select.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 select : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            bind();
        }
    }
    protected void bind()
    {
        DB db1 = new DB();
        DataSet ds = new DataSet();
        string str1 = Request.QueryString["str1"].ToString().Trim();
        //取得当前页的页码
        int curpage = Convert.ToInt32(this.LabelA1.Text);
        //使用PagedDataSource类实现DataList控件的分页功能
        PagedDataSource ps = new PagedDataSource();
        //获取数据集
        ds = db1.getdatafromdb("select * from t_new where f_newtitle like '%" + str1 + "%' or f_newinfo like '%" + str1 + "%'");
        if (ds != null)
        {
            ps.DataSource = ds.Tables[0].DefaultView;
            //是否可以分页
            ps.AllowPaging = true;
            //显示的数量
            ps.PageSize = 17;
            //取得当前页的页码
            ps.CurrentPageIndex = curpage - 1;
            this.LinkButtonA1.Enabled = true;
            this.LinkButtonA2.Enabled = true;
            this.LinkButtonA3.Enabled = true;
            this.LinkButtonA4.Enabled = true;
            if (curpage == 1)
            {
                //不显示第一页按钮
                this.LinkButtonA1.Enabled = false;
                //不显示上一页按钮
                this.LinkButtonA2.Enabled = false;
            }
            if (curpage == ps.PageCount)
            {
                //不显示下一页
                this.LinkButtonA3.Enabled = false;
                //不显示最后一页
                this.LinkButtonA4.Enabled = false;
            }