entity addnew

        string email, name, phone;
        email = tbEmail.Text;
        name = tbName.Text;
        phone = tbPhone.Text;

        LaptopModel.LaptopEntities le=new LaptopModel.LaptopEntities();
        LaptopModel.trade_Order to = new LaptopModel.trade_Order();
        to.name = name;
        to.phone = phone;
        to.email = email;
        le.AddTotrade_Order(to);
        le.SaveChanges();