Question

This is the string: “-random text- $0.15 USD”

What I want to extract is the “0.15” behind, excluding the $ and USD. So the text will only contain “0.15” with all other words gone.

How do I go about doing this?

Thanks in advance 🙂

Answer 1

Using regexes

string str = "-random text- $0.15 USD";

Regex rx = new Regex(@"(?<=\$)[0-9]+\.[0-9]+(?= USD$)");
var res = rx.Match(str);

if (res.Success) {
    var res2 = res.ToString();
}

The “main” part is [0-9]+\.[0-9]+ (one or more digits followed by a . followed by one or more digits). This expression must follow a $ sign (?<=\$) and must be followed by USD (there is a space before USD) plus end of string (?= USD$).

Online test: http://regexr.com?30aot