The method creates a version 4 Universally Unique Identifier (UUID) as described in RFC 4122, section 4.4. The returned Guid is guaranteed not to be equal to Guid.Empty.

The optional format parameter can be “N”, “D”, “B”, “P” or “X”.

• N: 32 digits
• D: 32 digits separated by hyphens, this is the default value
• B: 32 digits separated by hyphens, enclosed in braces
• P: 32 digits separated by hyphens, enclosed in parentheses
• X: Four hexadecimal values enclosed in parentheses, where the fourth value is a subset of eight hexadecimal values that are also enclosed in parentheses

UUIDGen('format-Parameter')

UUIDGen()

Delivers e.g.: 04bfda47-7c60-4a27-9fc8-8b0b1cc9b2a1

UUIDGen('N')

Delivers e.g.: 758b399e7271438aa1d23ebccdb19086