C# 64-bit DLL?

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Hello everyone,


I am using C# to develop DLL using Visual Studio 2005 and .Net 2.0, and I
have no idea of how to make my DLL work with applications on 64-bit platform.
Above all, I do not utilize any new features in my DLL of 64-bit. So, I want
to check the general rules,

1. For C#, is there a need to make two separate builds (32-bit and 64-bit)
according to the application (32-bit or 64-bit) which uses the DLL? i.e.
provide 64-bit application my 64-bit C# DLL, and provide 32-bit application
runs on 64-bit platform my 32-bit DLL?

2. If we have to make two separate builds, how to do it in Visual Studio
2005? I only find a setting names for Any CPU in project --> properties.


thanks in advance,
George
.

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