c# windows forms toolbar dataset

I have a datagrid which has the functionality to add,delete(multiple) and modify.

When I place simple buttons for Add/Delete/Modify it works. But when I use the toolbar button it behaves differently. The dataset changes are lost. [url removed, login to view] return false even though the data has been entered in new row.

## Deliverables

1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.

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## Platform

.net c# windows forms

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