C#自定义分页控件

C#自己写的一个自定义分页控件（源码下载，没有DEMO）

分页以前一直是用第三方分页控件AspNetPager.dll，使用起来也挺方便的，就是样式设置起来感觉不是很好，于是经理决定我们自己做一个分页控件，这个任务就交到我的手上。这个自定义分页控件是模仿58同城的分页及结合我们现在项目的需要写的。感觉比较实用，没什么亮点。

　　其实分页控件也没啥，就是生成相关的HTML代码，你需要啥HTML代码，用你的代码生成就是了，不管是AspNetPager.dll还是58同城也都是生成分页相关的HTML代码，其实就是一堆a标签，点分页的时候，分页控件所在的页面会刷新。

一：用AspNetPager.dll实现的分页

图：

 

 

<div id="ctl00_Content_AspNetPager1">
<a disabled="disabled" style="margin-right:5px;">首页</a>
<a disabled="disabled" style="margin-right:5px;">上一页</a>
<span class="al" style="margin-right:5px;">1</span>
<a href="NewsList.aspx?page=2" style="margin-right:5px;">2</a>
<a href="NewsList.aspx?page=3" style="margin-right:5px;">3</a>
<a href="NewsList.aspx?page=4" style="margin-right:5px;">4</a>
<a href="NewsList.aspx?page=5" style="margin-right:5px;">5</a>
<a href="NewsList.aspx?page=6" style="margin-right:5px;">6</a>
<a href="NewsList.aspx?page=7" style="margin-right:5px;">7</a>
<a href="NewsList.aspx?page=2" style="margin-right:5px;">下一页</a>
<a href="NewsList.aspx?page=7" style="margin-right:5px;">尾页</a>
</div>

　　二：58同城的分页

　　图：

　　

<div class="pager">
 <strong><span>1</span></strong><a href="/zufang/pn2/"><span>2</span></a>
<a href="/zufang/pn3/"><span>3</span></a>
<a href="/zufang/pn4/"><span>4</span></a>
<a href="/zufang/pn5/"><span>5</span></a>
<a href="/zufang/pn6/"><span>6</span></a>
<a href="/zufang/pn7/"><span>7</span></a>
<a href="/zufang/pn8/"><span>8</span></a>
<a href="/zufang/pn9/"><span>9</span></a>
<a href="/zufang/pn10/"><span>10</span></a>
<a href="/zufang/pn11/"><span>11</span></a>
<a href="/zufang/pn12/"><span>12</span></a>
<a class="next" href="/zufang/pn2/"><span>下一页</span></a>
</div>

　

　　三：我的分页控件　

<os:PagingControl runat="server" ID="paginglist" PageSize="4" CssCurrent="curpage"  ImgFirst="/images/index/btn_first.jpg"

ImgPrev="/images/index/btn_prev.jpg" ImgNext="/images/index/btn_next.jpg" ImgLast="/images/index/btn_end.jpg" CssClass="pagelist">

</os:PagingControl>

paginglist.RecordCount = 200;
paginglist.LoadControl();

<div class='pagelist'>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=1'><img src=/images/index/btn_first.jpg/></a>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=23'><img src=/images/index/btn_prev.jpg/></a>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=14'>14</a>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=15'>15</a>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=16'>16</a>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=17'>17</a>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=18'>18</a>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=19'>19</a>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=20'>20</a>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=21'>21</a>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=22'>22</a>
<a href='/CommonQuestion/QuestionListContent.aspx?questionTypeID=0&page=23'>23</a>
<span class=curpage>24</span>
</div>

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

//自定义分页控件
namespace ObjectCommon.Libary.Component
{
    [ToolboxData("<{0}:PagingControl runat=\"server\"></{0}:PagingControl>"), DefaultProperty("")]
    publicclass PagingControl : Literal
    {
        #region 分页属性
        privateint pageSize =10;
        publicint PageSize
        {
            set {
                if (value >0)
                {
                    pageSize = value;
                }
            }
            get { return pageSize; }
        }

        privateint pageIndex =1;
        publicint PageIndex
        {
            set
            {
                if (value >0)
                {
                    pageIndex = value;
                }
            }
            get { return pageIndex; }
        }
       
        publicint RecordCount
        {
            set;
            get;
        }

        privateint PageCount =0;
        
        //分页参数
privatestring paraName ="page";
        publicstring ParaName
        {
            set
            {
                if (value !=null&& value.Trim() !="")
                {
                    paraName = value.Trim();
                }
            }
            get {
                return paraName;
            }
        }
        #endregion

        #region Css
        //分页控件的样式
publicstring CssClass
        {
            set;
            get;
        }

        //上一页样式
publicstring CssPrev
        {
            set;
            get;
        }

        //下一页样式
publicstring CssNext
        {
            set;
            get;
        }

        //当前页样式
publicstring CssCurrent
        {
            set;
            get;
        }

        //首页样式
publicstring CssFirst
        {
            set;
            get;
        }

        //尾页样式
publicstring CssLast
        {
            set;
            get;
        }

        //其它页样式
publicstring CssOther
        {
            set;
            get;
        }
        #endregion

        #region Img
        //首页图片
publicstring ImgFirst
        {
            set;
            get;
        }

        //上一页页图片
publicstring ImgPrev
        {
            set;
            get;
        }

        //下一页页图片
publicstring ImgNext
        {
            set;
            get;
        }

