In case of external references, most of the time, you do not need to browse the source files - that's something you reach for if inline documentation and type system are insufficient. Arguably much more of an issue in dynamically typed languages, yes.
Although even source browsing is now easy - you just press F12, and packages come with sourcelink integrated automatically (previously you had to rely on IDE to resolve symbols or decompile it from IL (readable but not perfect, Rider did and still does it really well)).
Navigating the solution itself does not differ significantly from Rust and its crate system. People usually structure the code by projects and folders, sometimes aggregating multiple types in a file (because you don't need a separate file per a couple of 4 line class declarations) sometimes not but I generally find the structure way more browsable than e.g. what a typical TypeScript project looks like. The regular symbol navigation rules apply - F12, Shift+F12 and friends.
Although even source browsing is now easy - you just press F12, and packages come with sourcelink integrated automatically (previously you had to rely on IDE to resolve symbols or decompile it from IL (readable but not perfect, Rider did and still does it really well)).
Navigating the solution itself does not differ significantly from Rust and its crate system. People usually structure the code by projects and folders, sometimes aggregating multiple types in a file (because you don't need a separate file per a couple of 4 line class declarations) sometimes not but I generally find the structure way more browsable than e.g. what a typical TypeScript project looks like. The regular symbol navigation rules apply - F12, Shift+F12 and friends.