User372121194 posted
Hi,
The .csproj file or .vbproj file is used to save the project information. Visual Studio uses this file to compile ASP.NET application. When we use Web Deployment project to precompile application, WDP might copy these file, such as .csproj or obj folder,
etc, to target directory.
When you deploy your application on server, you can delete them.
I look forward to hearing from you.