COM Interoperability In C#??????

[Leesen]

Hi, all I come accross a problem again. Firstly,I make a ActiveX Dll(myDll.dll) in Visual Basic 6.0. And in myDll.dll there is only one function as follow: Public Function show ( ) MsgBox ( "Hello world!" ) End Function Then, I type this command in dos: TlbImp mydll.dll /out: my.Dll According the reference ,then I can invoke the method "show" in my C# console apllication. My C# application(try.cs) as follows: using my ; using System ; namespace Hello { public class Activex { public static void Main ( ) { Class1 s = new Class1 ( ) ; s.show ( ) ; } } } Finally,I type such command : csc /r:my.dll try.cs But errors ocurres, and details are showed as follows: Try.cs(10,25): error CS0246: The type or namespace name 'Class1' could not be found (are you missing a using directive or an assembly reference?) Try.cs(11,25): error CS0246: The type or namespace name 's' could not be found (are you missing a using directive or an assembly reference?) who can tell me why ? regards.