I am sure that most readers of this site have at one point or another noticed my RegularExpression articles. Well this past week I was looking for a very specific regular expression and thought I would share it with you. The following regular expresion is used to validate a GUID value for user input. You can use this to ensure that product keys and other GUID values that you are using are in the proper format.
^(\{){0,1}[0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12}(\}){0,1}$
I kinda came up with the same, only a little shorter:/^\{?[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\}?$/i
magikMaker, your pattern does not permit uppercase letters A-F. These are legal in GUID values.
Actually, the regex in the comment posted above will work fine, because the author specified that the regex should be case insensitive, meaning that uppercase A-F will match the pattern.
This regex allows unmatched curly braces :/
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