.NET 纯分页代码实例

<div class="mydiv"   style="width:100%;height:180px;background-color:#f0f7ff">

             <div style="margin-left:10px;">

                   <div style="background-color:#DAEBFF"><span style=" font-size: normal; font-weight: bolder">即将过期账册提醒>></span></div>

                   <div style="margin-left:10px;">

                       <asp:ScriptManager ID="ScriptManager1" runat="server">

                       </asp:ScriptManager>

                           <asp:UpdatePanel ID="UpdatePanel1" runat="server">

                               <ContentTemplate>

                                    <asp:Repeater ID="repZC" runat="server">

    <HeaderTemplate>

      <table border="1"   cellpadding="0" cellspacing="0" style="color:#0066cc;width:95%;border-collapse:collapse; text-align:center; font-size: normal">

      <tr>

        <td style="background-color:#cccccc; font-weight:bold;">账册名称</td>

        <td style="background-color:#cccccc; font-weight:bold;">经营单位</td>

        <td style="background-color:#cccccc; font-weight:bold;color: #FF0000;">距过期天数</td>

      </tr>

    </HeaderTemplate>

    <ItemTemplate>

      <tr>

        <td><%# DataBinder.Eval(Container.DataItem, "ems_no")%></td>

        <td><%# DataBinder.Eval(Container.DataItem, "TRADE_NAME")%></td>

        <td style="color: #FF0000;"><%# DataBinder.Eval(Container.DataItem, "days")%></td>

      </tr>

    </ItemTemplate>

    <%--AlternatingItemTemplate描述交替输出行的另一种外观--%>

    <AlternatingItemTemplate>

      <tr bgcolor="#e8e8e8">

        <td><%# DataBinder.Eval(Container.DataItem, "ems_no")%></td>

        <td><%# DataBinder.Eval(Container.DataItem, "TRADE_NAME")%></td>

        <td style="color: #FF0000;"><%# DataBinder.Eval(Container.DataItem, "days")%></td>

      </tr>

    </AlternatingItemTemplate>

    <FooterTemplate>

     </table>

    </FooterTemplate>

                       </asp:Repeater>

       <div style="margin-right:10px">

            <asp:LinkButton ID="lbFirst" runat="server"  style="color:#0066cc;text-decoration:none; font-size: normal"  CommandArgument="F" OnCommand="lbPage_Command">首页</asp:LinkButton>

            <asp:LinkButton ID="lbPre" runat="server"  style="color:#0066cc;text-decoration:none; font-size: normal" CommandArgument="P"  OnCommand="lbPage_Command">上页</asp:LinkButton>

            <asp:LinkButton ID="lbNext" runat="server"  style="color:#0066cc;text-decoration:none; font-size: normal" CommandArgument="N"  OnCommand="lbPage_Command">下页</asp:LinkButton>

            <asp:LinkButton ID="lbLast" runat="server"  style="color:#0066cc;text-decoration:none; font-size: normal" CommandArgument="L"  OnCommand="lbPage_Command">末页</asp:LinkButton>

            &nbsp;

            <asp:Label ID="lbTip" style="color:#0066cc;text-decoration:none; font-size: normal"  runat="server" Text="Label"></asp:Label>

        </div>        

                               </ContentTemplate>

                           </asp:UpdatePanel>

                   </div>

              </div>

             </div>

[Serializable]
    public class Pager

    {

        public int totalRecords;

        public int pageSize;

        public int pageIndex;

        public int totalPages;

    }

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using InfoSoftGlobal;

using System.Data;

using DCIS.Persistence;

using DCIS.JDXT.Data;

using System.IO;

public partial class COMMON_FirstPage : System.Web.UI.Page

{

    DCIS.Web.WebUserInfo CurrentUser = new DCIS.Web.WebUserInfo();

    protected void Page_Load(object sender, EventArgs e)

    {

        Pager pager = new Pager();

        CurrentUser = (DCIS.Web.WebUserInfo)Session["CurrentUser"];

        if (!IsPostBack)

        {

            BindDoc();

            object o = DBUtil.ExecuteScalarAt("SQLCOM", "select count(1) from dbo.EMS_PTS_HEAD where DECLARE_CODE='" + CurrentUser.Extends["AGENT_CODE"].ToString() + "' and datediff(day,end_Date,getdate()) between 0 and 7");

            pager.totalRecords = o == null ? 0 : Convert.ToInt32(o);//总记录数

            pager.pageSize = 5;//页大小

            pager.pageIndex = 0;//当前页码

            if (pager.totalRecords == 0)

