private void FrmSaleLog_Load(object sender, EventArgs e)
{
BllFactory.DLLBasePath = Application.StartupPath;
bll = BllFactory.GetReportBll();
logBll = BllFactory.GetSaleLogBll();
goodsBll = BllFactory.GetGoodsBll();
catBll = BllFactory.GetGoodsCategoryBll();
loadData();
}