<asp:RegularExpressionValidator and RegexOptions.IgnorePatternWhitespace

Question

Is there an easy way of using the RegularExpressionValidator control while ignoring white space?

I can use a custom validator control with Regex and IgnorePatternWhitespace, but it would be good to just have an option in the RegularExpressionValidator control.

Answer 1

Remember that the regular expression validator want to validate with javascript, too, so you want to make sure your expression will work with both the .Net and javascript regex engines. That means that using .IgnorePatterWhitespace isn't the best idea.

Answer 2

Surround your regex with

(?x: )

so "a b c" becomes "(?x:a b c)