public ref class RNGCryptoServiceProvider sealed : System::Security::Cryptography::RandomNumberGenerator public sealed class RNGCryptoServiceProvider : System.Security.Cryptography.RandomNumberGenerator [System.Obsolete("RNGCryptoServiceProvider is obsolete. To generate a random number, use one of the RandomNumberGenerator static methods instead.", DiagnosticId="SYSLIB0023", UrlFormat="https://aka