How to prompt to save the changed data in the subform when closing the MDI form?

hjclovewei

Ask you heroes, how to prompt to save the changed data in the subform when closing the MDI form? For example, there is a datagridview control in the subform form2, and the data has been modified, if you click the close button in the title bar of the parent form , Prompt: The data change is not saved, do you want to save it?

waxiaoning

Simply, write code in the closing event of the subform

deadmelody

You can write event code in the main form
addHandler SubForm.Closing addressof procedure name

两点水

The idea is to process some things before the subform is closed. The method is to write some processing code before the form is closed in the closing event of the subform.

hjclovewei

Very correct, thank you everyone!!