Drill Down(PivotItem, Object)
Enables you to drill down into the data within an OLAP or PowerPivot based cube hierarchy.
public void DrillDown (Microsoft.Office.Interop.Excel.PivotItem PivotItem, object PivotLine);
The member from which the drill down is performed.
Specifies the line in the PivotTable where the operation starting member resides. In cases where PivotLine is not specified, defaults to the top PivotLine where the member appears.