Listing 9-18 extracted from chapter Fundamental concepts of the language

Listing 9-17<     > Listing 9-19

This listing can be compiled with the command line:
csc.exe /out:Program.exe /target:exe Example_9_18_to_rename_Program.cs /r:AliasAsm1=Asm1.dll /r:AliasAsm2=Asm2.dll
Errors: 0 Warnings: 0

extern alias AliasAsm1;
extern alias AliasAsm2;
class Program{
   static void Main(){
      AliasAsm1::FooIO.Stream stream1 = new AliasAsm1::FooIO.Stream();
      AliasAsm2::FooIO.Stream stream2 = new AliasAsm2::FooIO.Stream();
   }
}