Trim string at first punctuation character excluding white space

Question

I am looking for a way to trim a string at the first instance of a punctuation character that isn't a space.

Thanks

[EDIT] I have tried the following:

var length = input.IndexOf(@"[^\w\s]");

return input.Substring(0, length);

Answer 1

string s = "Hello, world!";
string t = new string(s.TakeWhile(c => !Char.IsPunctuation(c)).ToArray());

Answer 2

You are looking for Char.IsPunctuation . Then just substring to the index.