代码

public class Pager    {        #region property        /// 
        /// 每一页的数据条数        /// 
        public int PageSize { get; set; }        /// 
        /// 总数据条数        /// 
        public int TotalCount { get; set; }        /// 
        /// 最多显示的页码数        /// 
        public int MaxPagerCount { get; set; }        /// 
        /// 当前页（从1开始）        /// 
        public int PageIndex { get; set; }        /// 
        /// 拼接Html链接的格式，约定页码占位符{pn}        /// 例如： "/Role/List?pageIndex={pn}"        /// 
        public string UrlPattern { get; set; }        /// 
        /// 当前页码的样式名称        /// 
        public string CurrentPageClassName { get; set; }         #endregion        public string GetPagerHtml()        {            if (TotalCount <= PageSize)               return null;                        StringBuilder sb = new StringBuilder();            //ToDo:上一页，下一页，首页，末页 ，跳转页            //总页数            int pageCount = (int)Math.Ceiling(TotalCount * 1.0f / PageSize);            //显示页码的 起始 页码            int startPageIndex = Math.Max(1, PageIndex - MaxPagerCount / 2);            //显示页码的 结束 页码            int endPageIndex = Math.Min(pageCount, startPageIndex + MaxPagerCount - 1);            sb.Append("
     
      ");            for (int i = startPageIndex; i <= endPageIndex; i++)            {                if (i == PageIndex)                {                    sb.AppendFormat("
      
{1}
", CurrentPageClassName, i);                }                else                {                    string href = UrlPattern.Replace("{pn}", i.ToString());                    sb.AppendFormat("
      
{1}
", href, i);                }            }            sb.Append("
     
");            return sb.ToString();        }    }