C#页码导航显示及算法实现代码

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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：

///
/// 获取分页导航
///
/// 页码
/// 页数
/// 链接
/// HTML代码
private string GePageNavgation(int intPageIndex, int intPageCount, string strUrl)
{
StringBuilder sb = new StringBuilder("

");
if (intPageCount > 1)
{
//页码显示
if (intPageIndex == 1)
{
sb.Append(" < 上一页");
}
else if (intPageIndex > 1)
{
sb.Append("< 上一页");
}
bool Dot1 = false, Dot2 = false;
for (int i = 1; i <= intPageCount; i++)
{
if (i == intPageIndex)
{
sb.Append("" + intPageIndex.ToString() + "");
continue;
}
if (i <= 3)
{
sb.Append("" + i.ToString() + "");
continue;
}
if (intPageIndex > 7)
{
if (!Dot1)
{
sb.Append("...");
Dot1 = true;
}
}
if (i == intPageIndex - 3)
{
sb.Append("" + i.ToString() + "");
continue;
}
if (i == intPageIndex - 2)
{
sb.Append("" + i.ToString() + "");
continue;
}
if (i == intPageIndex - 1)
{
sb.Append("" + i.ToString() + "");
continue;
}
if (i == intPageIndex + 1)
{
sb.Append("" + i.ToString() + "");
continue;
}
if (i == intPageIndex + 2)
{
sb.Append("" + i.ToString() + "");
continue;
}
if (i == intPageIndex + 3)
{
sb.Append("" + i.ToString() + "");
continue;
}
if ((intPageCount - intPageIndex) > 6 && i > intPageIndex + 3)
{
if (!Dot2)
{
sb.Append("...");
Dot2 = true;
}
}
if (i > intPageCount - 3)
{
sb.Append("" + i.ToString() + "");
continue;
}
}
if (intPageIndex == intPageCount)
{
sb.Append("下一页 >");
}
else if (intPageIndex + 1 <= intPageCount)
{
sb.Append("下一页 >");
}
}
sb.Append("

");
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; 
} 