How to capture the edited column or row

pivotGrid.EnableValueEditing = true;
pivotGrid.EnableUpdating = true;
 

public class PivotCustomEditManager : PivotEditingManager
{
private PivotGridControl _pivotGrid;
private bool _changeValueHandled = false;
private int lastRow = 0;
private int lastCol = 0;
private object lastVal = 0;
public PivotCustomEditManager(PivotGridControl pg)
: base(pg) 
{
_pivotGrid = pg;
}
/// <summary>
/// Override this method to control how the changes affect the pivot display. The base implementation calls IAdjustable methods on the summaries to accomplish the change.
/// </summary>
/// <param name="oldValue">The old value from the cell that was edited.</param>
/// <param name="newValue">The new value from the cell that was edited.</param>
/// <param name="row1">Points to the row index of cell being adjusted. This cell may be different from the cell that was edited.</param>
/// <param name="col1">Points to the column index of cell being adjusted. This cell may be different from the cell that was edited.</param>
/// <param name="pi">The <see cref="PivotCellInfo"/> for the cell being adjusted.</param>
protected override void ChangeValue(object oldValue, object newValue, int row1, int col1, PivotCellInfo pi)
{
if (row1 != _pivotGrid.InternalGrid.CurrentCell.RowIndex || col1 != _pivotGrid.InternalGrid.CurrentCell.ColumnIndex) return;
if (lastRow == row1 && lastCol == col1 && newValue == lastVal) return;
double oldTotal;
double newTotal;
if (!double.TryParse(oldValue.ToString(), out oldTotal) || !double.TryParse(newValue.ToString(), out newTotal))
return;
// Get the raw items that make up the cell that was changed
List<object> rawItems = _pivotGrid.PivotEngine.GetRawItemsFor(row1, col1);
if (rawItems != null && rawItems.Count > 0)
{
SpreadValue(rawItems, "Quantity", oldTotal, newTotal, pi);
}
lastRow = row1;
lastCol = col1;
lastVal = newValue;
_changeValueHandled = true;
}
/// <summary>
/// This method is used to spread the newly edited value to the rawItems so that it will get update in datasource
/// </summary>
private void SpreadValue(List<object> rawItems, string calcFieldName, double oldValue, double newValue, PivotCellInfo pi)
{
// apply some VERY simple spreading for now
foreach (var item in rawItems)
{
var row = ((DataRowView)item).Row;
row[calcFieldName] = newValue / rawItems.Count;
}
}
}
 

pivotGrid.EditManager = new PivotCustomEditManager(pivotGrid);