Save all inserted textbox data on a windows form application

Question

Hello,
i am a bit experienced with C#, i know what everything means and what is does and stuff :D
But I'm making a windows forms application now with lots of textboxes.
What i want is that when the user presses a "save" button(already got the button :P), the inserted strings in the texboxes are saved and can be loaded on next use.
Can anyone explain how i can do that? I think it is very easy, but i just don't know how :)

So all i need to know, is what is the C# code to save all inserted text and load it on next use.

Many thanks in advance,

Rick