C#页码导航显示及算法实现代码-巨人网络通讯

C#页码导航显示及算法实现代码

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：

复制代码代码如下:

 
/// 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：

复制代码代码如下:

 
.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：

复制代码代码如下:

 
div class="div_pagenavgation"> 
a href="?m=logpage=11"> 上一页/a> 
a href="?m=logpage=1">1/a> 
a href="?m=logpage=2">2/a> 
a href="?m=logpage=3">3/a> 
span class="dotted">.../span> 
a href="?m=logpage=9">9/a> 
a href="?m=logpage=10">10/a> 
a href="?m=logpage=11">11/a> 
span class="current">12/span> 
a href="?m=logpage=13">13/a> 
a href="?m=logpage=14">14/a> 
a href="?m=logpage=15">15/a> 
span class="dotted">.../span> 
a href="?m=logpage=27">27/a> 
a href="?m=logpage=28">28/a> 
a href="?m=logpage=29">29/a> 
a href="?m=logpage=13">下一页 >/a> 
/div> 