How to remove an string object from a list?

Question

I have 2 list of String Header1 and Header2

List<String> Header1 = new List<String>();
Header1.add("String1");
Header1.add("String2");
Header1.add("String3");
Header1.add("String4");

and

    List<String> Header2 = new List<String>();
    Header2.add("STRING1");
    Header2.add("STRING2");

I would like to remove these entries "String1" and "String2" in Header2 from Header1 by ignoring the case sensitivity.

Any idea how to do it either using LINQ or string operation as well.

Thanks

Answer 1

Header1.RemoveAll(x => 
            Header2.Contains(x, StringComparer.CurrentCultureIgnoreCase));