Why does the combo box SelectedIndexChanged fire so often?

If you're under the impression that the combobox SelectedIndexChanged event fires more than you would normally expect, you're not alone.

The SelectedIndexChanged event fires:

• When the user selects a different item in the combo box

• When you programmatically change the combo box's SelectedIndex property

• When you bind data to the combo box

• When you Show the form on which the combo box resides
  

Based on this, you may want to wait until the form's Load event to register any event handlers for the SelectedIndexChanged event!