Trapping for changes in datatables

[John C]

If one designs a windows form with many datasets/datatables and one allows the user to add, edit and delete records within the datasets.

If one also allows the user to 'Save All' or 'Cancell All' changes within the form.

What is the best way to warn the user that they have made some changes to the datasets if they try to close the form without doing a 'Cancell All' or a 'Save All'?

Hope this makes sense.

 

[zekeman]

Generally, now days things are done on a 'what you see is it' paradigm.

In other words, if you can see it, its already written into the database.

That's my thoughts, that the days of 'Save' buttons are in some ways, gone.