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This is particularly true of data like phone numbers, which are typically private data used to deliver both application functionality, such as messaging, and security features like 2-factor authentication. NET Core provide data validation capabilities to make it easier to handle standard data types more robustly. NET frameworks provide for validating phone numbers, the capabilities are limited, particularly with respect to internationalization (“i18n”).
Although both approaches will work identically in the vast majority of cases, the derived class format does make your code more complex behind the scenes and provide a path for introducing bugs, so it’s better to use enumeration format unless your requirements call for the derived class.Handling phone numbers effectively is important for security and ease of use in all these software systems.To help Android and other application developers answer the question "Is this a valid telephone number?Fortunately, Tom Clegg has created a port of libphonenumber to C#, libphonenumber-csharp, so .NET developers can implement libphonenumber conveniently in their applications.