I know how to check if a key is pressed if I'm in a method. But lets say I just want to check if something is pressed at any point during the program. How do I go about doing that? What/Where do I add to let this happen?

If you want an event any time a key is pressed, you could use a global key hook. See http://www.codeproject.com/csharp/globalhook.asp for an implementation.

Or do you want to be able to read the current keyboard state from a specific point in the code?

If you are using WinForms you can set the forms KeyPreview property to true, then the form fires Key events whenever a key is pressed. Hooking in with a global hook gives you all key presses regardless if they have anything to do with your app.

If you want an event any time a key is pressed, you could use a global key hook. See http://www.codeproject.com/csharp/globalhook.asp for an implementation.

Or do you want to be able to read the current keyboard state from a specific point in the code?

If you are using WinForms you can set the forms KeyPreview property to true, then the form fires Key events whenever a key is pressed. Hooking in with a global hook gives you all key presses regardless if they have anything to do with your app.