Getting the first instance of the matching string from a string using regular expression (confusing?!)

NLV Raghavendra

16y6.4k.NET

Hello,

Let me explain. I have a string bigstring = 1234abcd4. Now i want to get all the substrings starting with 1 and ending with 4 in the bigstring.

So i wrote this code.

Regex reg = new Regex("1(.*)4");
Match matches = reg.Match(bigstring);
string matchstr = matches.Groups[0].Value;

But i'm always getting 1234abcd4 and i want 1234 which is the first instance that matches. How can we do that?

Any ideas?

Thank you.

3 Replies

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NLV Raghavendra16y ago
Thanks for your reply.

The string i used is an example. It isn't the exact pattern of the string. The string i get is a http response (html) of a page.

I'll get substrings based on html tags. Any ideas?

Thank you.
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Kirtan Patel16y ago
HAPPY NEW YEAR :)

Here is Correct RegEx I have made for your data that will look for all

starting with 1 and ending with 4 strings in bigString

   Regex rex = new Regex("1[0-9]*4");

           //Get First match

            MatchCollection mc = rex.Matches(BigString);

            //Get First Instance of Match

            string Result = mc[0].Value.ToString();

if my answer helps you then check "Do you like this answer" check box please :)
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NLV Raghavendra16y ago
Oops! Posted in a wrong thread. Sorry.
0