private void button1_Click(object sender, EventArgs e) { string path = @"C:\123.xls"; IWorkbook workBook = ExcelTool.getWorkBook(path); ExcelTool.getSheetDataAt(workBook, 0); ISheet sheet = workBook.GetSheetAt(0); ExcelTool.deleteSheetRow(ref sheet, 14); Stream fs = new FileStream(path, FileMode.Open); workBook.Write(fs); fs.Close(); }