正则表达式通过将参数视为文本来设置模式

Question

I have an a string that user may set and I would like to use that string inside pattern.

The pattern shall look like this "." + inputStr + "."

Though what if uses has regex specific charaters inside input. Pattern will break wouldnt it?

How can I create a pattern so that regex ignores what is inside inputStr?

Any ideas?

Answer 1

Try:

Regex.Escape(inputStr);

This should escape the string of any characters that would muck with your RegEx (and instead interpret those characters literally).