any way to find what triggered an event?

[Guest]

I have a listbox and auto generated lb_SelectedIndexChanged event that
handles lb.SelectedIndexChanged.

The event obviously fires when I change the selectedIndex visually with a
mouse and also when I do lb.selectedindex=1 (any different value from what it
was before) in various different subroutines?

Is there any way to know where the event was triggered from? Which
subroutine called it? could I use reflection to get that info?

Any tips?

Thank you

 

[Patrick Steele]

I have a listbox and auto generated lb_SelectedIndexChanged event that
handles lb.SelectedIndexChanged.

The event obviously fires when I change the selectedIndex visually with a
mouse and also when I do lb.selectedindex=1 (any different value from what it
was before) in various different subroutines?

Is there any way to know where the event was triggered from? Which
subroutine called it? could I use reflection to get that info?

I don't know if there's an "easy" way. I guess I would ask, why do you
need to know?

If there's just one spot where you may set an intial value and don't
want the event to fire when setting it, you could detach the event
handler, set your value and then reattach the event handler:

listbox1.SelectedIndexChanged -= new EventHandler
(lb_SelectedIndexChanged);
listbox1.SelectedIndex = 2;
listbox1.SelectedIndexChanged += new EventHandler
(lb_SelectedIndexChanged);

 

[Guest]

Very neat Pat, thank you, that's kind of what I was looking for