Question

I want a regex for below strings.

string: Some () Text (1)
I want to capture 'Some () Text' and '1'

string: Any () Text
I want to capture 'Any () Text' and '0'

I came up with the following regex to capture ‘text’ and ‘count’ but it does not match the 2nd ex above.

@"(?<text>.+)\((?<count>\d+)\)

c#:

string pattern = @"(?<text>.+)\((?<count>\d+)\)";
Match m = Regex.Match(line, pattern);
count = 0;
text = "";
if (m.Success)
{
    text = m.Groups["text"].Value.Trim();
    int.TryParse(m.Groups["count"].Value, out count);
}

Answer 1

Just make the group optional:

string pattern = @"^(?<text>.+?)(\((?<count>\d+)\))?$";
Match m = Regex.Match(line, pattern);
count = 0;
text = "";
if (m.Success)
{
    text = m.Groups["text"].Value.Trim();

    if(m.Groups["count"].Success) {
        int.TryParse(m.Groups["count"].Value, out count);
    }
}