How can I create a self-signed certificate using C#?

I need to create a self-signed certificate (for local encryption - it's not used to secure communications), using C#.

I've seen some implementations that use P/Invoke with Crypt32.dll, but they are complicated and it's hard to update the parameters - and I would also like to avoid P/Invoke if at all possible.

I don't need something that is cross platform - running only on Windows is good enough for me.

Ideally, the result would be an X509Certificate2 object that I can use to insert into the Windows certificate store or export to a PFX file.