一步步打造自己的分页控件--3



	 

	仔细查看大型网站51aspx,上面的分页静态代码，发现类似下面的结构

	 

	

	 

	1  <div class=green>

	2 <a href="?flag=first"><span >First</span></a>

	3 <a href="?flag=pre"><span>Pre</span></a>

	4 <a href="?pager=1"><span class=current>1</span></a>

	5 <a href="?pager=2"><span>2</span></a>

	6 <a href="?pager=3"><span>3</span></a>

	7 <a href="?pager=4"><span>4</span></a>

	8 <a href="?pager=5"><span>5</span></a> 

	9 <a href="#"><span>……</span></a>

	10 <a href="?flag=next"><span>Next</span></a>

	11 <a href="?flag=last"><span>Last</span></a>

	12 <input type="text" value="1"/>

	13 <input  type="button" value="Go" onclick="go()"/></div>

	14 </div>

	仔细分析发现它们的分页方式是通过改变url传递的参数，从而动态改变当前页码，因此想到了用request.querystring方法获取传递的参数，我当时考虑到分页有文字和数字，因此用了两个参数flag,pager,然后我将代码封装在一个类文件里面，其中数字按钮是动态生成的

	先看看生成分页静态代码

	 

	 1 #region 输出分页html

	 2

	 3         /// <summary>

	 4         /// 输出的分页html

	 5         /// </summary>

	 6         /// <returns>返回字符型</returns>

	 7         public string rendHtml()

	 8         {

	 9             StringBuilder sb = new StringBuilder();

	10             sb.Append("<div class=" + cssClass + ">");

	11             sb.Append(" <a href=\"?flag=first\"><span >" + first + "</span></a>");

	12             sb.Append("<a href=\"?flag=pre\"><span>" + pre + "</span></a>");

	13             //生成第一页

	14             if (pageIndex == 1)

	15             {

	16                 sb.Append("<a href=\"?pager=1\"><span class=" + cssCurrent + ">1</span></a>");

	17                 for (int i = 1; i < numberCount; i++)

	18                 {

	19                     sb.Append("<a href=\"?pager=" + (i + 1) + "\"><span>" + (i + 1) + "</span></a>");

	20                 }

	21                 sb.Append("  <a href=\"#\"><span>……</span></a>");

	22             }

	23             //生成其他页

	24             if (pageIndex > 1 && pageIndex < pageAll)

	25             {

	26                 // int first = (pageIndex - 1) * numberCount+1;

	27                 int firstpage = pageIndex;

	28                 int j = 3;

	29                 sb.Append("<a href=\"?pager=" + firstpage + "\"><span class=" + cssCurrent + ">" + firstpage + "</span></a>");

	30

	31                 for (int i = firstpage + 1; i < firstpage + numberCount; i++)

	32                 {

	33                     sb.Append("<a href=\"?pager=" + i + "\"><span>" + i + "</span></a>");

	34                     j = j + 1;

	35                 }

	36                 sb.Append("  <a href=\"#\"><span>……</span></a>");

	37             }

	38             if (pageIndex == pageAll)//如果为最后一页

	39             {

	40                 int firstpage = pageIndex - 4;

	41                 int j = 3;

	42                 sb.Append("<a href=\"?pager=" + firstpage + "\"><span class=" + cssCurrent + ">" + firstpage + "</span></a>");

	43

	44                 for (int i = firstpage + 1; i < firstpage + numberCount; i++)

	45           &nbs

补充：Web开发 , ASP.Net ,