The object model closely follows the user interface. The xref:Microsoft.Office.Interop.Excel.Application object represents the entire application, and each xref:Microsoft.Office.Interop.Excel.Workbook ...

Represents the drop lines in the specified chart group. Drop lines connect the points in the chart with the x-axis. Only line and area chart groups can have drop lines. This object isn't a collection.

Excel 2010 introduced Slicers, which you can use to filter PivotTable and PivotChart objects. A Slicer displays a set of buttons, instead of a dropdown, that you click to quickly filter the data ...