public string PageRender()
{
int countpage = (int)Math.Ceiling((double)CountNum / CountPerPage);
string url = UrlFormat.Replace("{&Page}", "&Page=");
StringBuilder sb = new StringBuilder();
if (countpage <= displayNum)//总页数小于要显示的标签个数
{
for (int i = 1; i <= countpage; i++)
{
if (i == CurrentPage)
{
sb.Append(i);
}
else
{
sb.Append("<a href=" + initURL(i) + ">" + i + "</a>");
}
}
}
else
{
sb.Append("<a class='doublePage' href=" + initURL(1) + ">" + "首" + "</a>");
if (CurrentPage != 1)
{
sb.Append("<a class='doublePage' href=" + initURL(CurrentPage - 1) + ">" + "前" + "</a>");
}
for (int i = 1; i <= displayNum; i++)
{
if (CurrentPage < (int)Math.Ceiling((double)displayNum / 2))
{
if (i == CurrentPage)//当前页的输出不带超键接
{
sb.Append(CurrentPage);
}
else
{
sb.Append("<a href=" + initURL(i) + ">" + i + "</a>");
}
}
else if ((int)(countpage - CurrentPage) < (int)Math.Ceiling((double)displayNum / 2))
{
if (countpage - displayNum + i == CurrentPage)//当前页的输出不带超键接
{
sb.Append(CurrentPage);
}
else
{
sb.Append("<a href=" + initURL(countpage - displayNum + i) + ">" + (countpage - displayNum + i) + "</a>");
}
}
else
{
if ((CurrentPage - (int)Math.Ceiling((double)displayNum / 2) + i) == CurrentPage)
{
sb.Append(CurrentPage);
}
else
{
sb.Append("<a href=" + initURL(CurrentPage - (int)Math.Ceiling((double)displayNum / 2) + i) + ">" + (CurrentPage - (int)Math.Ceiling((double)displayNum / 2) + i) + "</a>");
}
}
}
if (CurrentPage != countpage)
{
sb.Append("<a class='doublePage' href=" + initURL(CurrentPage + 1) + ">" + "后" + "</a>");
}
sb.Append("<a class='doublePage' href=" + initURL(countpage) + ">" + "末" + "</a>");
}
return(sb.ToString());
}
} //要显示的页面标签条数(不包括首页，前页，后页和尾页)
private string initURL(int i)
{
return(UrlFormat.Replace("{&Page}", "&Page=" + i));
}