I have a question regarding datagridview, I add data to the datagridview in an interface and all the validation for the datagridview cell is in the datagridview cell validating event for the datagridview. I display the data of the is datagridview in another interface and make the cells read-only. And the newly added rows can be editable. But the thing is when I click on a row that data was added previously and press the Add new row the cell validating event is triggered. How can I disable the cell validating event for the rows that was added before???