framework compatability

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Bob Bins - 30 Jan 2008 15:44 GMT

When upgrading a application from 1.1 to 2.0 3rd party assemblies needed to
be rebuilt for the 2.0 framework so they didn't have the performance hit of
running in side by side mode.

Is there any benifit to recompiling version 2.0 assemblies to 3 or 3.5 when
being used in a 3.0 or 3.5 application if their not using any of the new
functionality? Is there still the side by side performance hit when not
using the assemblies not built with the latest?

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Jon Skeet [C# MVP] - 30 Jan 2008 16:17 GMT

> When upgrading a application from 1.1 to 2.0 3rd party assemblies needed to
> be rebuilt for the 2.0 framework so they didn't have the performance hit of
[quoted text clipped - 4 lines]
> functionality? Is there still the side by side performance hit when not
> using the assemblies not built with the latest?

No. Rebuilding it would effectively produce the same binary. With 1.1,
you were running a different runtime. With 2.0 you're running the same
runtime whether you're using 2.0, 3.0 or 3.5.

Jon

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framework compatability

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