Back To Basics: Use Regular Expression Comments

Regular expressions are much easier to understand if you use the following syntax and comment each component of the expression by using a number sign (#). To enable comments, you must also specify RegexOptions.IgnorePatternWhitespace, which means that non-escaped white space is ignored.

Regex regex = new Regex(@"

                        ^           # anchor at the start

                       (?=.*\d)     # must contain at least one numeric character

                       (?=.*[a-z])  # must contain one lowercase character

                       (?=.*[A-Z])  # must contain one uppercase character

                       .{8,10}      # From 8 to 10 characters in length

                       \s           # allows a space

                       $            # anchor at the end",

                       RegexOptions.IgnorePatternWhitespace);

Enjoy,

Rotem