It will be fine if i get the text in the a tag that is with in the span having the class name "active".
I am trying to find a way to limit the inputs on a webpage to a variety of different sequences, and although I have worked through the regular expression library, I am still confused on how to allow decimal places and a maximum value. I initially used rangevalidators, but as you know, these only limit the inputs to a range, and have no control over the decimal places entered. A variety of limits i have been asked to implement are:
1. Range 0-45, 0 decimal places
2. Range 0-20, 2 decimal places
3. Range 16-65, 0 decimal places
4. Range 0-99, 2 decimal places
5. Range 0-1500000, 0 decimal places
6 Range 0-200, 1 decimal place
For 1 and 5 respectively, I have used
([0-9]|[0-9]d|45)$
([0-9]|[0-9]d|1500000)$
but want to be sure that I have understood the pattern correctly. How do I then go about creating a pattern for the other examples?
How can I stop a user from entering more than one space in between words in a forum post title?
View 4 RepliesI'm trying to get a regular expression working that will match specific whole words.
So far I've got keyword which is nearly perfect, however, it's not quite working as I would like.
[Code]....So the problem here is that in the sentence the word example has a # in front of it and so shouldn't be matched but it is.
Is there a way to modify this regular expression so that it won't match but if I do search for "#example" it will.
I have a regular expression
^[a-zA-Z+#-.0-9]{1,5}$
which validates that the word contains alpha-numeric characters and few special characters and length should not be more than 5 characters.
How do I make this regular expression to accept a maximum of five words matching the above regular expression.
In the "Regular Expression Editor" dialog in VS 2008 ( or 2005 for this matter ) ,
there is a list of "standard expressions" like :
"French phone number" , "French postal code" etc..
And of course there is an option to select a "Custom" and then enter your own regular expression.
Well.. I want to add a predefined expressions to that list . Like : "Israeli phone number" .
I don't want to enter it every time by selecting a custom value .
I want my developers in the team available items for them to choose.
Anyone knows how to alter that list ?
I've found some question about it on the web - and the answer given is that it's not possible .
I am writing a Regular Expression in IIS Rewrite Module 2.0. I would like to check for 3 words if this is true then i have a redirect action in place.
My Reg Ex is :-
^(?=.*?http)(?=.*?SomeWord1)(?=.*?SomeWord2).*$
When i run a test and i put in my string it matches but it doesn't appear to work in the browser?
how i can match 3 word :- Http , SomeWord1 , SomeWord2
I have googled but i can't seem to find anything that works.
[RegularExpression(@"S*[a-zs]S*s*", ErrorMessage = "Please add
category name letters only")]
This works fine if I input some words something like this...test test. But if I try to do this... test test test, I will get the ErrorMessage that I implemented. The thing is that I don't know how many words are going to put in by the end user. Is there a way where unlimted whitespaces could put in place? I am using VS2010
What is a good regular expression that will allow only characters with the space?
View 5 RepliesI use asp.net 4 and c#.
I need to use a WebControl of type Validation namely RegularExpressionValidator to detect data inputed in a TextBox that IS NOT in format yyyy-MM-dd (String).
how to write the RegEx to apply ot this control?
I would like to have an regular expression that does not allow any spaces(before,within,after the word) and alphanumeric characters.
View 3 Replies