Question

I tried many syntax in vistal studio, and in this site, but nothing helped.
The expression would be _ct_(anyDigitHere)_
like

 adkasjflasdjfsdf asdfkl sjfdsf _ct150_ asdfasd // so it would match this _ct150

any thing here doens't matter Random stuff..afd a&r9qwr89 ((
_ct415487_ anything here doesn't matter // this will match _ct415487_

basically any _ctAndAnyNumberHere_ (underscore at start and end)
A couple I tried ^*(_ct)(:z)(+_)+*$, ^*(_ct[0-9]+_)+*$. But none helps!

EDIT
Thanks for the reply(ies). That did work, but what I now the problem is replace those matched elements with a hidden field value.. say..

if the value in hidden field is of 1 digit, (any value from 0-9), I have to take last digit from that matched expression and replace it with the value in hidden field.

if the value in hidden field is of 2 digit, (any value from 0-99), I have to take last two digits from that matched expression and replace it with the value in hidden field.

so, basically..

if the value in hidden field is of n digit, I have to take last n digits from that matched expression and replace it with the value in hidden field.

How do I do that?

Answer 1

I don’t know what language of visual studio you’re talking about, but this should work:

_ct\d+_

or this:

_ct([0-9]+)_

EDIT:

Regex rg = new Regex("_ct([0-9]+)_");
string text = "any thing here doens't matter Random stuff..afd a&r9qwr89 ((_ct415487_ anything here doesn't matter";
var match = rg.Match(text).Groups[1].Value;
int sizeHiddenField = HiddenField1.Value.Length;

var newString = text.Replace(match, match.Substring(0, match.Length - sizeHiddenField) + HiddenField1.Value);