Fix sample output for .NET Core on SymmetricAlgorithm.BlockSize (#4300)

Author: vcsjones

samples/snippets/csharp/VS_Snippets_CLR_System/system.security.cryptography.symmetricalgorithm.blocksize/cs/program.cs

@@ -80,7 +80,7 @@ static void Main(string[] args)
         }
     }
 }
-//This sample produces the following output:
+//This sample produces the following output when run on .NET Framework:
 //AesManaged
 //        Legal min key size = 128
 //        Legal max key size = 256
@@ -106,4 +106,31 @@ static void Main(string[] args)
 //        Legal max key size = 192
 //        Legal min block size = 64
 //        Legal max block size = 64
+//
+//This sample produces the following output when run on .NET Core:
+//AesManaged
+//        Legal min key size = 128
+//        Legal max key size = 256
+//        Legal min block size = 128
+//        Legal max block size = 128
+//DESCryptoServiceProvider
+//        Legal min key size = 64
+//        Legal max key size = 64
+//        Legal min block size = 64
+//        Legal max block size = 64
+//RC2CryptoServiceProvider
+//        Legal min key size = 40
+//        Legal max key size = 128
+//        Legal min block size = 64
+//        Legal max block size = 64
+//RijndaelManaged
+//        Legal min key size = 128
+//        Legal max key size = 256
+//        Legal min block size = 128
+//        Legal max block size = 128
+//TripleDESCryptoServiceProvider
+//        Legal min key size = 128
+//        Legal max key size = 192
+//        Legal min block size = 64
+//        Legal max block size = 64
 //</Snippet1>

samples/snippets/visualbasic/VS_Snippets_CLR_System/system.security.cryptography.symmetricalgorithm.blocksize/vb/program.vb

@@ -82,7 +82,7 @@ Class Program
 
     End Sub
 End Class
-'This sample produces the following output:
+'This sample produces the following output when run on .NET Framework:
 'AesManaged
 '        Legal min key size = 128
 '        Legal max key size = 256
@@ -108,4 +108,31 @@ End Class
 '        Legal max key size = 192
 '        Legal min block size = 64
 '        Legal max block size = 64
+'
+'This sample produces the following output when run on .NET Core:
+'AesManaged
+'        Legal min key size = 128
+'        Legal max key size = 256
+'        Legal min block size = 128
+'        Legal max block size = 128
+'DESCryptoServiceProvider
+'        Legal min key size = 64
+'        Legal max key size = 64
+'        Legal min block size = 64
+'        Legal max block size = 64
+'RC2CryptoServiceProvider
+'        Legal min key size = 40
+'        Legal max key size = 128
+'        Legal min block size = 64
+'        Legal max block size = 64
+'RijndaelManaged
+'        Legal min key size = 128
+'        Legal max key size = 256
+'        Legal min block size = 128
+'        Legal max block size = 128
+'TripleDESCryptoServiceProvider
+'        Legal min key size = 128
+'        Legal max key size = 192
+'        Legal min block size = 64
+'        Legal max block size = 64
 '</Snippet1>