How to set a `.sln` for Eglot to use?

[64J0]

• Related to How to set the sln file that Eglot is going to use to evaluate the project? #354

Hello again, hope you're good.

Is there a way to specify a .sln file that Eglot is going to use whenever I start using the LSP server for a project?

Furthermore, I'm curious to know how it handles the case where there are different .sln files at the same project.