只有在c＃中的单词开头找到才能替换字母

Question

I couldn't find a definite answer to this so I am posting a question.

I would like to add some bbcode to letters in every word in my string but only when the letter is found at the start of a string. It should add to both upper and lower case letters at start of words.

For example it would replace:

string s = "Alan ate an apple";

With:

[bbcode]A[/bbcode]lan [bbcode]a[/bbcode]te [bbcode]a[/bbcode]n [bbcode]a[/bbcode]pple

cant' figure out how to achieve this :/

Answer 1

Search regex:

(\b[Aa])

Replace by:

[bbcode]$1[/bbcode]

RegEx Demo

Here search regex is: (\\b[Aa]) which is matching letter a or A only after a word boundary \\b thus matching only the first letter of a word.