Info.aspx.cs

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using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;


namespace 网上订餐系统.菜单
{
    public partial class Info : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Session["UserName"] != null)
            {
                //下载于www.51aspx.com
                Panel已登录.Visible = true;
                Panel未登录.Visible = false;
            }
            if (string.IsNullOrEmpty(Request.QueryString["cID"]))
            {
                this.ltl菜名.Text = "参数不存在";
                return;
            }
            int id;
            if (!int.TryParse(Request.QueryString["cID"], out id))
            {
                this.ltl菜名.Text = "参数非法";
                return;
            }

    
       
            SqlServer db = new SqlServer();
            db.SQL = "select * from 菜单表 where cID=@cID";
            db.AddSqlParameter("@cID", Request.QueryString["cID"]);
          
            DataTable dt = db.GetDataTable();
            if (dt.Rows.Count == 0)
            {
                this.ltl菜名.Text = "数据不存在。";
            }
            else
            {
                this.Image图片.ImageUrl = dt.Rows[0]["菜图片"].ToString();
                this.ltl菜名.Text = dt.Rows[0]["菜名"].ToString();
                this.ltl价格.Text = dt.Rows[0]["价格"].ToString();
                this.ltl介绍.Text = dt.Rows[0]["菜介绍"].ToString();
            }