i have text like this

aaa111
bbb222
ccc333
ddd444

and i need to match with Regular Expression from specified character to second new line
for example from bbb return like this :

bbb222
ccc333

i used this code but not work fine

Match match = Regex.Match(nums, @"\bbbb\w*\b");

CodePudding user response：

Submitting my comment to answer so that solution is easy to find for future visitors.

You may use this regex:

\bbbb(?:.*\r?\n){2}

RegEx Demo

RegEx Breakup:

• \b: Word boundary
• bbb: Match bbb
• (?:.*\r?\n){2}: Match any text followed by a line break. Repeat this group 2 times

CodePudding user response：

If your data is well constrained, you can use

^bbb\d{3}\s\w{3}\d{3}$

An explanation