2 projects and references between them
I have main project and second with several `UserControls`.
I use in main project this usercontrols, and in `UserControls` is a need to use some classes (responsible for `BusinessLogic` and `DataAccessLayer`) from main project.

How to connect both projects? Now it creates circular dependency.
2 projects and references between them
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I have main project and second with several `UserControls`.
I use in main project this usercontrols, and in `UserControls` is a need to use some classes (responsible for `BusinessLogic` and `DataAccessLayer`) from main project.

How to connect both projects? Now it creates circular dependency.