购物车序列化

  网上找到的一个购物车类,但是经过反复的测试,发现其中序列化后数据会出现问题,改成以下的模块就正常了。

代码
 /// <summary>
        
/// 将ShoppingCart写入Cookie
        
/// </summary>
        
/// <param name="SC">ShoppingCart对象</param>
        
/// <param name="CookieName">CookieName,默认为ShoppingCart</param>
        public static string ShopCartToCookie(ShoppingCart SC, string CookieName)
        {
            
if (CookieName == null || CookieName=="") { CookieName = "ShoppingCart"; }
            
if (SC == null)
            {
                WriteCookie(CookieName, 
"",148);
                
return "";
            }
            
else
            {
                IFormatter fm 
= new BinaryFormatter();
                MemoryStream sm 
= new MemoryStream();
                fm.Serialize(sm, SC);
                
byte[] bty = new byte[sm.Length];
                bty 
= sm.ToArray();
                
string strCart = Convert.ToBase64String(bty);
                strCart 
= System.Web.HttpContext.Current.Server.UrlEncode(strCart);
                WriteCookie(CookieName, strCart,
148);
                
return strCart;
            }
        }


        
/// <summary>
        
/// 将Cookie反序列化为ShopCart
        
/// </summary>
        
/// <param name="CookieName">CookieName,默认为ShopCart</param>
        public static ShoppingCart CookieToShopCart(string CookieName)
        {
            
if (CookieName == null || CookieName=="") { CookieName = "ShoppingCart"; }
            
string StrCart = System.Web.HttpContext.Current.Server.UrlDecode(GetCookie(CookieName));
           
            
if (StrCart==null||StrCart=="")
            {
                
return null;
            }
            
byte[] bt = Convert.FromBase64String(StrCart);
            Stream sm 
= new MemoryStream(bt);
            IFormatter fm 
= new BinaryFormatter();
            ShoppingCart SC 
= (ShoppingCart)fm.Deserialize(sm);
            
if (SC==null)
            {
                
return null;
            }
            
else
            {
                
return SC;
            }
        }

 

 

posted @ 2010-03-04 16:02  Ethan_村长  阅读(394)  评论(2编辑  收藏  举报