EditShoppingCartNum.aspx.cs

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using MyWeb.DBUtility;
using MyWeb.WebUtility;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace MyWeb
{
    public partial class EditShoppingCartNum : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                //输入框赋值
                DBHelper db = new DBHelper();
                string sql = "select * from ShoppingCart_Tbl where del=0 and id='" + Request["id"].ToString() + "'";
                DataSet ds = db.Query(sql);
                //将查询得到的数据赋值给文本框
                if (ds.Tables[0].Rows.Count > 0)
                {
                    //输入框的赋值
                    TextBox1.Text = ds.Tables[0].Rows[0]["foodsNum"].ToString();
                }
            }
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            DBHelper db = new DBHelper();
            //声明提示类
            WebHelper wb = new WebHelper();
            //非空判断
            if (TextBox1.Text == "")
            {
                wb.Alert("数量不能为空");
            }
            else
            {
                string sql = "update ShoppingCart_Tbl set foodsNum='" + TextBox1.Text + "' where del=0 and id='" + Request["id"].ToString() + "'";
                int renum = db.ExecuteSql(sql);
                if (renum == 1)
                {
                    //成功
                    wb.Alert("修改购物车数量成功！", "MyShoppingCart.aspx");
                }
                else
                {
                    //失败
                    wb.Alert("添加商品种类信息失败！");
                }
            }
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            Response.Redirect("MyShoppingCart.aspx");