parsing “*” - Quantifier {x,y} following nothing

Question

fails when I try Regex.Replace() method. how can i fix it?

Replace.Method (String, String, MatchEvaluator, RegexOptions)

I tr

Answer 1

You appear to have a lone "*" in your regex. That is not correct. A "*" does not mean "anything" (like in a file spec), but "the previous can be repeated 0 or more times".

If you want "anything" you have to write ".*". The "." means "any single character", which will then be repeated.

Edit: The same would happen if you use other quantifiers by their own: "+", "?" or "{n,m}" (where n and m are numbers that specify lower and upper limit).

• "*" is identical to "{0,}",
• "+" is identical to "{1,}",
• "?" is identical to "{0,1}"

which might explain the text or the error message you get.