public String AddToCart(int id)
{
if (Session["ID"] != null)
{
int userId = ((int)Session["ID"]);
var cfs = from v in db.CartFlowers
where v.FlowerId == id && v.UserId == userId
select v;
CartFlower c = cfs.FirstOrDefault();
if (c == null)
{
CartFlower cf = new CartFlower();
cf.FlowerId = id;
cf.UserId = userId;
cf.Count = 1;
Flower f = db.Flowers.Find(id);
cf.Price = f.Price;
cf.Img = f.Img;
cf.ProductName = f.ProductName;
db.CartFlowers.Add(cf);
}
else
{
c.Count += 1;
db.Entry(c).State = EntityState.Modified;
}
db.SaveChanges();
return("添加购物车成功");
}
return("请先登录");
}
public ActionResult EditCart(int?id)
{
CartFlower cf = db.CartFlowers.Find(id);
if (cf == null)
{
return(HttpNotFound());
}
return(View(cf));
}
public ActionResult CartDelete(int?id)
{
CartFlower cf = db.CartFlowers.Find(id);
if (cf != null)
{
db.CartFlowers.Remove(cf);
db.SaveChanges();
}
return(RedirectToAction("Cart"));
}
public String ChangeCount(int id, int count)
{
CartFlower cf = db.CartFlowers.Find(id);
if (cf != null)
{
if (cf.Count != count)
{
cf.Count = count;
db.Entry(cf).State = EntityState.Modified;
db.SaveChanges();
}
return("OK");
}
return("ERROR");
}