Give access to MouseEventArgs in Grid's RowClick event

[greenjaed]

When subscribing to a Grid's RowClick event, it would be nice to also know how the row was clicked. This could allow for a custom context menu or for handling shift+click to select a range of rows (I use OnRowClick to select rows). Having access to the MouseEventArgs in the GridRowEventArgs object, perhaps as a field, would be very welcome.