Get values from all cells that are shown at the same level as a clicked cell

You can use the GetCellValue(Object[] columnValues, Object[] rowValues, PivotGridField dataField); method to get a value from a cell by corresponding row and column field values. To iterate through the last level field values use the PivotGridFieldBase.GetVisibleValues method. To get information about higher level values corresponding to a clicked cell use the PivotCellBaseEventArgs.GetColumnFields, PivotCellBaseEventArgs.GetRowFields and PivotCellBaseEventArgs.GetFieldValue methods.