Make regular expression case insensitive in ASP.NET RegularExpressionValidator

Question

Given this regular expression: \"^[0-9]*\\s*(lbs|kg|kgs)$\" how do I make it case insensitive? I am trying to use this in a .net regular expression validator,

Answer 1

Use RegEx Options.

Regex regExInsensitive = new Regex(@"^[0-9]\s(lbs|kg|kgs)$", RegexOptions.IgnoreCase);

In other languages you can usually specify a RegEx modifier after the end of the Reg Ex; the 'case insensitive' modifier is 'i':

In Perl:

if($var =~ /^[0-9]\s(lbs|kg|kgs)$/i) { # the /i means case insensitive
    # ...
}

In PHP:

if(preg_match("/^[0-9]\s(lbs|kg|kgs)$/i", $var)) {
    // ...
}