菜单主页.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;

public partial class 菜单主页 : System.Web.UI.Page
{
    DataSet Ds = new DataSet();
    string SqlStr = "";
    DB db1 = new DB();
    UserInformationDataContext db = new UserInformationDataContext();
    protected void Page_Load(object sender, EventArgs e)
    {
        string id = Request.QueryString["id"];
        string menu = Request.QueryString["me"];
        //if (id == " ")
        //{
            var results1 = from r in db.菜样信息
                          where r.菜样类型 == menu
                          select r;
            if (results1.Count() > 0)
            {
                DataList1.DataSource = results1;
                DataList1.DataKeyField = "序号";
                DataList1.DataBind();
            }
        //}
        //if (menu == " ")
        //{
            var results2 = from r in db.菜样信息
                          where r.序号 == Convert.ToInt32(id)
                          select r;
            if (results2.Count() > 0)
            {
                
                DataList1.DataSource = results2;
                DataList1.DataKeyField = "序号";
                DataList1.DataBind();
            }
       // }
        //else
        //{
        //    MessageBox.Show("请先登录", "登录.aspx");
        //}
        
       
    }
    //protected void DataList1_UpdateCommand(object source, DataListCommandEventArgs e)
    //{
    //    Response.Write("++++++++++++");
        //int id = Convert.ToInt32(this.DataList1.DataKeys[e.Item.ItemIndex]);
        ////string SqlStr1 = "select * from 订餐信息 where 用户名='" + Session["userName"] + "'";