Case insensitive Regex without using RegexOptions enumeration

Is it possible to do a case insensitive match in C# using the Regex class without setting the RegexOptions.IgnoreCase flag?

What I would like to be able to do is within the regex itself define whether or not I want the match operation to be done in a case insensitive manner.

I would like this regex, taylor, to match on the following values:

• Taylor
• taylor
• taYloR