database programming with visualbasic

i had made an application using dataenvironment and datagrid control. I modifies the table using datagrid control. To rollback and commit these modifications i have put commandbuttons.
It works also. But the problem is that when i rollback the data it does not display rollbacked data in datagrid control. But when i close the application and again run it, it displays rollbacked data in datagrid control. So how i can display the rollbacked data in datagrid control without closing and again running the application ?
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i dont; have vb here so i can;t check this, but i think if you do a grid.refresh it should relook at the underlying data and do an update. i think there is also a property of the grid control that you can set which will automatically detect changes in the underlying data.
Easy Way! After rollback, use:

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