SSIS: Script task to delete specific rows in Excel

Question

I am using a script task to delete particular rows in an Excel in SSIS. Previously it was working fine, then when I try to implement everything again I am getting error in the .Delete() codes. Find my code below,

            Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();

            var dir = new System.IO.DirectoryInfo(@"D:\Data_Processing\Input");
            var fullFilePath = dir.GetFiles("*.xlsx").Select(f => f.FullName).FirstOrDefault();

            if (fullFilePath != null)
            {
                Microsoft.Office.Interop.Excel.Workbook workBook = excelApp.Workbooks.Open(fullFilePath);

                foreach (Worksheet sheet in workBook.Worksheets)
                {
                    sheet.Rows[8].Delete();
                    sheet.Rows[7].Delete();
                    sheet.Rows[6].Delete();
                    sheet.Rows[5].Delete();
                    sheet.Rows[4].Delete();
                    sheet.Rows[3].Delete();
                    sheet.Rows[2].Delete();
                    sheet.Rows[1].Delete();
                }

                workBook.Save();
                workBook.Close(false);
                excelApp.Application.Quit();

                System.IO.File.Move(fullFilePath, @"D:\HC_Report.xlsx");

                Dts.Variables["User::FileExistsFlg"].Value = 1;
            }
            else
            {
                Dts.Variables["User::FileExistsFlg"].Value = 0;
            }

            Dts.TaskResult = (int)ScriptResults.Success;

And when I try to add Microsoft.Office.Interop.Excel in the References it is coming with a different icon as below

Can anyone please help with this?

Thanks,

Answer 1

I have manually added the.dll file from this location C:\WINDOWS\assembly\GAC_MSIL\Microsoft.Office.Interop.Excel\15.0.0.0__71e9bce111e9429c\Microsoft.Office.Interop.Excel.dll and then the error disappeared.