308 lines
14 KiB
C#
308 lines
14 KiB
C#
using System;
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using System.Security.Cryptography;
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using System.IO;
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using System.Text;
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using System.Web;
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using System.Data;
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using System.Data.SqlClient;
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namespace Mtxfw.DAL
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{
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//公共函数
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public class ShoppingCart2
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{
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static user_Goods daoGoods = new user_Goods();
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static order_info daoorder = new order_info();
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public static int TotalNum(HttpContext context)
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{
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int intTotalNum = 0;
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if(context.Request.Cookies["0x120xxx2"]!=null)
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{
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HttpCookie myCookie = context.Request.Cookies["0x120xxx2"];
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string strCookie=myCookie.Value;
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string[] strACookie;
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strACookie=strCookie.Split('|');
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intTotalNum = 0;
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for(int i=0;i<strACookie.LongLength-1;i++)
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{
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string[] strA=strACookie[i].Split(',');
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if (strA.LongLength == 2)
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{
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if (strA[1] != "")
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{
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intTotalNum = intTotalNum + Convert.ToInt32(strA[1]);
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}
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}
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}
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}
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return intTotalNum;
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}
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//该过程用来返回购物车中的所有商品，注意，这里是将HashTable中的数据转换到了一个DataTable中，最后返回一个DataView对象
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//转换成DataTable的原因是为了显示购物车时方便的帮定到DataGrid控件
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public static DataView Getprod(HttpContext context)
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{
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//从Cookie中获取购物车中的货物栏目信息
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DataTable dt=new DataTable();
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if (context.Request.Cookies["0x120xxx2"] != null)
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{
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HttpCookie myCookie = context.Request.Cookies["0x120xxx2"];
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string strCookie=myCookie.Value;
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if (strCookie.Trim() != "")
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{
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string[] strACookie;
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dt = new DataTable("0x120xxx2");
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strACookie = strCookie.Split('|');
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dt = new DataTable("0x120xxx2"); //声明并建立DataTable对象，表的名称为 Books
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DataColumn dc; //声明DataColumn对象变量
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DataRow dr; //声明DataRow对象变量
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//下面开始建立表格的结构
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//建立第0列,商品编号id
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dc = new DataColumn("id", System.Type.GetType("System.Int32"));
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dt.Columns.Add(dc);
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//建立第1列,商品名称prodName
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dc = new DataColumn("prodName", System.Type.GetType("System.String"));
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dt.Columns.Add(dc);
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//建立第2列,商品图片prodimg
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dc = new DataColumn("prodimg", System.Type.GetType("System.String"));
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dt.Columns.Add(dc);
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//建立第3列,商品IDprodid
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dc = new DataColumn("prodid", System.Type.GetType("System.String"));
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dt.Columns.Add(dc);
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//建立第4列,商品单价prodPrice
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dc = new DataColumn("prodPrice", System.Type.GetType("System.Double"));
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dt.Columns.Add(dc);
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//建立第4列,商品PVprodPrice2
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dc = new DataColumn("prodPrice2", System.Type.GetType("System.Double"));
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dt.Columns.Add(dc);
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//建立第5列,购商品数量prodNum
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dc = new DataColumn("prodNum", System.Type.GetType("System.Int32"));
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dt.Columns.Add(dc);
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//建立第6列,购商品请允许购买数量TotalNum
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dc = new DataColumn("TotalNum", System.Type.GetType("System.Int32"));
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dt.Columns.Add(dc);
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//建立第7列，这是一个计算列，为商品的价格 * 商品数量
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dc = new DataColumn("SubTotal", System.Type.GetType("System.Double"), "prodPrice*prodNum");
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dt.Columns.Add(dc);
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//建立第7列，这是一个计算列，为商品的PV * 商品数量
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dc = new DataColumn("SubTotal2", System.Type.GetType("System.Double"), "prodPrice2*prodNum");
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dt.Columns.Add(dc);
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//建立第8列，这是一个计算列，为是否买家承担运费
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dc = new DataColumn("IFMJCDYH", System.Type.GetType("System.String"));
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dt.Columns.Add(dc);
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//建立第9列，这是一个计算列，为商品运费1
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dc = new DataColumn("SPYH1", System.Type.GetType("System.String"));
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dt.Columns.Add(dc);
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//建立第10列，这是一个计算列，为商品运费2
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dc = new DataColumn("SPYH2", System.Type.GetType("System.String"));
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dt.Columns.Add(dc);
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//建立第11列，这是一个计算列，为商品运费3
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dc = new DataColumn("SPYH3", System.Type.GetType("System.String"));
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dt.Columns.Add(dc);
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//建立第12列,商品所有者
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dc = new DataColumn("SUserID", System.Type.GetType("System.String"));
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dt.Columns.Add(dc);
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//下面根据HashTable中的商品栏目信息添加每一行
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if (strACookie.LongLength > 0)
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{
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for (int i = 0; i < strACookie.Length - 1; i++)
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{
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//逐行赋值
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string[] strA = strACookie[i].Split(',');
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if (strA.Length == 2)
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{
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dr = dt.NewRow(); //新建1行，注意和新建列的区别
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if (strA[0] != "")
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{
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dr["id"] = strA[0]; //商品编号
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//context.Response.Write(strA[0]);
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Mtxfw.Model.user_Goods ModelGoods = daoGoods.GetModel(int.Parse(strA[0]));
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if (ModelGoods != null)
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{
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dr["prodName"] = ModelGoods.GoodsName; //返回商品名称
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dr["prodimg"] = ModelGoods.GoodsPic; //返回商品名称
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dr["prodid"] = ModelGoods.Id; //返回商品名称
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dr["SUserID"] = 0; //返回商品所有者
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dr["TotalNum"] = 10000; //返回商品剩余数量
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dr["prodPrice"] = ModelGoods.GoodsPrices;//返回商品折扣价格
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dr["prodPrice2"] = ModelGoods.GoodsPrices2;//返回商品折扣价格
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string[] strAuthor = "1|0|0|0".Split('|');; //返回商品运费
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dr["IFMJCDYH"] = strAuthor[0];
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dr["SPYH1"] = strAuthor[1];
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dr["SPYH2"] = strAuthor[2];
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dr["SPYH3"] = strAuthor[3];
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}
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//dv.Table.Clear();
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}
