I’ve got a standard library I include in my .Net projects with a bunch of general purpose utilities. There’s still a lot to add to it, but some of the code might be useful to you, so it’s available on GitHub now (https://github.com/ScottLilly/DotNetToolBox).
The main things in it are extension methods for datatype conversion. I prefer using them, since they make the code a bit more readable to me.
I need to make some of the methods more consistent, add some more datatypes, and add unit tests, but it’s a place to start.
Let me know if there’s anything you’d like to see added to it, or if you have any problems with it.