I have combobox in my installshield. I would require to write code in the click event of combobox before selecting the list items. Explain more : Combo box right side we have one drop down arrow. On that time of clicking that arrow I need to do some action in code. But I could see only after selection items in combo box, change name in the combo box (typing any name) I can get event. Unable to get event on the time of click arrow in combo box.