Remove specific words from a string (case insensitive)

Question

I get job contents that contain many word that I want to 'remove/replace' from the content. Example:

postcodes,Thank you , Click here 

Problem

I have a list of words I want to remove from the content, but I am not sure how the words will appear within the content (upper case/lower case)...

So, how do I replace them?

Example - I want to replace:

associate degree in electronics or applicable equivalent

But in the content it can be :

associate Degree in electronics or applicable equivalent
Associate DEGREE in electronics or applicable equivalent
ASSOCIATE DEGREE IN ELECTRONICS or applicable equivalent

How can I replace them?

Answer 1

Try this:

(?i)(associate DEGREE in ELECtronics)

Answer 2

If you want to use Regex one possible solution will be:

Regex.Replace(input, @"(?i)(associate\s+degree\s+in\s+electronics\s+or\s+applicable\s+equivalent)", String.Empty);

You can use the same patter but create a Regex object, so you can provide a RegexOptions like:

Regex r = new Regex(@"(?i)(associate\s+degree\s+in\s+electronics\s+or\s+applicable\s+equivalent)", RegexOptions.Compiled);

and later on you can use it as:

r.Replace(input, String.Empty);

Note: using a concrete Regex object gives you advantage of more flexible Replacement strategies, like MatchEvaluator, number of replacements as a count, etc...