Probably a stupid question, but ...
If I target my Winforms application at Framework 3.5, but I use some Infragistics WinForms components (which are compiled against Framework 2.0), what Framework will the resulting application run in?
I'm pretty sure that the 3.5 (and 3.0) framework still use the CLR of the 2.0 framework, so you really wouldn't have any effective difference in the application, aside from the fact that the application would require that the 3.5 framework be installed.
There is a mention of a different version of Winforms 8.3 for Framework 3.x that supports some extended Excel functionality - is there another installer for that?
I don't believe that there is a separate installer. What you need to do is look for the assemblies that start with "Infragistics3" for CLR3.x-specific versions. You will only need those Excel-related assemblies if you need to support the Office2007 format.
Ok yes - I see that now!