Listing 9-16 extracted from chapter Fundamental concepts of the language

Listing 9-15<     > Listing 9-17

This listing can be compiled with the command line:
csc.exe /out:Asm1.dll /target:library Example_9_16_to_rename_Asm1.cs
Errors: 0 Warnings: 0

namespace FooIO{ public class Stream{} }