I want to make multiple combobox associated with each other. For example,
I have two combobox called country and city
First, there are countries in the first combobox and there is no city in the second combobox
When I select USA in the first combobox. There will be cities of USA in the second combobox.
When I select Canada, Cities of USA will disappear and cities of Canada will appear in the second combobox.
I need this, I request you to help me.
Thank you...


