/// <summary>
/// 增加一行账单
/// </summary>
/// <param name="goods"></param>
/// <param name="errorMessage"></param>
/// <returns></returns>
public DataTable addBills(Goods goods, out string errorMessage)
{
errorMessage = "";
ISheet sheet = ExcelTool.getWorkBook(filePath + fileName).GetSheetAt((int)TableId.GoodsTypeForExcel);
ExcelTool.createRow <Goods>(ref sheet, goods);
return(new DataTable());
}