In last tutorial we created a blank solution, next we add project to a solution. Process of adding project to a solution is same irrespective of the fact that solution is blank or not.
- Open Solution Explorer (View -> Solution Explorer)
- Right click solution name or any solution folder
- Select Add -> New/Existing Project/WebSite (depending on what kind of item you want to add)
- For New item give them a name and for existing item select the project file and click OK.
You will see the Project beneath Solution Name or Solution Folder (depending on location of your right click).
You can repeat above steps multiple time to add multiple projects to the same solution file.
A Project file contains information about references used/required in the project and files included in project.