regex for special characters code example
Example 1: regex replace all special characters
Regex.Replace(your String, @"[^0-9a-zA-Z]+", "")
Example 2: regex match numbers and special characters
echo %H1E2L+L#O! | sed 's/[^A-Z!]//g' #replaces number and special
characters which aren't ! or an uppercase letter A-Z