Another of my fairly simple functions (actually written by a colleague of mine, Jonny Anderson) - this time just a simple way to validate a Guid - 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...

private static Regex isGuid = new Regex(@"^({){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}$", RegexOptions.Compiled);

internal static bool IsGuid(string candidate, out Guid output)

{

bool isValid = false;

output=Guid.Empty;

if(candidate!=null)

{

if (isGuid.IsMatch(candidate))

{

output=new Guid(candidate);

isValid = true;

}

}

return isValid;

} ?>