Excel Range.FillDown using EPPlus

Question

How can I perform a FillDown operation on ExcelRange using EPPlus?

https://docs.microsoft.com/en-us/office/vba/api/excel.range.filldown

Answer 1

            //create a new ExcelPackage
            using (ExcelPackage excelPackage = new ExcelPackage())
            {
                //create 2 WorkSheets
                ExcelWorksheet worksheet = excelPackage.Workbook.Worksheets.Add("Sheet 1");
                ExcelWorksheet worksheet2 = excelPackage.Workbook.Worksheets.Add("Sheet 2");

                //set the calculation mode to manual
                excelPackage.Workbook.CalcMode = ExcelCalcMode.Manual;

                //fill cell data with a loop, note that row and column indexes start at 1
                for (int i = 1; i <= 25; i++)
                {
                    for (int j = 1; j <= 10; j++)
                    {
                        worksheet.Cells[i, j].Value = (i + j) - 1;
                        worksheet2.Cells[i, j].Value = (i + j) - 1;
                    }
                }

                //set the total value of cells in range A1 - A25 into A27
                worksheet.Cells["A27"].Formula = "=SUM(A1:A25)";

                //set the number of cells with content in range C1 - C25 into C27
                worksheet.Cells["C27"].Formula = "=COUNT(C1:C25)";

                //fill column K with the sum of each row, range A - J
                for (int i = 1; i <= 25; i++)
                {
                    var cell = worksheet.Cells[i, 12];
                    cell.Formula = "=SUM(" + worksheet.Cells[i, 1].Address + ":" + worksheet.Cells[i, 10].Address + ")";
                }

                //calculate the quartile of range E1 - E25 into E27
                worksheet.Cells[27, 5].Formula = "=QUARTILE(E1:E25,1)";

                //set the total value of all cells in Sheet 2 into G27
                worksheet.Cells["G27"].Formula = "=SUM('" + worksheet2.Name + "'!" + worksheet2.Dimension.Start.Address + ":" + worksheet2.Dimension.End.Address + ")";

                //set the number of cells with content in Sheet 2, range C1 - C25 into I27
                worksheet.Cells["I27"].Formula = "=COUNT('" + excelPackage.Workbook.Worksheets[2].Name + "'!" + excelPackage.Workbook.Worksheets[2].Cells["A1:B25"] + ")";

                //calculate all the values of the formulas in the Excel file
                excelPackage.Workbook.Calculate();

                //Save the file
                FileInfo fi = new FileInfo("FormulaExample.xlsx");
                excelPackage.SaveAs(fi);
            }