System.Security.Cryptography (mscorlib.dll)sealed class
public sealed class RNGCryptoServiceProvider : RandomNumberGenerator {
// Public Constructors
   public RNGCryptoServiceProvider(  );
   public RNGCryptoServiceProvider(byte[  ] rgb);
   public RNGCryptoServiceProvider(CspParameters cspParams);
   public RNGCryptoServiceProvider(string str);
// Public Instance Methods
   public override void GetBytes(byte[  ] data);
 // overrides RandomNumberGenerator
   public override void GetNonZeroBytes(byte[  ] data);
 // overrides RandomNumberGenerator
// Protected Instance Methods
   protected override void Finalize(  );
 // overrides object

This subclass of RandomNumberGenerator is the default random number generator implementation, and is a wrapper around the Windows Crypto API.


System.Object RandomNumberGenerator RNGCryptoServiceProvider

    Part V: API Quick Reference