i am using visual studio 2017 with .net 4.8 and when i hit publish the option for Self-Contained app or Single File option doesn't show and i tried opening the project with Visual Studio 2020 and still the option doesn't show. this is a WPF application
CodePudding user response：
According to the official documentation.
This deployment model has been available since .NET Core 3.0 and has been enhanced in .NET 5. Previously in .NET Core 3.0, when a user ran your single-file application, the .NET Core host first extracted all the files into a directory before running the application.
.NET 5 improves this experience by running the code directly without extracting files from the application.
So the answer to that question is, you can't use single file publishing under .net 4.8.