public static ModelThongbao get_flash()
{
ModelThongbao thongbao = (ModelThongbao)System.Web.HttpContext.Current.Session["Thongbao"];
System.Web.HttpContext.Current.Session["Thongbao"] = "";
return(thongbao);
}
public static void set_flash(String msg, String msg_type)
{
ModelThongbao thongbao = new ModelThongbao();
thongbao.msg = msg;
thongbao.msg_type = msg_type;
System.Web.HttpContext.Current.Session["Thongbao"] = thongbao;
}