private void btnAutoFilter_Click(object sender, EventArgs e)
        {
            int colCount  = 32;
            int dataCount = 1648;
            int lastRow   = 1651;

            using (var excel = new Excel.Application())
            {
                excel.Visible = true;

                using (var workbook = excel.Workbooks.Open(Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetModules()[0].FullyQualifiedName) + "\\Templates\\AutoFilter.xls"))
                {
                    using (var worksheet = workbook.ActiveSheet)
                    {
                        worksheet.AutoFilterMode = false;

                        int start = 0;
                        using (var r = worksheet.Range("__Table__"))
                            start = r.Row;

                        using (var r = worksheet.Range(STC.Automation.Office.Excel.Utilities.Ranges.Format(start - 1, 1)))
                            r.AutoFilter();

                        for (int c = 1; c <= colCount; c++)
                        {
                            using (var r = worksheet.Range(STC.Automation.Office.Excel.Utilities.Ranges.Format(start, c, start + dataCount, c)))
                            {
                                // set formats before calculating column autofit
                                if (c >= 13 && c <= 20)
                                {
                                    r.NumberFormat = Ranges.ConvertFormat("C0");
                                }

                                if (c >= 21 && c <= 24)
                                {
                                    r.NumberFormat = Ranges.ConvertFormat("dd/MM/yyyy");
                                }


                                r.Columns.AutoFit();
                                if (r.ColumnWidth > 80)
                                {
                                    r.ColumnWidth = 80;
                                }
                            }
                        }

                        //// sort the AutoFilter by data in column B
                        //using (var filter = worksheet.AutoFilter)
                        //{
                        //    filter.Sort.SortFields.Clear();

                        //    using (var range = worksheet.Range("B4:B" + lastRow))
                        //        filter.Sort.SortFields.Add(range, Excel.Enums.SortOn.Values, Excel.Enums.SortOrder.Ascending, Excel.Enums.SortDataOption.Normal);

                        //    filter.Sort.Header = Excel.Enums.YesNoGuess.Yes;
                        //    filter.Sort.MatchCase = false;
                        //    filter.Sort.Orientation = Excel.Enums.SortOrientation.Columns;
                        //    filter.Sort.Apply();
                        //}
                    }

                    excel.DisplayAlerts = false;
                    workbook.Save();
                    excel.DisplayAlerts = true;
                    //workbook.Close();
                }

                //excel.Quit();
            }
        }