>Ok, but Studia itself always see all net its assemblies list plus created by developer in the current project
>Somehow it see it, this is also product written by code
>Does it mean, it loads all assemblies from fixed list written somewhere in property?
>I am sure, this is not correct, it must be some dynamic method of collecting all possible assemblies list

Are you referring to the VS Object Browser. If so - it does not list *all* assemblies. If lists what you ask it to. If you select 'My Solution' it will give you the same assemblies as would be obtained by Gregory's code. You *can* select different versions of the Framework that you have installed - but the process then probably depends on using the registry to check storage locations (HKLM\Software\Microsoft\.NetFramework\AssemblyFolders).

But you still haven't stated what you are trying to achieve. Exactly what assemblies are you interested in ?