products.aspx.cs

这是在visual studio环境下用C sharp语言编写的网上购物系统

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;

public partial class Default3 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
 

   void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)

    {
        System.Data.DataTable Cart = new System.Data.DataTable();
         // 生成内存数据表对象
        if (e.CommandName == "select")
        {
            if (Session["ShoppingCart"] == null)  // 定义数据表结构
            {
              Cart.Columns.Add("商品编号", typeof(int));
              Cart.Columns.Add("商品名称", typeof(string));
              Cart.Columns.Add("单元含量", typeof(string));
              Cart.Columns.Add("单价", typeof(double));
              Session["ShoppingCart"] = Cart;
          }
          Cart = (System.Data.DataTable)Session["ShoppingCart"];
          int index = Convert.ToInt32(e.CommandArgument);  //  确定点击的行
          GridViewRow row = GridView2.Rows[index];
          string bhText = row.Cells[1].Text;       // 取出列中的数据
          string mcText = row.Cells[2].Text;
          string dyText = row.Cells[4].Text;
          string djText = row.Cells[5].Text;
          int bh = int.Parse(bhText);              // 数据的类型转换
          double dj = double.Parse(djText);
          System.Data.DataRow rr = Cart.NewRow();
          rr["商品编号"] = bh;             // 将取出的数据放入数据表中
          rr["商品名称"] = mcText;
          rr["单元含量"] = dyText;
          rr["单价"] = dj;
          Cart.Rows.Add(rr);     // 将新行加入数据表中
          Session["ShoppingCart"] = Cart;  // 将数据表放入Session中
      }

    }

}