How do I extract text that lies between parentheses (round brackets)?

Question

I have a string User name (sales) and I want to extract the text between the brackets, how would I do this?

I suspect sub-string but I can\'t work out

Answer 1

Much similar to @Gustavo Baiocchi Costa but offset is being calculated with another intermediate Substring.

int innerTextStart = input.IndexOf("(") + 1;
int innerTextLength = input.Substring(start).IndexOf(")");
string output = input.Substring(innerTextStart, innerTextLength);