item changed listbox

[Drstein99]

I'm writing a program with a listbox. Sometimes the program will change the selected index of the list box by call of another function, or the user can change the selected listbox.

 

the event is:

 

Private Sub lbNextPage_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lbNextPage.SelectedIndexChanged

 

 

What is the "sender" object, and how can I tell if it was a mouse-click, or other event telling this function to execute?

[Volte]

Try this:

If sender Is lbNextPage Then
 'do whatever
End If

[Drstein99]

looks like sender is always lbnextpage, no matter if another function changes the selected value or the user changes via mouse click. I need to differentiate between the two.