Hi Herve,
See my article:
HOWTO: Getting information specific to VB.NET and C# projects from an add-in
or macro
http://www.mztools.com/articles/2005/MZ011.htm

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Best regards,
Carlos J. Quintero
MZ-Tools: Productivity add-ins for Visual Studio
You can code, design and document much faster:
http://www.mztools.com
> Hi
> i a programing an Add-In for Visual Studio .NET.
[quoted text clipped - 6 lines]
>
> Herve