.Net Excel Interop Deleting a worksheet

Question

I\'m trying to delete a worksheet from a excel document from a .Net c# 3.5 application with the interop Excel class (for excel 2003).

I try many things like :

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Answer 1

we can delete the work sheet like this

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

                if (xlApp == null)
                {

                    return;
                }


                xlApp.DisplayAlerts = false;
                string filePath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)
                                        + "\\Sample.xlsx";
                Excel.Workbook xlWorkBook = xlApp.Workbooks.Open(filePath, 0, false, 5, "", "", false, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "", true, false, 0, true, false, false);
                Excel.Sheets worksheets = xlWorkBook.Worksheets;

                worksheets[4].Delete();
                worksheets[3].Delete();
                xlWorkBook.Save();
                xlWorkBook.Close();

                releaseObject(worksheets);
                releaseObject(xlWorkBook);
                releaseObject(xlApp);

and use this

  static void releaseObject(object obj)
        {
            try
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
                obj = null;
            }
            catch (Exception ex)
            {
                obj = null;
                throw ex;

            }
            finally
            {
                GC.Collect();
            }
        }