I have a very basic question on vb.NET, so basic that I didn't find any answer elsewhere.
I've written with VB express a code that is a simple form proposing various choices through checkboxes.
These choices have to be registered in an array, which I convert later into a textfile to be Perl-processed.
I'm searching a way to zeroise this big array with loops before use, but in fact I don't know how to execute instructions which wouldn't be triggered by events in my main form.
The frame looks like that :

```
Public Class Form1
'Variables declaration...

'Several boxes like that :
Private Sub CheckBox1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged
'Instructions...
End Sub

End Class

```

To launch this application, I simply click on the associated .exe file.
Basically, my question is : 
is there a way to execute instructions that wouldn't be launched by an user event, but immediatly launched when the main Form1 is shown ?
Sorry for being retarded, and thank you in advance if you can help me.