The Solution Explorer, which displays the current solution and a list of all loaded projects, also displays the code, class, and form module files contained in each loaded project, and the references to the external libraries used by each project.
The Solution Explorer has its own toolbar, which can be used to open various project components for editing. Use the View Code button to open the code for a selected module in the Editor Window. Use the Properties button to set focus to the Properties window and the properties of the selected item.
The Solution Explorer is visible by default. If it is not visible, click View menu 
Solution Explorer or press Ctrl+Alt+L.