        //尾页
publicstring ImgLast
        {
            set;
            get;
        }
        #endregion

        // A标签的HRef
privatestring ATargetHref
        {
            set;
            get;
        }

        //获取paraname之外的请求参数
privatevoid GetUrl()
        {
            HttpContext ctx = HttpContext.Current;
            string hostName ="http://"+ ctx.Request.Url.Host +":"+ ctx.Request.Url.Port ;
            string url = ctx.Request.Url.ToString().Substring(hostName.Length).Split('?')[0] +"?";
            StringBuilder query =new StringBuilder(url);
            foreach (string key in ctx.Request.QueryString)
            {
                if (key!=null&& key.ToLower() !=this.ParaName)
                {
                    query.Append(string.Format("{0}={1}&", key, ctx.Request.QueryString[key]));
                }
            }
            this.ATargetHref = query.ToString();
        }

        privatestring GetUrl(int pageIndex)
        {
            returnstring.Format("{0}{1}={2}", this.ATargetHref,this.paraName, pageIndex);
        }
         
        //初始化属性
privatevoid Initializtion()
        {
            GetUrl();
            this.PageCount = (this.RecordCount -1) /this.PageSize +1;
            if (!string.IsNullOrEmpty(HttpContext.Current.Request[this.ParaName]))
            {
                this.PageIndex =int.Parse(HttpContext.Current.Request[this.ParaName]);
            }
        }

        //生成控件
privatevoid LoadControl(List<Tag> divPaging)
        {
            if (divPaging ==null|| divPaging.Count ==0)
            {
                this.Text =null;
                return;
            }
            StringBuilder sb =new StringBuilder(256);
            if (this.CssClass ==null||this.CssClass.Trim() =="")
            {
                sb.Append("<div>");
            }
            else
            {
                sb.Append(string.Format("<div class='{0}'>", this.CssClass));
            }
            for (int i =0; i < divPaging.Count;i++)
            {
                if (divPaging[i] ==null)
                {
                    sb.Append(GetCurrentPage());
                }
                else
                {
                    sb.Append(divPaging[i].ToString());
                }
            }
            sb.Append("</div>");
            this.Text = sb.ToString();
        }

        privatestring GetCurrentPage()
        {
            if (this.CssCurrent ==null||this.CssCurrent.Trim() =="")
            {
                returnstring.Format("<span>{0}</span>", this.PageIndex);
            }
            else {
                returnstring.Format("<span class={0}>{1}</span>", this.CssCurrent, this.PageIndex);
            }
        }
         
        ///<summary>
        /// 加载控件
        ///</summary>
publicvoid LoadControl()
        {
            if (this.RecordCount<=this.PageSize)
            {
                this.Text =null;
            }
            else
            {
                Initializtion();
                LoadControl(AddATarget());
            }
        }
         
        #region 创建标签
        private Tag CreateATarget(string img,string css,int pageIndex,string content)
        {
            Tag a =new Tag();
            a.HRef = GetUrl(pageIndex);
            if (img ==null|| img.Trim() =="")
            {
                a.InnerHtml = content;
            }
            else {
                a.InnerHtml =string.Format("<img src={0}/>",img);
            }

            if (css !=null&& css.Trim() !="")
            {
                a.CssClass = css;
            }
            return a;
        }

    
        #endregion

        // 向集合中添加标签
private List<Tag> AddATarget()
        {
            List<Tag> divPaging =new List<Tag>();
             
            if (this.PageIndex >1)//添加上一页
            {
                divPaging.Add(CreateATarget(this.ImgFirst, this.CssFirst, 1, "首页"));//添加首页
                divPaging.Add(CreateATarget(this.ImgPrev, this.CssPrev, this.PageIndex -1, "上一页"));
            }
             
            int end =this.PageIndex +5;
            if (end <11)
            {
                end =11;
            }
            if (end >this.PageCount)
            {
                end =this.PageCount;
            }
          
            int start = end -10>0? end -10 : 1;

            for (int i = start; i <= end; i++)
            {
                if (i ==this.PageIndex)
                {
                    divPaging.Add(null);
                }
                else
                {
                    divPaging.Add(CreateATarget(null, this.CssOther, i, i.ToString()));
                }
            }

            if (this.PageIndex <this.PageCount)
            {
                divPaging.Add(CreateATarget(this.ImgNext, this.CssNext, this.PageIndex +1, "下一页"));//添加下一页
                divPaging.Add(CreateATarget(this.ImgLast, this.CssLast, this.PageCount, "尾页"));//添加尾页
            }
             
            return divPaging;
        }
 
        // 标签实体
privateclass Tag 
        {
            //链接
publicstring HRef
            {
                set;
                get;
            }

            //链接显示的内容
publicstring InnerHtml
            {
                set;
                get;
            }

            //样式
publicstring CssClass
            {
                set;
                get;
            }

            publicoverridestring ToString()
            { 
                if (this.CssClass !=null&&this.CssClass.Trim() !="")
                { 
                    this.CssClass =string.Format(" class='{0}'", this.CssClass);
                }
                returnstring.Format("<a href='{0}'{1}>{2}</a>", this.HRef, this.CssClass, this.InnerHtml);
            }
        }

    }
}

　　自定义控件注册：

　　在web.config中，节点<pages> <controls>中加入：

　　　　<add tagPrefix="os" namespace="ObjectCommon.Libary.Component" assembly="ObjectCommon.Libary"/>