I am very beginner, in English too but google is my friend

I tried approximation and got good results.
If I understand I need to register my network and in my application , load the network ...
This action saves the values calculated during learning , Ok
Once loaded my network do I need to do 'only' a ' compute ' for each entry I want to test?
Like output = network.Compute(new double[] { inputX, inputY});
I found examples of learning but nothing on after , on load and operate.
Thank you for your answers and your help