Regex.Replace: replace only first one found

Question

Possible Duplicate:
How to Regex search/replace only first occurrence in a string in .NET?

How do I make Regex.Replace replace only the first found pattern?

Obviously marked as a duplicate but did not understand the question. — Justin, Sep 26 '17 at 02:53

score 74 · Accepted Answer · answered Jun 16 '11 at 12:51

74

What about Regex.Replace ( String, String, Int32 ) (MSDN) ?

An example:

Regex rgx = new Regex(pattern);
string result = rgx.Replace(str, replacement, 1); // The 1 makes the difference

answered Jun 16 '11 at 12:51

cimnine

what if you want to provide `count` parameter and `RegexOptions.IgnoreCase` at the same time ? I cannot find any overload that fit. – tigrou Jan 02 '17 at 10:26
2

@tigrou you provide options in the constructor `new Regex(pattern, RegexOptions.IgnoreCase)`, not in the `Replace` function. – grek40 Aug 18 '17 at 14:12

score 4 · Answer 2 · answered Jun 16 '11 at 12:51

4

you can use Regex.Replace(input, replacement, count);

answered Jun 16 '11 at 12:51

kavun

1

You cant. you need an instance because the overloads for the statics methods require a patter also. Sorry This was nothing to do with the question. – Justin Sep 26 '17 at 01:50

2 Answers2