How Add Existing .cs Files to Visual Studio Projects in C#

1. Files with .cs extension are Source Code Files for C# (pronounced "C Sharp").
2. If you have a separate .cs file, you can open it separately, but you will not be able to compile the .cs file (Ctrl+F5), if you do not open it within a project.
3. Existing .cs files can be added either manually or automatically.
4. In order to add manually, we need to find the project location. For this, we right click on the project line and press "Open Folder in File Explorer" option.
5. Add your copied or cut .cs file within the Project file.
6. If you delete the added .cs file or manually in the project file, either way will remove the file from the list and the project file.
7. In order to add an existing .cs file in an automated way, right click on the project line, press "Add" option and then select "Add existing item" option. Existing .cs file will be added both in the list and in the project file.
8. Finally, you can also add your existing .cs file as a solution item. This is relevant in cases when you have several projects in your solution and use the same .cs file for at least two projects.
More details: docs.microsoft...
Music by: • Motivational Backgroun...