private void pnl_search_Click(object sender, EventArgs e)
{
IBLL.IGoods bll = new BLL.Goods();
all_list = bll.GetAllClsList();
this.total = all_list.Count;
int m = (int)Math.Ceiling((decimal)this.total / (decimal)this.pageSize);
this.pageCount = m;
this.pnl_first_Click(pnl_first, null);
}