The event handler receives an argument of type System.EventArgs containing data related to this event.
This event fires when the cell selection is modified by an end-user or in code. The current selection can be obtained using the PivotGridCells.Selection property of the Cells object. This property can also be used to modify the cell selection.
The CellSelectionChanged event doesn't occur when focus is moved to a new cell. To respond to a cell focus change, use the FocusedCellChanged event.