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dr["prodNum"] = 0;
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if (strA[1] != "")//商品数量
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{
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dr["prodNum"] = Convert.ToInt32(strA[1]);
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}
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dt.Rows.Add(dr); //将该行加到表dt中
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}
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}
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}
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}
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//返回函数值，注意返回的是DataView
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}
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return dt.DefaultView;
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}
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//该函数用来判断该商品是否已经在购物车中
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public static bool IsExist(HttpContext context,string strProdId)
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{
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//从Cookie中获取购物车中的货物栏目信息
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string strCookie = "";
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bool b = false;
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if (context.Request.Cookies["0x120xxx2"] != null)
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{
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HttpCookie myCookie = context.Request.Cookies["0x120xxx2"];
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strCookie = myCookie.Value;
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}
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string[] strACookie = strCookie.Split('|');
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if (strACookie.LongLength > 0)
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{
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for (int i = 0; i < strACookie.Length - 1; i++)
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{
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string[] strA = strACookie[i].Split(',');
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if (strA.Length == 2)
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{
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if (strA[0] != "")
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{
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if (strA[0] == strProdId)
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{
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b = true; //表示该商品已经存在
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}
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}
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}
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}
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}
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return b;
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}
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//向购物车中添加一商品，如果该商品已经存在，只要修改数量即可，如果不存在，则需要添加一项
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public static void Addprod(HttpContext context, string strProdId, int num)
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{
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//从Cookie中获取购物车中的货物栏目信息
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string[] AProdId = strProdId.Split(',');
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for (int j = 0; j < AProdId.Length; j++)
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{
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string strCookie = "";
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if (AProdId.Length > 0)
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{
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if (AProdId[j] != "")
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{
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HttpCookie myCookie = new HttpCookie("0x120xxx2");
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if (IsExist(context, AProdId[j]))
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{
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if (context.Request.Cookies["0x120xxx2"] != null)
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{
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myCookie = context.Request.Cookies["0x120xxx2"];
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strCookie = myCookie.Value;
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string[] strACookie;
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strACookie = strCookie.Split('|');
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//下面根据HashTable中的商品栏目信息添加每一行
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for (int i = 0; i < strACookie.Length - 1; i++)
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{
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string[] strA = strACookie[i].Split(',');
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if (strA.Length == 2)
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{
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if (strA[0] != "")
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{
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if (strA[0] == AProdId[j])
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{
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strCookie = strCookie.Replace(strA[0] + "," + strA[1], strA[0] + "," + (Convert.ToInt32(strA[1]) + num).ToString());
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}
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}
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}
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}
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}
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}
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else
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{
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if (context.Request.Cookies["0x120xxx2"] != null)
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{
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myCookie = context.Request.Cookies["0x120xxx2"];
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strCookie = myCookie.Value;
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}
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strCookie += AProdId[j] + ",1|";
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}
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//最后将新的购物栏目信息保存到Cookie中
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myCookie.Value = strCookie;
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myCookie.Expires = DateTime.Now.AddYears(1);
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context.Response.Cookies.Add(myCookie);
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}
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}
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}
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}
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//更改购物车中的货物数量
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public static void UpdateProd(HttpContext context, string strProdId, string intprodNum)
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{
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HttpCookie myCookie = new HttpCookie("0x120xxx2");
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//从Cookie中获取购物车中的货物栏目信息
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string[] AProdId = strProdId.Split(',');
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for (int j = 0; j < AProdId.Length; j++)
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{
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string strCookie = "";
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if (AProdId.Length > 0)
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{
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if (AProdId[j] != "")
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{
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if (context.Request.Cookies["0x120xxx2"] != null)
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{
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myCookie = context.Request.Cookies["0x120xxx2"];
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strCookie = myCookie.Value;
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string[] strACookie;
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strACookie = strCookie.Split('|');
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for (int i = 0; i < strACookie.Length - 1; i++)
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{
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//下面更改数量
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string[] strA = strACookie[i].Split(',');
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if (strA.Length == 2)
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{
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if (strA[0] != "")
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{
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if (strA[0] == AProdId[j])
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{
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if (intprodNum == "" || intprodNum == "0")
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{
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strCookie = strCookie.Replace(strACookie[i] + "|", "");
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}
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else
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{
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strCookie = strCookie.Replace(strA[0] + "," + strA[1] + "|", strA[0] + "," + intprodNum + "|");
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}
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}
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}
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}
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}
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}
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//最后将新的购物栏目信息保存到Cookie中
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myCookie.Value = strCookie;
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myCookie.Expires = DateTime.Now.AddYears(1);
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context.Response.Cookies.Add(myCookie);
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}
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}
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}
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}
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}
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}
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