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18-Sep-2017 16:03

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You can simply enter the text and hit the 'Test and Validate' button.

An unhandled exception was generated during the execution of the current web request.

A GUID is a 16-byte (128-bit) number, typically represented by a 32-character hexadecimal string.

A GUID (in hex form) need not contain any alpha characters, though by chance it probably would.

VIA Scott Galloway's Blog In this implementation you pass in a Guid as an 'out' parameter along with the string you want to test - it then fills in the Guid and returns true / false depending on whether the Guid was valid... Further to my comment, you could change the regex to enforce the use of curly braces. You could pass in an extra parameter to the method to to switch between "must have both braces" or "must not have any braces".

Compiled);public static bool Is Guid(this string input)then create the guid instance as needed, SRP and all that.

The correct regex would have to match all valid guid formats or at least not match any bad guids Also when catching the exception it is best to also catch Overflow Exception (as well as Format Exception).

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It's used extremely often but obviously also a plain chain of 32 hexadecimal digits can be valid.The reason to use UUID(uuid_string) without the version kwarg is so it would work with the other formats UUID allows too like curly braces and urn prefixes.