My goal is recognize that a string is bitcoin address or not.(Offline Mode)
So for this purpose introduce a good library.

Would you please show some examples of usage these methods :
AddressType GetAddressType(string address, NetworkType netType)
AddressType GetAddressType(string address, NetworkType netType, out byte[] data)
bool VerifyType(string address, PubkeyScriptType scrType, out byte[] hash)

What is NetworkType netType? Is this method working offline?
I need a method that returns TRUE or FALSE.