今天完成的自定义分页控件，支持AJAX.DLL的方式支持24种分页样式

分页控件，大家应该都比较熟悉了。但是一直以来分页控件都给我一个很郁闷的地方，几乎都是URL传值，让人很郁闷。

如果我的是高级查询，里面的值有很多，那写死个人。同时对系统的请求也是一个考验。于是我写了这个分页控件。同时支持24种分页样式。

代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Web.UI.HtmlControls;

namespace MyControl
{
    [DefaultProperty("Text")]
    [ToolboxData("<{0}:DataPager runat=server></{0}:DataPager>")]
    public class DataPager : WebControl, INamingContainer, IPostBackEventHandler
    {
        public event EventHandler PagerOnclick
        {
            add
            {
                Events.AddHandler(this, value);
            }
            remove
            {
                Events.RemoveHandler(this, value);
            }
        }

        protected void _PagerClick(object sender, EventArgs e)
        {
            EventHandler hd = (EventHandler)base.Events[this];
            if (hd != null)
            {
                hd(sender, e);
            }
        }

        public void RaisePostBackEvent(string Index)
        {
            //Label lbl = (Label)this.FindControl("lbl");
            //lbl.Text += "自己的事件:" + Index;

        }
        void btn_Click(object sender, EventArgs e)
        {
            try
            {
                int pageIndex = int.Parse(((sender) as LinkButton).Text);
                this.PageIndex = pageIndex;
                _PagerClick(sender, e);
            }
            catch (Exception) { }

        }

        /// <summary>
        /// 当前页数
        /// </summary>
        public int PageIndex
        {
            get { return int.Parse(ViewState["PageIndex"] == null ? "1" : ViewState["PageIndex"].ToString()); }
            set
            {
                ViewState["PageIndex"] = value;
                CreateChildControls();
            }
        }

        /// <summary>
        /// 总的页数
        /// </summary>
        public int TotalPage
        {
            get { return int.Parse(ViewState["TotalPage"] == null ? "1" : ViewState["TotalPage"].ToString()); }
            set { ViewState["TotalPage"] = value; }
        }

        /// <summary>
        /// 总的记录数
        /// </summary>
        public int TotalRecord
        {
            get { return int.Parse(ViewState["TotalRecord"] == null ? "0" : ViewState["TotalRecord"].ToString()); }
            set { ViewState["TotalRecord"] = value; }
        }
        /// <summary>
        /// 每页数据大小
        /// </summary>
        public int PageSize
        {
            get { return int.Parse(ViewState["PageSize"] == null ? "0" : ViewState["PageSize"].ToString()); }
            set { ViewState["PageSize"] = value; }
        }
        /// <summary>
        /// 自定义说明
        /// </summary>
        public string CustomText
        {
            get { return ViewState["CustomText"] == null ? "" : ViewState["CustomText"].ToString(); }
            set { ViewState["CustomText"] = value; }
        }

        void NextPager(object send, EventArgs e)
        {
            this.PageIndex = this.PageIndex + 10 > this.TotalPage ? this.TotalPage : this.PageIndex + 10;
        }
        void PrePager(object send, EventArgs e)
        {
            this.PageIndex = this.PageIndex-10 > 1 ? this.PageIndex - 10 : 1;
        }
        void MaxPager(object send, EventArgs e)
        {
            this.PageIndex = this.TotalPage;
        }

        protected override void CreateChildControls()
        {
            this.Controls.Clear();
            HtmlGenericControl div = new HtmlGenericControl("div");
            div.Attributes.Add("class", "pagingbar");
            this.Controls.Add(div);

            HtmlGenericControl divbadoo = new HtmlGenericControl("div");
            divbadoo.Attributes.Add("class", _displayStyle);
            div.Controls.Add(divbadoo);

            int StarDisplayPage = PageIndex-4;
            int EndDisplayPage = PageIndex+5;

            if (PageIndex <= 5) 
            {
                StarDisplayPage = 1;
                EndDisplayPage = 10;
            }


            if (PageIndex>5) 
            {
                LinkButton labPrev = new LinkButton();
                labPrev.Text = "< Prev";
                labPrev.Click += PrePager;
                labPrev.CssClass = "disabled";
                divbadoo.Controls.Add(labPrev);


                LinkButton button = new LinkButton();
                button.Click += btn_Click;
                button.Text = "1";
                divbadoo.Controls.Add(button);


