xllist.aspx.cs

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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 xllist : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            string sql;
            if (!IsPostBack)
            {
                lb.Items.Add("所有");
                //string sql;
                sql = "select * from alllb order by id desc";
                getdata2(sql);

                if (Request.QueryString["lb"] == null)
                {

                    sql = "select * from allpro where 1=1";
                }
                else
                {
                    if (Request.QueryString["lb"].ToString().Trim() == "")
                    {
                        sql = "select * from allpro where 1=1";
                    }
                    else
                    {
                        if (Request.QueryString["lb"].ToString().Trim() == "所有")
                        {
                            sql = "select * from allpro where 1=1";
                        }
                        else
                        {
                            sql = "select * from allpro where lb like '%" + Request.QueryString["lb"].ToString().Trim().Substring(0, 2) + "%'";
                        }
                    }
                }
                if (Request.QueryString["pn"] == null)
                {

                }
                else
                {
                    if (Request.QueryString["pn"].ToString().Trim() != "")
                    {
                        sql = sql + " and mc like '%" + Request.QueryString["pn"].ToString().Trim() + "%'";
                    }
                }
                sql = sql + " order by id desc";