Determines whether the search for a pattern string is case-sensitive.
By default, regular expression searches are case-sensitive;
that is, the default value of the IgnoreCase property is
False. If you don’t want the search to be
case-sensitive, you must set the IgnoreCase property to
If your search string does not attempt to match any alphabetic characters (A-Z and a-z), you can safely ignore the setting of IgnoreCase, since it won’t affect the results of your search.