I agree with answer 1 that this is what should happen, and often it happens. But it does not always work and will work partially.
For example, my current solution.
Project 1 ToolTester - .
Project 2 UltimateFileFinder - .
2 ( ) UltFilesView UltSlideShow , , , ToolsTester, .
UltPanel, . .
, . .
Visual Studio ( ) , , , .
, , , , , , , , .