static void Main()
        {
            Excel.Workbook  workbook  = _app.Workbooks.Open(@"C:\test\Dupes.xlsx");
            Excel.Worksheet worksheet = workbook.Sheets[1];

            Excel.Range range = worksheet.UsedRange;

            range.AdvancedFilter(Excel.XlFilterAction.xlFilterInPlace, null, null, true);

            workbook.Close(true);

            Marshal.ReleaseComObject(_app);
        }