An important event you’ll want to write code for is the Form Load event.
You might want to, for example, set the Enabled property of a control to False
when a form loads. Or maybe blank out an item on your menu. You can do all this
from the Form Load event.
Add another button to your form for this example, and we’ll see how the Form
Load event works. (If you haven’t been folowing along, create a new project
and add two buttons to it.
Bring up your coding window, and select the Form1 Events from the drop down
In the events drop down box, select Load:
A code stub for the Form Load event is then added to your code. Type in the
following as the code for the Load Event:
MessageBox.Show(“Form Load Event”)
Run your programme. You should see the message box display before the Form
To switch off your second Button before the Form loads, add this to your code:
Button2.Enabled = False
Run your programme again. You should see that button is no longer available
for clicking on.
We’ll now up the pace a bit. We’ll have a look at just what Objects are, and
how you can create your own.
Kaynak : https://www.homeandlearn.co.uk/NET/nets10p4.html ‘sitesinden alıntı