I am developing with Framework 1.1 but I have a new application that requires
me to have Framework 2.0 installed on my computer.  How can I continue to
develop in Framework 1.1 if I have 2.0 installed?

No special action needed, 1.1 will still work after 2.0 is installed.


Mattias

Hi flyguy,

Yes, just as Mattias confirmed, there is no special action needed. This is
the benifit of .Net Side-by-Side execution.
Side-by-side execution is the ability to run multiple versions of an
application or component on the same computer. You can have multiple
versions of the common language runtime, and multiple versions of
applications and components that use a version of the runtime, on the same
computer at the same time.

So you can use VS.net2003 to develop .Net1.1 targed applications on the
machine with VS2005(or .Net Framework2.0) installed without any problem.
Actually, both of my 2 working machines have VS.net2003 and VS2005
installed and all the applications work well.

Also, new version of .Net keeps good backward compatibility with old
version, so even the machine does not have .Net1.1 installed, only .Net2.0,
we can still run .Net1.1 applications on the .Net2.0 CLR without much
problem.


For the detailed information regarding .Net side-by-side and backward
compatibility, please refer to the links below:
"Side-by-Side Execution  "
http://msdn2.microsoft.com/en-us/library/8477k21c(VS.80).aspx
"Ensuring .NET Framework 2.0 Compatibility"
http://msdn.microsoft.com/msdnmag/issues/06/03/CLRInsideOut/default.aspx

Finally, running Asp.net1.1 and 2.0 on the same machine may have some
setting restrictions and rules, please refer to the link below:
"Running ASP.NET 2.0 applications side-by-side with ASP.NET 1.1
applications "
http://www.dotneteer.com/weblog/archive/2006/02/02/2174.aspx

Hope this helps!

Best regards,
Jeffrey Tan
Microsoft Online Community Support
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