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自己写的repeater 分页控件(附源码下载)

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 2011/8/22 11:57:06 阅读次数:5311

C#.NET我是个新手。前几天跟同事在做项目时,用了Repeater控件来实现,因为以前都是用AspNetPager。不过这样就带来一个新问题:怎么分页?Repeater没有内置的分页功能。想写个自己的分页控件,名声好听些,后来后来在网上找了一些分页功能的资料,然后就自己写了一个,功能都按我的想法做出来了。本人从事美工做.net还没有1年时间,因为主要是做美工哪位高手有何高见请及时指正,很愿意与各位交流!(欢迎拍砖)(下载地址在文章最下面!)

效果如图:

tools/pages.ascx控件前台代码

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="pages.ascx.cs" Inherits="tools_page" %>
<div class="vc clearfix">
		<p>当前第  <asp:Label ID="crpage" runat="server" Text="Label"></asp:Label>  页 / 共  <asp:Label ID="pgcount" runat="server" Text=""></asp:Label> 
		 页  总共<asp:Label ID="jlcount" runat="server" Text=""></asp:Label>条记录  </p><asp:HyperLink ID="HLfst" runat="server" CssClass="fst"></asp:HyperLink><asp:HyperLink ID="HLpre" runat="server" CssClass="pre"></asp:HyperLink>
<%= pagehtml %><asp:HyperLink ID="HLnext" runat="server" CssClass="next"></asp:HyperLink><asp:HyperLink ID="HLlst" runat="server" CssClass="lst"></asp:HyperLink>
</div>

tools/pages.ascx.cs控件后台代码

using System;
using System.Data;
using System.Web.UI.WebControls;

public partial class tools_page : System.Web.UI.UserControl
{
    public string pagehtml = "";
    public int pagenum = 5;//设置每个分组有多少页码
    int startindex = 1;//起始页码
    protected void Page_Load(object sender, EventArgs e)
    {}
    public void showthanklist(DataTable dt, Repeater Repeater1, int curpage, string cururl,string abso,int pagesize)
    {
        //分页核心代码
        PagedDataSource pagedata = new PagedDataSource();
        //DataTable dt = LoadRepeater(id.ToString());

        pagedata.DataSource = dt.DefaultView;
        pagedata.PageSize = pagesize;
        pagedata.AllowPaging = true;
        int half = 1;
        while ((half + 1) * 2 < pagenum) { half++; }
        int start = 1;
        int end = 1;

        if (curpage > pagedata.PageCount || curpage < 1) curpage = 1;
        pagedata.CurrentPageIndex = curpage - 1;
        //如果页面总数小于分组数量.
        if (pagenum >= pagedata.PageCount)
        { end = pagedata.PageCount; getPageindex(start, end, curpage, cururl, pagesize); }
        else
        {
            if (curpage - half > 0)
            {
                start = curpage - half;
                if (curpage + half > pagedata.PageCount)
                {
                    start = pagedata.PageCount - pagenum + 1;
                    end = pagedata.PageCount;
                }
                else
                    end = curpage + half;

            }
            else
            {
                start = 1;
                end = pagenum > pagedata.PageCount ? pagedata.PageCount : pagenum;
            }

            getPageindex(start, end, curpage, cururl, pagesize);
        }
        jlcount.Text = Convert.ToString(dt.Rows.Count);
        crpage.Text = Convert.ToString(curpage);
        pgcount.Text = Convert.ToString(pagedata.PageCount);
        if (pagedata.PageCount == 1) //如果只有一个分组
        {
            HLpre.CssClass = "prefalse";
            HLnext.CssClass = "nextfalse";
            HLfst.CssClass = "fstfalse";
            HLlst.CssClass = "lstfalse";
        }
        else if (curpage == pagedata.PageCount && curpage > 1)//如果当前分组是最后一个分组
        {
            HLpre.Enabled = true;
            HLnext.Enabled = false;
            HLpre.NavigateUrl = abso + cururl + "page=" + (curpage - 1);
            HLfst.Enabled = true;
            HLfst.NavigateUrl = abso + cururl + "page=1";
            HLfst.Enabled = true;
            HLfst.NavigateUrl = abso+ cururl + "page=1";
            HLnext.CssClass = "nextfalse";
            HLlst.CssClass = "lstfalse";
        }
        else if (curpage == 1 && curpage < pagedata.PageCount)
        {
            HLpre.Enabled = false;
            HLnext.Enabled = true;
            HLfst.Enabled = false;
            HLlst.Enabled = true;
            HLlst.NavigateUrl = abso + cururl + "page=" + Convert.ToString(pagedata.PageCount);
            HLnext.NavigateUrl = abso + cururl + "page=" + (curpage + 1);
            HLfst.CssClass = "fstfalse";
            HLpre.CssClass = "prefalse";
        }
        if (curpage > 1 && curpage < pagedata.PageCount)//如果当前分组处在中间
        {
            HLpre.Enabled = true;
            HLpre.NavigateUrl = abso + cururl + "page=" + (curpage - 1);
            HLnext.NavigateUrl = abso + cururl + "page=" + (curpage + 1);
            HLnext.Enabled = true;
            HLfst.Enabled = true;
            HLfst.NavigateUrl = abso + cururl + "page=1";
            HLlst.Enabled = true;
            HLlst.NavigateUrl = abso + cururl + "page=" + Convert.ToString(pagedata.PageCount);
        }
        Repeater1.DataSource =  pagedata;
        Repeater1.DataBind();
    }
    //设置分页样式
    private void getPageindex(int start, int end, int curpage,string cururl,int pagesize)
    {
        pagehtml = "";
        for (int i = start; i <= end - 1; i++)
        {
            if (curpage == i) { pagehtml += "<b href=‘" + cururl + "page=" + Convert.ToString(i + startindex - 1) + "‘ class=‘aa" + Convert.ToString(i + startindex - 1) + "‘>" + Convert.ToString(i + startindex - 1) + "</b>"; }
            else
                pagehtml += "<a href=‘" + cururl + "page=" + Convert.ToString(i + startindex - 1) + "‘ class=‘a" + Convert.ToString(i + startindex - 1) + "‘>" + Convert.ToString(i + startindex - 1) + "</a>";

