How to add an existing project to a solution (Visual Studio)
You can add one or more projects to an existing solution.
To access Solution Explorer, click Solution Explorer on the View menu.
To add an existing project to a solution
- In Solution Explorer, select the solution.
- On the File menu, point to Add Project, and click Existing Project.
The Add Existing Project dialog box is displayed.
- Locate the project you want to add, and select the project file.
- Click Open.
The project is added to the selected solution.