I now have installed (from the same install) Enterprise Library - January 
2006 and Enterprise Library - June 2005.  The install for these two was 
called Enterprise Library for .Net 2.0.  (not Enterprise Library 2.0). I 
then discovered that there is an Enterprise Library 3.1 - May 2007.  So I 
want to install that because it is the latest.

The instructions, however, say that if I already have Enterprise Library 3.0 
installed, I must uninstall it before installing 3.1.  However the two 
versions I already have don't have a version number - they just say June 
2005 and January 2006 so I don't know if that is 3.0.

The instructions also say that I can go ahead and install Enterprise Library 
3.1 when "2.0" is already installed. I'm wondering if they mean "Enterprise 
Library 2.0" or "Enterprise Library for .Net 2.0" ??

The problem here is that Enterprise Library sometimes goes by the Month and 
year, sometimes it has a version number by itself, and sometimes it just 
says Enterprise Library for .Net 2.0"

All this time I'm trying to remember that the purpose of all this is to save 
me time.

Anyone understand this number jumble?

-- 
Regards,
Gary Blakely

Hi Gary,

Please make sure you download the EntLib from Microsoft download site 
instead of CodePlex, the open source workspace for the project.

Although we released source code of EntLib on CodePlex, the purpose of it 
is to let community customize the EntLib to their own use. However, all 
downloads of EntLib on Microsoft site are created and maintained by 
Microsoft developers.

Please check following official EntLib downloads:

http://msdn2.microsoft.com/en-us/library/aa480453.aspx

You will find following releases available:

Latest Release: Enterprise Library 3.1 C May 2007 (for .NET Framework 2.0 
and 3.0) 
Enterprise Library 3.0 C April 2007 (for .NET Framework 2.0 and 3.0) 
Earlier Release: Enterprise Library for .NET Framework 2.0, January 2006 
Earlier Release: Enterprise Library for .NET Framework 1.1, June 2005 


The reason that we keep all versions available is that:

1) There're many breaking changes for v1 to v2 due to .NET Framework 
changes.
2) Although we maintained most backward compatibility from v2 to v3, it's 
still not necessary to upgrade from v2 to v3, especially for those already 
largely incorporated v2 in their code, instead, they can get small patches 
accordingly. Therefore we still keep all versions available.

Hope this clarifies a bit. Let me know if there's anything else unclear.

Regards,
Walter Wang (wawang@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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