I have an application with some textboxes. My user fills the textboxes and runs some methods, when they close the application data is lost (normally).
I want to ke
There are a couple of options, but with most of them, you're going to be putting a file somewhere, whether it's a text file, resources/config or binary.
Using settings is one option: http://www.codeproject.com/Articles/17659/How-To-Use-the-Settings-Class-in-C
You can also take the serialization route: http://msdn.microsoft.com/en-us/library/vstudio/et91as27.aspx
Or you could possibly look into noSQL databases like MongoDB: http://www.mongodb.org/