Secure exe/dll

From: Aman (akg_at_infores.com)
Date: 05/23/03 

Date: Fri, 23 May 2003 08:51:24 -0700

I've a quick question regarding how to prevent my
customers from seeing my code using MSIL Disassembler
(Ildasm.exe) from my EXE/DLL's. If I use the Ildasm.exe
and open a C#.NET EXE/DLL I can see the source code and I
don't want anyone seeing the code that generated the
DLL/EXE since it contains some complex and secret code.
Does anyone have any idea how to creat a secure .NET
exe/dll that cannot be disassambled by Ildasm.exe or other
tools?
Thanks,a