asp.net-cookies购物车类
asp.net cookies 购物车类，实现购物车功能，实现无需注册就可购物
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
//文章来源：http://study.pctoday.net.cn/2_ASP.net.aspx
public class CookieShoppingCart
{
/// <summary>
/// 加入购物车
/// </summary>
/// <param name="ProductID"></param>
/// <param name="Quantity"></param>
public static void AddToShoppingCart(int ProductID, int Quantity, int Box)
{
if (HttpContext.Current.Request.Cookies["ShoppingCart"] == null)
{
HttpCookie oCookie = new HttpCookie("ShoppingCart");
//Set Cookie to expire in 3 hours
oCookie.Expires = DateTime.Now.AddYears(3);
oCookie.Value = ProductID.ToString() + ":" + Quantity.ToString() + ":" + Box.ToString();
HttpContext.Current.Response.Cookies.Add(oCookie);
}
//如果cookie已经存在
else
{
bool bExists = false;
HttpCookie oCookie = (HttpCookie)HttpContext.Current.Request.Cookies["ShoppingCart"];
oCookie.Expires = DateTime.Now.AddYears(3);
string ShoppingCartStr = oCookie.Value.ToString();
string[] arrCookie = ShoppingCartStr.Split(new char[] { ',' });
//查看cookie中是否有该产品
string newCookie = "";
for (int i = 0; i < arrCookie.Length; i++)
{
if (arrCookie[i].Trim().Remove(arrCookie[i].IndexOf(':')) == ProductID.ToString().Trim())
{
bExists = true;
string OldQuantity = arrCookie[i].Trim().Substring(arrCookie[i].Trim().IndexOf(':') + 1);//得到数量
OldQuantity = OldQuantity.Remove(OldQuantity.LastIndexOf(":"));
OldQuantity = (Convert.ToInt32(OldQuantity) + Quantity).ToString();
arrCookie[i] = arrCookie[i].Trim().Remove(arrCookie[i].IndexOf(':')) + ":" + OldQuantity + ":" + Box.ToString();
//HttpContext.Current.Response.Write(arrCookie[i].Trim().Remove(arrCookie[i].IndexOf(':')) + "已存在！数量：" + OldQuantity + "<br>");
//HttpContext.Current.Response.Write(arrCookie[i] + "<br>");
}
newCookie = newCookie + "," + arrCookie[i];
}
//如果没有该产品
if (!bExists)
{
oCookie.Value = oCookie.Value + "," + ProductID.ToString() + ":" + Quantity.ToString() + ":" + Box.ToString();
}
else
{
oCookie.Value = newCookie.Substring(1);
}
HttpContext.Current.Response.Cookies.Add(oCookie);
HttpContext.Current.Response.Write("ShoppingCart:" + HttpContext.Current.Request.Cookies["ShoppingCart"].Value);
}
}
/// <summary>
/// 移除购物车子项
/// </summary>
/// <param name="ProductID"></param>
public static void
RemoveShoppingCart(int ProductID)
{
if (HttpContext.Current.Request.Cookies["ShoppingCart"] != null)
{
HttpCookie oCookie = (HttpCookie)HttpContext.Current.Request.Cookies["ShoppingCart"];
oCookie.Expires = DateTime.Now.AddYears(3);
//Check if Cookie already contain same item
string ShoppingCartStr = oCookie.Value.ToString();
string[] arrCookie = ShoppingCartStr.Split(new char[] { ',' });
string[] arrCookie2 = new string[arrCookie.Length - 1];
int j = 0;
string NewStr = "";
for (int i = 0; i < arrCookie.Length; i++)
{
if (arrCookie[i].Trim().Remove(arrCookie[i].IndexOf(':')) != ProductID.ToString())
NewStr = NewStr + "," + arrCookie[i];
}
if (NewStr == "")
HttpContext.Current.Response.Cookies["ShoppingCart"].Value = "";
else
HttpContext.Current.Response.Cookies["ShoppingCart"].Value = NewStr.Substring(1);
}
}
public static void UpdateShoppingCart(int ProductID, int Quantity, bool box)
{
int Box = 1;
if (!box)
Box = 0;
if (HttpContext.Current.Request.Cookies["ShoppingCart"] != null)
{
bool bExists = false;
HttpCookie oCookie = (HttpCookie)HttpContext.Current.Request.Cookies["ShoppingCart"];
oCookie.Expires = DateTime.Now.AddYears(3);
string ShoppingCartStr = oCookie.Value.ToString();
string[] arrCookie = ShoppingCartStr.Split(new char[] { ',' });
//查看cookie中是否有该产品
string newCookie = "";
for (int i = 0; i < arrCookie.Length; i++)
{
if (arrCookie[i].Trim().Remove(arrCookie[i].IndexOf(':')) == ProductID.ToString().Trim())
arrCookie[i] = arrCookie[i].Trim().Remove(arrCookie[i].IndexOf(':')) + ":" + Quantity.ToString() + ":" + Box.ToString();
newCookie = newCookie + "," + arrCookie[i];
}
HttpContext.Current.Response.Cookies["ShoppingCart"].Value = newCookie.Substring(1);
}
}
public static DataTable GetShoppingCart()
{
DataTable dt = new DataTable();
if (HttpContext.Current.Request.Cookies["ShoppingCart"] != null && HttpContext.Current.Request.Cookies["ShoppingCart"].Value.Trim() != "")
{
HttpCookie oCookie = (HttpCookie)HttpContext.Current.Request.Cookies["ShoppingCart"];
oCookie.Expires = DateTime.Now.AddYears(3);
string ShoppingCartStr = oCookie.Value.ToString();
//HttpContext.Current.Response.Write(ShoppingCartStr);
string[] arrCookie = ShoppingCartStr.Split(new char[] { ',' });
//查看cookie中是否有该产品
string newCookie = "";
for (int i = 0; i < arrCookie.Length; i++)
{
newCookie = newCookie + "," + arrCookie[i].Trim().Remove(arrCookie[i].IndexOf(':'));
}
newCookie = newCookie.Substring(1);
dt = Product.GetProductByProductIds(newCookie, -1);
dt.Columns.Add("Quantity");
dt.Columns.Add("Box");
foreach (DataRow row in dt.Rows)
{
for (int i = 0; i < arrCookie.Length; i++)
{
if (arrCookie[i].Trim().Remove(arrCookie[i].IndexOf(':')) == row["ProductId"].ToString())
{
row["Quantity"] = arrCookie[i].Substring(arrCookie[i].IndexOf(":") + 1);
row["Quantity"] = row["Quantity"].ToString().Remove(row["Quantity"].ToString().IndexOf(":"));
string Box = arrCookie[i].Substring(arrCookie[i].LastIndexOf(":") + 1);
if (Box == "1")
row["Box"] = true;
else
row["Box"] = false;
}
}
}
}
else
{
dt = Database.GetDataTable("select top 0 * from View_ProductList");
dt.Columns.Add("Quantity");
}
return dt;
}
}