            {

                pager.totalPages = 0;

            }

            else

            {

                pager.totalPages = pager.totalRecords / pager.pageSize + (pager.totalRecords % pager.pageSize == 0 ? 0 : 1)-1;//总页数

            }

            ViewState["pager"] = pager;

            litChart.Text = CreatChart();

            bindZC(pager.pageIndex, pager.pageSize);

            viewLB(pager);

        }

    }

            private void bindZC(int pageIndex,int pageSize) {

        string strSQL = @"select EMS_NO,TRADE_NAME,datediff(day,end_Date,getdate()) DAYS from dbo.EMS_PTS_HEAD where DECLARE_CODE='" + CurrentUser.Extends["AGENT_CODE"].ToString() + "' and datediff(day,end_Date,getdate()) between 0 and 7";

        PageSpliter pageSpliter = new PageSpliter(strSQL, ""/*在此配置排序子句*/, "SQLCOM");

        pageSpliter.PageSize = pageSize;

        strSQL = pageSpliter.GetPageSQL(pageIndex);

        strSQL +=" order by days ";

        DataTable dt = DBUtil.FillAt("SQLCOM", strSQL);

        repZC.DataSource = dt;

        repZC.DataBind();

    }

    public void lbPage_Command(object sender, CommandEventArgs e)

    {

       Pager pager =ViewState["pager"] as Pager ;

        string para = e.CommandArgument.ToString();

        //首页

        if (para == "F") {

            pager.pageIndex = 0;

        }

        //前一页

        if (para == "P")

        {

            pager.pageIndex = pager.pageIndex-1;

        }

        //下一页

        if (para == "N")

        {

            pager.pageIndex = pager.pageIndex+1;

        }

        //尾页

        if (para == "L")

        {

            pager.pageIndex = pager.totalPages;

        }

        bindZC(pager.pageIndex, pager.pageSize);

        viewLB(pager);

        ViewState["pager"] = pager;

    }

    private void viewLB(Pager pager)

    {

        lbFirst.Enabled = true;

        lbLast.Enabled = true;

        lbPre.Enabled = true;

        lbNext.Enabled = true;

        if (pager.totalPages == 0)

        {

            lbFirst.Enabled = false;

            lbLast.Enabled = false;

            lbPre.Enabled = false;

            lbNext.Enabled = false;

        }

        if (pager.pageIndex == 0)

        {

            lbFirst.Enabled = false;

            lbPre.Enabled = false;

        }

        if (pager.totalPages == pager.pageIndex)

        {

            lbLast.Enabled = false;

            lbNext.Enabled = false;

        }

        lbTip.Text = pager.pageIndex + 1 + "/" + (pager.totalPages + 1) + "页";

    }

    /// <summary>

    /// 绑定文档

    /// </summary>

    private void BindDoc() {

        DataTable dt = DBUtil.FillAt("SQLCOM"," select * from COM_FileUpload WHERE DESCRIBE='Index'");

        repMD.DataSource = dt;

        repMD.DataBind();

    }

    public void DownFile_Command(object sender, CommandEventArgs e)

    {

        string para = e.CommandArgument.ToString();

        string serverfilpath=Server.MapPath("../" + para.Split('$')[0]);

        if (!File.Exists(serverfilpath))

        {

            Page.ClientScript.RegisterStartupScript(GetType(), "", "<script>alert('你要下载的文件已经不存在!');</script>");

            return;

        }

        ToDownload(serverfilpath,para.Split('$')[1]);

    }

    public static void ToDownload(string serverfilpath, string filename)

    {

        FileStream fileStream = new FileStream(serverfilpath, FileMode.Open);

        long fileSize = fileStream.Length;

        HttpContext.Current.Response.ContentType = "application/octet-stream";

        HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=\"" + UTF_FileName(filename) + "\";");

        ////attachment --- 作为附件下载

        ////inline --- 在线打开

        HttpContext.Current.Response.AddHeader("Content-Length", fileSize.ToString());

        byte[] fileBuffer = new byte[fileSize];

        fileStream.Read(fileBuffer, 0, (int)fileSize);

        HttpContext.Current.Response.BinaryWrite(fileBuffer);

        fileStream.Close();

        HttpContext.Current.Response.End();

    }

    private static string UTF_FileName(string filename)

    {

        return HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8);

    }

}