I have a windows form that has 4 comboboxes inside. These 4 boxes are linked, in that when the first box receives user selected data, the second box populates. When the second box receives user selected data, the third box populates. At least that is how I want this to happen. Instead, when the form loads, the first box populates, and so the SelectedIndexChanged event is thrown. This triggers the second combobox, and subsequently the third. Is there a way to keep this from happening? Of course, the first combobox will be populated with the form_load, but to keep the others from populating?