Note that group cells are also counted as rows and, thus, have row indexes.
For further information about row indexes, see the Grid Rows topic.
When implementing a handling function for this event, use the object passed to this function as its parameter.
NET in VS2010 it seems that when you close a Win Form the "Row Validating" event of the Data Grid View on that form behaves differently depending on whether the form is MODAL or NON-MODAL.
They do not occur when the Rad Grid View loads data.
The Cell Validating event occurs always before the Cell Validated event when the edited cell is about to lose its focus.
The validation events are meant to support the data validation of the user input.
They occur when the new content entered by the user is about to be committed.