页码导航，先看显示效果：
算法要求：
1、页数小于等于1时不显示；
2、页数大于10时，自动缩短。
具体代码如下：
/// <summary> /// 获取分页导航 /// </summary> /// <param name="intPageIndex">页码</param> /// <param name="intPageCount">页数</param> /// <param name="strUrl">链接</param> /// <returns>HTML代码</returns> private string GePageNavgation(int intPageIndex, int intPageCount, string strUrl) { StringBuilder sb = new StringBuilder("<div class=\"div_pagenavgation\">"); if (intPageCount > 1) { //页码显示 if (intPageIndex == 1) { sb.Append("<span class=\"disabled\"> < 上一页</span>"); } else if (intPageIndex > 1) { sb.Append("<a href=\"" + strUrl + (intPageIndex - 1).ToString() + "\">< 上一页</a>"); } bool Dot1 = false, Dot2 = false; for (int i = 1; i <= intPageCount; i++) { if (i == intPageIndex) { sb.Append("<span class=\"current\">" + intPageIndex.ToString() + "</span>"); continue; } if (i <= 3) { sb.Append("<a href=\"" + strUrl + i.ToString() + "\">" + i.ToString() + "</a>"); continue; } if (intPageIndex > 7) { if (!Dot1) { sb.Append("<span class=\"dotted\">...</span>"); Dot1 = true; } } if (i == intPageIndex - 3) { sb.Append("<a href=\"" + strUrl + i.ToString() + "\">" + i.ToString() + "</a>"); continue; } if (i == intPageIndex - 2) { sb.Append("<a href=\"" + strUrl + i.ToString() + "\">" + i.ToString() + "</a>"); continue; } if (i == intPageIndex - 1) { sb.Append("<a href=\"" + strUrl + i.ToString() + "\">" + i.ToString() + "</a>"); continue; } if (i == intPageIndex + 1) { sb.Append("<a href=\"" + strUrl + i.ToString() + "\">" + i.ToString() + "</a>"); continue; } if (i == intPageIndex + 2) { sb.Append("<a href=\"" + strUrl + i.ToString() + "\">" + i.ToString() + "</a>"); continue; } if (i == intPageIndex + 3) { sb.Append("<a href=\"" + strUrl + i.ToString() + "\">" + i.ToString() + "</a>"); continue; } if ((intPageCount - intPageIndex) > 6 && i > intPageIndex + 3) { if (!Dot2) { sb.Append("<span class=\"dotted\">...</span>"); Dot2 = true; } } if (i > intPageCount - 3) { sb.Append("<a href=\"" + strUrl + i.ToString() + "\">" + i.ToString() + "</a>"); continue; } } if (intPageIndex == intPageCount) { sb.Append("<span class=\"disabled\">下一页 ></span>"); } else if (intPageIndex + 1 <= intPageCount) { sb.Append("<a href=\"" + strUrl + (intPageIndex + 1).ToString() + "\">下一页 ></a>"); } } sb.Append("</div>"); return sb.ToString(); }CSS样式：
.div_pagenavgation{ margin-top:5px; line-height:20px; float:right;}.div_pagenavgation a{ float:left; text-decoration:none; color:#06F; margin-left:5px; padding-left:5px; padding-right:5px; height:20px; text-align:center; display:block; border:1px #CCC solid;}.div_pagenavgation .dotted{ float:left; }.div_pagenavgation .current{ float:left; margin-left:5px; padding-left:5px; padding-right:5px; height:20px; text-align:center; display:block; border:1px #CCC solid ; background-color:#0080C0; color:#FFF;}.div_pagenavgation .disabled{ float:left; margin-left:5px; padding-left:5px; padding-right:5px; height:20px; text-align:center; display:block; border:1px #CCC solid; color:#CCC;}
产生的HTML如下：
<div class="div_pagenavgation"><a href="?m=log&page=11">< 上一页</a><a href="?m=log&page=1">1</a><a href="?m=log&page=2">2</a><a href="?m=log&page=3">3</a><span class="dotted">...</span><a href="?m=log&page=9">9</a><a href="?m=log&page=10">10</a><a href="?m=log&page=11">11</a><span class="current">12</span><a href="?m=log&page=13">13</a><a href="?m=log&page=14">14</a><a href="?m=log&page=15">15</a><span class="dotted">...</span><a href="?m=log&page=27">27</a><a href="?m=log&page=28">28</a><a href="?m=log&page=29">29</a><a href="?m=log&page=13">下一页 ></a></div>