- tableView
- Table view about to be edited.
- indexPath
- Location of the row that has been swiped.
This method is never called unless UITableViewSource.CommitEditingStyle(UITableView, UITableViewCellEditingStyle, Foundation.NSIndexPath) is also implemented.
When the user swipes across a row, the table view's UITableView.Editing property becomes true and a Delete button is shown in the row that was swiped (located at indexPath). This method is called to allow the user interface to be updated (for example, to provide a Cancel button to exit editing mode).
When exiting editing mode (such as after deletion operation), UITableViewSource.DidEndEditing(UITableView, Foundation.NSIndexPath) is called.