Mvc4.0添加商品到Cookie_.NET_编程开发_程序员俱乐部

/// <summary>
/// 添加Cookie
/// </summary>
/// <param name="gc">GoodsToCookie</param>
public static int AddCookies(GoodsCookie gs)
{
string userID = null;
if (HttpContext.Current.Session["hasLogin"] != null)
{
userID = HttpContext.Current.Session["hasLogin"].ToString();//登录
}
ShoppingMallContext db = new ShoppingMallContext();
var cookies = HttpContext.Current.Request.Cookies["MyShoppingCart"]; //创建Cookie并命名
if (cookies == null)
{
string strCookie = gs.skuID + "-" + gs.count + ",";
cookies = new HttpCookie("MyShoppingCart") //对象初始化
{
Expires = DateTime.Today.AddDays(1),//过期时间
Value = strCookie//Cookie赋值
};

HttpContext.Current.Response.Cookies.Add(cookies);//添加进Cookie

if (userID != null)//如果用户登录了
{
SkuShoppingCart sc = new SkuShoppingCart();//初始化购物车类
sc.GoodsSkuID = gs.skuID;//完成之后给类的属性赋值
sc.ShoppingCartID = db.ShoppingCarts//根据用户ID来找相对应的购物车ID
.Where(f => f.UserID == userID)
.Select(f => f.ShoppingCartID)
.Single();
sc.SkuCount = gs.Count;//统计数量
db.SkuShoppingCarts.Add(sc);//添加进数据库
}
return 1;
}
else
{

if (String.IsNullOrWhiteSpace(cookies.Value))//判断Cookies里值为不为空
{
string strCookie = gs.skuID + "-" + gs.count + ",";
cookies = new HttpCookie("MyShoppingCart") //对象初始化
{
Expires = DateTime.Today.AddDays(1),
Value = strCookie
};
HttpContext.Current.Response.Cookies.Add(cookies);//添加进Cookie
if(userID != null)
{
SkuShoppingCart sc = new SkuShoppingCart();
sc.GoodsSkuID = gs.skuID;//完成之后给类的属性赋值
sc.ShoppingCartID = db.ShoppingCarts//根据用户ID来找相对应的购物车ID
.Where(f => f.UserID == userID)
.Select(f => f.ShoppingCartID)
.Single();
sc.SkuCount = gs.Count;//统计数量
db.SkuShoppingCarts.Add(sc);//添加进数据库
}
return 1;
}
else//返之
{
#region -----添加到字典-----

Dictionary<int, int> dict = new Dictionary<int, int>();//初始化字典
string goods = cookies.Value;//声明一个string变量并赋值 为 Cookie
goods = goods.Substring(0, goods.Length - 1);//指定字符串长度
string[] skuidArray = goods.Split(',');//拆解字符串并赋值给skuidArray数组
int count = 0;//声明一个Int变量
foreach (var i in skuidArray)//迭代数组
{
if(i =="" || i == null)//如果没有值
{
continue;//继续
}
else//如果有
{
string[] strCont = i.Split('-');//拆解字符串
int key = int.Parse(strCont[0]);//第一个
int value = int.Parse(strCont[1]);//第二个
//判断字典里有没有这个key
if (dict.ContainsKey(key))
{
dict[key] += value;//如果有就叠加
}
else//没有
{
dict.Add(key, value);//添加进字典
}
}

}
#endregion

#region ------- 字典判断 -------

if (dict.ContainsKey(gs.skuID))//如果字典里有这个ID
{
dict[gs.skuID] += gs.count;
count += skuidArray.Count();//就让他们的数量相加
}
else
{
dict.Add(gs.skuID, gs.count);
count = skuidArray.Count() + 1;//如果没有，就往字典(dict)添加一个新的
}

string countStr = "";
foreach (var v in dict)//再迭代字典拼字符串
{
countStr += v.Key + "-" + v.Value + ",";//键值对
}
cookies = new HttpCookie(countStr)
{
Expires = DateTime.Today.AddDays(1),
Value = countStr
};//拼好了添加到Cookie

HttpContext.Current.Request.Cookies.Add(cookies);
if (userID != null)//如果用户登录了
{
SkuShoppingCart sc = new SkuShoppingCart();//初始化购物车类
sc.GoodsSkuID = gs.skuID;//完成之后给类的属性赋值
sc.ShoppingCartID = db.ShoppingCarts//根据用户ID来找相对应的购物车ID
.Where(f => f.UserID == userID)
.Select(f => f.ShoppingCartID)
.Single();
sc.SkuCount = gs.Count;//统计数量
db.SkuShoppingCarts.Add(sc);//添加进数据库
}
return count;//数量

#endregion

}
}
}