                Label labMore = new Label();
                labMore.Text = "...";
                divbadoo.Controls.Add(labMore);
            }
            if (PageIndex >= TotalPage-5)
            {
                StarDisplayPage = (TotalPage - 10 <= 0) ? 1:TotalPage - 10;
                EndDisplayPage = TotalPage;
            }


            for (int i = StarDisplayPage; i <= EndDisplayPage; i++)
            {
                if (i == PageIndex)
                {
                    Label labCurrent = new Label();
                    labCurrent.Text = i.ToString();
                    labCurrent.CssClass = "current";
                    divbadoo.Controls.Add(labCurrent);
                }
                else
                {
                    LinkButton button = new LinkButton();
                    button.Click += btn_Click;
                    button.Text = i.ToString();
                    divbadoo.Controls.Add(button);
                }
            }

            if (PageIndex < TotalPage - 5)
            {
                Label labOmission = new Label();
                labOmission.Text = "...";
                divbadoo.Controls.Add(labOmission);

                LinkButton btnLastPage = new LinkButton();
                btnLastPage.Text = this.TotalPage.ToString();
                btnLastPage.Click += btn_Click;
                divbadoo.Controls.Add(btnLastPage);


                LinkButton btnNextPage = new LinkButton();
                btnNextPage.Text = "Next >";
                btnNextPage.Click += NextPager;
                divbadoo.Controls.Add(btnNextPage);
            }
        }

        protected override void Render(HtmlTextWriter output)
        {
            if ((base.Site != null) && base.Site.DesignMode)
            {
                StringBuilder sb = new StringBuilder();
                sb.Append("<div id=\"pagingbar\" class=\"pagingbar\">");
                sb.Append("<div class=\"badoo\">");
                sb.Append("<span class=\"disabled\">< Prev </span>");
                sb.Append("<span class=\"current\">1</span>");
                sb.Append("<a>2</a>");
                sb.Append("<a>3</a>");
                sb.Append("<a>4</a>");
                sb.Append("<a>5</a>");
                sb.Append("<a>6</a>");
                sb.Append("<a>7</a>");
                sb.Append("<a>8</a>");
                sb.Append("<a>9</a>");
                sb.Append("...");
                sb.Append("<a>n</a>");
                sb.Append("<a> Next ></a>");
                sb.Append("</div>");
                sb.Append("</div>");

                output.Write(sb.ToString());
            }
            else
            {
                base.Render(output);
            }
        }


        private string _displayStyle
        {
            get { return ViewState["DisplayStyle"] == null ? "badoo" : ViewState["DisplayStyle"].ToString(); }
        }

        /// <summary>
        /// 设置的样式
        /// </summary>
        public DisplayStyle SelectDisplayStyle 
        {
            set 
            {
                if (ViewState["DisplayStyle"]==null)
                {
                    ViewState["DisplayStyle"] = value.ToString();
                }
            }
        }


        public string SetDisplayStyle 
        {
            set
            {
                ViewState["DisplayStyle"] = value;
            }
        } 


        public enum DisplayStyle 
        {
            digg,
            yahoo,
            meneame,
            flickr,
            sabrosus,
            pagination,
            scott,
            quotes,
            black,
            black2,
            blackRed,
            grayr,
            yellow,
            jogger,
            starcraft2,
            tres,
            megas512,
            technorati,
            youtube,
            msdn,
            badoo,
            greenBlack,
            viciao,
            yahoo2,
        }

    }
}

你可以选择手动或者自动输入样式，当两个样式都有的时候使用手动设置的样式。

同时，点击页数的事件 直接赋值 或者点击写都可以

前台调用代码如下：

  <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional"> 
            <ContentTemplate>
        
        <cc1:DataPager ID="DataPager2" runat="server"  SelectDisplayStyle="flickr"  OnPagerOnclick="DataPager1_PagerOnclick1" />
        
          <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
            </ContentTemplate>
      </asp:UpdatePanel>

CS代码：

    protected void Page_Load(object sender, EventArgs e)
    {
        if(!IsPostBack)
        {
            //this.PagingBar1 = new MyControl.PagingBar();
            this.DataPager1.PageIndex = 5;
            this.DataPager1.PageSize = 20;
            this.DataPager1.TotalPage = 30;
            this.DataPager1.TotalRecord = 500;



            this.DataPager2.PageIndex = 5;
            this.DataPager2.PageSize = 20;
            this.DataPager2.TotalPage = 30;
            this.DataPager2.TotalRecord = 500;
            //this.DataPager1.
        }
    }
  

    protected void DataPager1_PagerOnclick1(object sender, EventArgs e)
    {
        //int PageIndex = this.DataPager1.PageIndex;
        int strthisPage = DataPager2.PageIndex;   //Convert.ToInt32(((sender) as LinkButton).Text);
       // this.DataPager1.PageIndex = strthisPage;
        Label1.Text = strthisPage.ToString();


    }

对了，24种样式的命名我改了下。有几个样式带横线，我把横线去掉了。