Multiple regex options with C# Regex

Question

Assume I have this:

Regex.Replace(\"aa cc bbbb\",\"aa cc\",\"\",RegexOptions.IgnoreCase);

But I also need to ignore white-spaces. So, I fo

Answer 1

Regex.Replace("aa cc bbbb","aa cc","",RegexOptions.IgnoreCase | RegexOptions.IgnorePatterWhitespace);

Use the | operator.

Edit :

You got it completely wrong. RegexOption.IgnorePatterWhitespace ignores the whitespace in the regex so that you can do :

string pattern = @"
^                # Beginning of The Line
\d+              # Match one to n number but at least one..
";

You however think that ingoring whitespace makes "aa cc bbbb" into "aaccbbbb" which is thankfully wrong.