/// <summary>
/// 生成页码的html
/// </summary>
/// <param name="urlFormat">超链接的格式。list.ashx?pagenum={pageNum}。地址中用{pagenum}做为当前页码的占位符</param></param>
/// <param name="totalSize">总数据条数</param>
/// <param name="pageSize">每页多少条数据</param>
/// <param name="currentPage">当前页</param>
/// <returns></returns>
public static RawString Pager(string urlFormat, long totalSize,
long pageSize, long currentPage)
{
StringBuilder sb
= new StringBuilder
(); //总页数
long totalPageCount = (long)Math.Ceiling((totalSize * 1.0f) / (pageSize * 1.0f));
//当前页的前几页
long firstPage = Math.Max(currentPage - 5, 1);
//当前页的后几页
long lastPage = Math.Min(currentPage + 6, totalPageCount);
//绘制分页,首页
sb.AppendLine("<div><a href='" + urlFormat.Replace("{pageNum}", "1") + "'>首页</a>");
//绘制分页中间数据部分
for (long i = firstPage; i < lastPage; i++)
{
string url = urlFormat.Replace("{pageNum}", i.ToString());
if (i == currentPage) //点击后就不显示超链接
{
sb.AppendLine("<a>" + i + "</a>");
}
else
{
sb.AppendLine("<a href='" + url + "'>" + i + "</a>");
}
}
//显示最后一页
sb.AppendLine("<a href='" + urlFormat.Replace("{pageNum}", totalPageCount.ToString()) + "'>末页</a></div>");
return new RawString
(sb
.ToString()); }