This article introduces how to use Aspose.Cells library to directly calculate custom functions in Microsoft Excel without writing the function in a worksheet. By loading an existing Excel file or creating a new Excel file, we can use the methods provided by Aspose.Cells to calculate the custom function and get the result. Finally, we save the modified Excel file to disk....SetCalculatedValue ( Aspose :: Cells :: Object ( u "Aspose.Cells." )); } }...Aspose.Cells. Aspose :: Cells :: Object ret = ws . CalculateFormula...