infolist.ascx.cs

在线图书馆

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 MyDefine_InfoList : System.Web.UI.UserControl
{
    private int _Count;//显示信息条数
    public int InfoNum
    {
        get { return _Count; }
        set { _Count = value; }
    }
    private int _PageSize;//分页每页条数
    public int PageSizeNum
    {
        get { return _PageSize;}
        set { _PageSize = value;}
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            LabelPageNo.Text = "1";
            BindToDLInfoNews();
        }
    }
    private string _KindWord;//分类显示
    public string KindWord
    {
        get { return _KindWord; }
        set { _KindWord = value; }
    }

    private void BindToDLInfoNews()
    {
        DataSet ds = new DataSet();
        InfoOperate info = new InfoOperate();
        string sRet = "";

        if (_Count == 0)
        {
            //取全部
            sRet = info.getInfoList("InfoNews", "INID", ref ds, "info", _KindWord);
        }
        else
        {
            //取前一部分
            sRet = info.getInfoList("InfoNews", "INID", ref ds, "info", _KindWord, _Count);
        }

        if (sRet == "")
        {
            if (_PageSize != 0)
            {
                //分页
                PanelPages.Visible = true;
                LBFinalPage.Visible = true;
                LBFirstPage.Visible = true;
                LBPrePage.Visible = true;
                LBNextPage.Visible = true;
                LabelTotalPage.Visible = true;
                LabelPageNo.Visible = true;
                Label1.Visible = true;
                Label2.Visible = true;
                Label3.Visible = true;
                Label4.Visible = true;


                PagedDataSource ps = new PagedDataSource();
                int PageNo = Convert.ToInt32(LabelPageNo.Text.ToString());

                ps.DataSource = ds.Tables["info"].DefaultView;
                ps.AllowPaging = true;
                ps.PageSize = _PageSize;
                ps.CurrentPageIndex = PageNo - 1;

                LBFinalPage.Enabled = true;
                LBFirstPage.Enabled = true;
                LBNextPage.Enabled = true;
                LBPrePage.Enabled = true;

                if (ps.IsFirstPage)
                {
                    //判断是否为首页
                    LBFirstPage.Enabled = false;
                    LBPrePage.Enabled = false;
                    if (ps.PageCount == 1)
                    {
                        LBFinalPage.Enabled = false;
                        LBNextPage.Enabled = false;
                    }
                }
                if (ps.IsLastPage)
                {
                    //判断是否为末页
                    LBFinalPage.Enabled = false;
                    LBNextPage.Enabled = false;
                }

                DLInfoNews.DataSource = ps;

                DLInfoNews.DataKeyField = "INID";
                DLInfoNews.DataBind();

                LabelTotalPage.Text = ps.PageCount.ToString();
            }
            else
            {
                //不分页
                PanelPages.Visible = false;
                LBFinalPage.Visible = false;
                LBFirstPage.Visible = false;
                LBPrePage.Visible = false;
                LBNextPage.Visible = false;
                LabelTotalPage.Visible = false;
                LabelPageNo.Visible = false;
                Label1.Visible = false;
                Label2.Visible = false;
                Label3.Visible = false;
                Label4.Visible = false;

                DLInfoNews.DataSource = ds.Tables["info"].DefaultView;
                DLInfoNews.DataKeyField = "INID";
                DLInfoNews.DataBind();
            }
        }
           
    }

    protected void LBFirstPage_Click(object sender, EventArgs e)
    {
        //显示首页
        LabelPageNo.Text = "1";
        BindToDLInfoNews();
    }
    protected void LBPrePage_Click(object sender, EventArgs e)
    {
        //显示上一页
        LabelPageNo.Text = Convert.ToString(Convert.ToInt32(LabelPageNo.Text.ToString()) - 1);
        BindToDLInfoNews();
    }
    protected void LBNextPage_Click(object sender, EventArgs e)
    {
        //显示下一页
        LabelPageNo.Text = Convert.ToString(Convert.ToInt32(LabelPageNo.Text.ToString()) + 1);
        BindToDLInfoNews();
    }
    protected void LBFinalPage_Click(object sender, EventArgs e)
    {
        //显示末页
        LabelPageNo.Text = LabelTotalPage.Text;
        BindToDLInfoNews();
    }
}