        }
        if (curpage == end) { pagehtml += "<b id=‘lastid‘ href=‘" + cururl + "page=" + Convert.ToString(end + startindex - 1) + "‘ class=‘aa" + Convert.ToString(end + startindex - 1) + "‘>" + Convert.ToString(end + startindex - 1) + "</b>"; }
        else
        {
            pagehtml += "<a id=‘lastid‘ href=‘" + cururl + "page=" + Convert.ToString(end + startindex - 1) + "‘ class=‘a" + Convert.ToString(end + startindex - 1) + "‘>" + Convert.ToString(end + startindex - 1) + "</a>";
        }
    } 
}

DEMO.aspx前台代码

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DEMO.aspx.cs" Inherits="DEMO" %>
<%@ Register Src="tools/pages.ascx" TagName="pages" TagPrefix="uc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>我的分页控件-幸凡在线学习网</title>
    <link href="css/index.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <form id="form1" runat="server">
    <div class="com">
        <ul>
            <asp:Repeater ID="art_list" runat="server">
                <ItemTemplate>
                    <li>
                        <a href="http://www.86y.org/art_detail.aspx?id=<%# Eval("id") %>" title="<%# Eval("title") %>"><%# Eval("title") %></a>
                    </li>
                </ItemTemplate>
            </asp:Repeater>
        </ul>
        <uc1:pages ID="pages1" runat="server" />
        </div>
    </form>
</body>
</html>

DEMO.aspx.cs后台代码

using System;
using System.Data;
using System.Data.OleDb;
public partial class DEMO : System.Web.UI.Page
{
    string cururl = "DEMO.aspx?";//当前页面链接
    public int curpage = 0;//初始页
    public int pagesize = 10; //设置每页显示多少条记录
    protected void Page_Load(object sender, EventArgs e)
    {
        //获取当前页码
        if (!this.IsPostBack)
        {
            if (Request.Params["page"] == null)
                curpage = 1;
            else
            {
                string temp = Request.Params["page"].ToString();
                curpage = Convert.ToInt32(temp);
            }

        }
        DataTable dt = art_table();
        //showthanklist(DataTable dt, Repeater Repeater1, int curpage, string cururl,string abso,int pagesize)使用方法
        //dt:是DatatTable,art_list:前台显示Repeater的ID,curpage:当前页,cururl:当前页面的链接,abso:相对于tools里面的使用路径因为是在根目录调用所以需要加../,pagesize:每页显示多少条
        pages1.showthanklist(dt, art_list, curpage, cururl, "../", pagesize);
    }
    //查出所有文章数据
    public DataTable art_table()
    {
        string sql="";            
         sql = "select * from art order by id desc";
        DataTable btab = selects(sql);
        return btab;
    }
    //创建数据库链接
    public OleDbConnection GetConnection()
    {
        try
        {
            OleDbConnection myconn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\\#ex.mdb;Jet OLEDB:Database Password=");
            myconn.Open();
            return myconn;
        }
        catch (System.Data.OleDb.OleDbException e)
        {
            string aa = e.Message;
            return null;
        }
    }
    //查询记录
    public DataTable selects(string sql)
    {
        OleDbCommand sc = new OleDbCommand(sql, GetConnection());
        OleDbDataAdapter ad = new OleDbDataAdapter(sc);
        DataSet ds = new DataSet();
        ad.Fill(ds);
        ad.Dispose();
        if (sc.Connection.State != ConnectionState.Closed)
            sc.Connection.Close();
        sc.Dispose();
        return ds.Tables[0];
    }
}

源码下载地址链接: http://pan.baidu.com/s/1pKAAHFd 密码: jwvf


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