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
I 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 use forum-style tags to let the users format their posts in a limited fashion.Currently I am using Regex to do this.As per this question:How to use C# regular expressions to emulate forum tags. The problem with this,is that the regex does not distinguish between nested tags.Here is a sample of how I implemented this method:
public static string MyExtensionMethod(this string text){return TransformTags(text);} private static string TransformTags(string input) {string regex = @"[([^=]+)[=x22']*(S*?)['x22]*](.+?)[/(1)]"; MatchCollection matches = new Regex(regex).Matches(input); for (int i = 0; i < matches.Count; i++) var tag = matches[i].Groups[1].Value; var optionalValue = matches[i].Groups[2].Value; var content = matches[i].Groups[3].Value; Now,if I submit something like [quote] This user posted [quote] blah [/quote] [/quote] it does not properly detect the nested quote.Instead it takes the first opening quote tag and puts it with the first closing quote tag.Do you guys recommend any solutions?Can the regex be modified to grab nested tags?Maybe I shouldn't use regex for this?
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 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:
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.
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?
I 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...
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.
I 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..
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?
We have a custom set of custom control tags, eg:<ourTag:OurControl runat="server" />Throughout our project we have discovered Visual Studio's marvelous(sarcasm) helper which automatically pastes an ID with the tags name followed by a counter number. I am now trying to remove them globally.
What I'm interested in is a regular expression that will accept HTML input and remove all attributes inside the tag while leaving the tag intact. For example I want this...
<p class="test" id="TestParagraph">This is some test text right here.</p>
<div id="mydiv">This is a "div" with quotation marks</div>
I want to use regular expressions to return the following:
<div id='mydiv'>This is a "div" with quotation marks</div>
Notice how the id attribute in the div is now surrounded by apostrophes?
How can I do this with a regular expression?
Edit: I'm not looking for a magic bullet to handle every edge case in every situation. We should all be weary of using regex to parse HTML but, in this particular case and for my particular need, regex IS the solution.
Edit #2: Jens Ameskamp helped to find a solution for me but anyone randomly coming to this page should think long and very hard about using this solution. In my case it works because I am very confident of the type of strings that I'll be dealing with. I know the dangers and the risks and make sure you do to. If you're not sure if you know then it probably indicates that you don't know and shouldn't use this method.
I have a ListBox that contains userNames which is inputted by a user during run time. This number of items in the ListBox is dependent on the user's input. These userNames will then be used in a Lambda expression like this:
var vHandleResult = vHandleResult.Where(a => a.UserName.Contains("userName"));
This works fine when there is only 1 user in the ListBox but doesn't produce the correct results when there are multiple items in the listBox. I tried manually creating the expression which should be written as this:
I tried forming the "a.UserName.Contains("userName") expression as a string which is dependent on the number of the items (using foreach) and then just plug in the resulting string in the expression but it seems that it doesnt accept string as an expression.
I'm bulding document-from-template engine. At certain points I need to match on Reg Exp groups and replace template text with content from a db.
I 'hardcoded' my RegExp initially, doing something like: Regex r = new Regex(@"{DocSectionToggle::(?<ColumnName>w+)::(?<ResponseValue>.+)}[[(?<SectionContent>.+)]]", RegexOptions.Multiline);
it does group capture, so the syntax isn't the prettiest.
Just to make things neater and because I want' to keep the patterns in web.config or elsewhere, I've 'evolved' algorithm to something like:
[code]...
But I'm getting an error: 'Input string was not in correct format'.
I Have a specific set of HTTP response headers I'm trying to recreate in ASP.NET. Here is how it looks in Fiddler (Raw):
HTTP/1.1 200 OK Content-Length: 570746 Content-Type: audio/wav Last-Modified: Wed, 19 May 2010 00:44:38 GMT Accept-Ranges: bytes ETag: "379d676ecf6ca1:3178" Server: Microsoft-IIS/6.0 X-Powered-By: ASP.NET Date: Tue, 05 Oct 2010 18:35:18 GMT
Here is how it looks on the Headers tab (same data. Different view)
I am trying to recreate the same set of headers (different values of course) with code, on an ASP.NET page. The biggest problem is with the cache settings and the ETag. It usually shows some "private" or similar cache setting and no ETag value, even though I'm trying to set it explicitly with
I'm trying to emulate an Ajax CalendarExtender to match an existing ASP:Calendar using CSS. Here are the properties (not in CSS but on the actual .aspx) of the regular ASP:Calendar:
