How can I handle ComboBox selected index changing?

Question

I have a ComboBox that have a list of manufacturers. When a user selects a manufacturer, a grid below is populated with data for the chosen manufacturer. That data can be mo

Answer 1

The ComboBox provides an event called SelectedIndexChanged. This event raises whenever the Property SelectedIndex changes, so you have to handle the event for, Whenever the user wants to change the index of the combo, if the user has not saved the changes, Ask him to do so.