public ProductTag()
{
//初始化ASP.NET内置对象
Response = System.Web.HttpContext.Current.Response;
Request = System.Web.HttpContext.Current.Request;
Server = System.Web.HttpContext.Current.Server;
Session = System.Web.HttpContext.Current.Session;
Application = System.Web.HttpContext.Current.Application;
tools = ToolsFactory.CreateTools();
MyBLL = ProductTagFactory.CreateProductTag();
MyProduct = ProductFactory.CreateProduct();
}