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

An easy way to keep track of unsaved changes.

After loading any original values, disable the "Save" button.

When the user attempts to leave, check to see if the "Save" button is enabled.

Enable or disable the "Save" button as required.