c# - Regex to get NUMBER only from String -

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i recieve "7+" or "5+" or "+5" xml , wants extract number string using regex. e.g regex.match() function

        stringthathavecharacters = stringthathavecharacters.trim();         match m = regex.match(stringthathavecharacters, "what use here");         int number = convert.toint32(m.value);         return number;

\d+

\d represents digit, + 1 or more. if want catch negative numbers can use -?\d+.

note string, should represented in c# "\\d+", or @"\d+"


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