SearchmessageList.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;
using System.Data.SqlClient;
public partial class SearchmessageList : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        this.Title = "企业产品供求信息发布网站";
        if (!IsPostBack)
        {
            gvbind();
        }
    }
    private void gvbind()
    {
        string messageName = Request.QueryString["messageName"].ToString();
        string messageTypeID = Request.QueryString["messageTypeID"].ToString();
        string SleiBieId = Request.QueryString["SleiBieId"].ToString();
        string sql = "select   *   from   messageInfo   where   1=1";
        if (messageName != "")
        {
            sql += " and   messageName   like   '%" + messageName + "%'   ";

        }
        if (messageTypeID != "0")
        {
            sql += " and   messageTypeID   ='" + messageTypeID + "'   ";
        }
        if (SleiBieId != "")
        {
            sql += " and   SleiBieId   ='" + SleiBieId + "'   ";
        }
        SqlConnection con = new SqlConnection(SqlHelper.connstring);
        con.Open();
        SqlDataAdapter sda = new SqlDataAdapter(sql, con);
        DataSet ds = new DataSet();
        sda.Fill(ds);
        PagedDataSource objPds = new PagedDataSource();
        objPds.DataSource = ds.Tables[0].DefaultView;

        objPds.AllowPaging = true;
        objPds.PageSize = 24;

        int CurPage;
        if (Request.QueryString["Page"] != null)
            CurPage = Convert.ToInt32(Request.QueryString["Page"]);
        else
            CurPage = 1;

        objPds.CurrentPageIndex = CurPage - 1;
        lblCurrentPage.Text = CurPage.ToString();
        lblSumPage.Text = objPds.PageCount.ToString();