Question

I have been working on some code for a while. And I had a question:

What it the difference between these two codes ?

using (FORM formExemple = new FORM ())
{
formExemple.ShowDialog();
}

and

FORM formExemple = new FORM ();
formExemple.ShowDialog();

Answer 1

using calls the object’s Dispose() method to clean up after itself when it’s done. It usually handles things like closing open connections and/or freeing up memory. If you instantiate it otherwise, you have to do that manually. You can only use using on objects that implement the IDisposable interface, which ensures that a method Dispose() exists for the object.