C#自定义分页方法二

这个分页方法是我在一个开源项目里面找到的，拿过来给大家分享！
不说了，上代码！
  1         #region 替换指定的字符串
  2       /// <summary>
  3         /// 替换指定的字符串
  4       /// </summary>
  5         /// <param name="originalStr">原字符串</param>
  6         /// <param name="oldStr">旧字符串</param>
  7         /// <param name="newStr">新字符串</param>
  8         /// <returns></returns>
  9         public static string ReplaceStr(string originalStr, string oldStr, string newStr)
 10         {
 11             if (string.IsNullOrEmpty(oldStr))
 12             {
 13                 return "";
 14             }
 15             return originalStr.Replace(oldStr, newStr);
 16         }
 17         #endregion
 18 
 19         #region 显示分页
 20         /// <summary>
 21         /// 返回分页页码
 22         /// </summary>
 23         /// <param name="pageSize">页面大小</param>
 24         /// <param name="pageIndex">当前页</param>
 25         /// <param name="totalCount">总记录数</param>
 26         /// <param name="linkUrl">链接地址，__id__代表页码</param>
 27         /// <param name="centSize">中间页码数量</param>
 28         /// <returns></returns>
 29         public static string PagingString(int pageIndex, int pageSize, int totalCount, string linkUrl, int centSize)
 30         {
 31             //计算页数
 32             if (totalCount < 1 || pageSize < 1)
 33             {
 34                 return "";
 35             }
 36             int pageCount = totalCount / pageSize;
 37             if (pageCount < 1)
 38             {
 39                 return "";
 40             }
 41             if (totalCount % pageSize > 0)
 42             {
 43                 pageCount += 1;
 44             }
 45             if (pageCount <= 1)
 46             {
 47                 return "";
 48             }
 49             StringBuilder pageStr = new StringBuilder();
 50             string pageId = "__id__";
 51             //<li class="foo_syy">上一页</li> <li class="foo_xyy">下一页</li>
 52             string firstBtn = "<li class="foo_syy"><a href="" + ReplaceStr(linkUrl, pageId, (pageIndex - 1).ToString()) + "">上一页</a></li>";
 53             string lastBtn = "<li class="foo_xyy"><a href="" + ReplaceStr(linkUrl, pageId, (pageIndex + 1).ToString()) + "">下一页</a></li>";
 54             string firstStr = "<li class="foo_ys"><a href="" + ReplaceStr(linkUrl, pageId, "1") + "">1</a></li>";
 55             string lastStr = "<li class="foo_ys"><a href="" + ReplaceStr(linkUrl, pageId, pageCount.ToString()) + "">" + pageCount.ToString() + "</a>";
 56 
 57             if (pageIndex <= 1)
 58             {
 59                 firstBtn = "<li class="foo_syy"><span class="disabled">上一页</span></li>";
 60             }
 61             if (pageIndex >= pageCount)
 62             {
 63                 lastBtn = "<li class="foo_xyy"><span class="disabled">下一页</span></li>";
 64             }
 65             if (pageIndex == 1)
 66             {
 67                 firstStr = "<li class="foo_ys"><span class="current">1</span></li>";
 68             }
 69             if (pageIndex == pageCount)
 70             {
 71                 lastStr = "<li class="foo_ys"><span class="current">" + pageCount.ToString() + "</span></li>";
 72             }
 73             int firstNum = pageIndex - (centSize / 2); //中间开始的页码
 74             if (pageIndex < centSize)
 75                 firstNum = 2;
 76             int lastNum = pageIndex + centSize - ((centSize / 2) + 1); //中间结束的页码
 77             if (lastNum >= pageCount)
 78                 lastNum = pageCount - 1;
 79             pageStr.Append(firstBtn + firstStr);
 80             if (pageIndex >= centSize)
 81             {
 82                 pageStr.Append("<li class="foo_ys"><span>...</span></li>");
 83             }
 84             for (int i = firstNum; i <= lastNum; i++)
 85             {
 86                 if (i == pageIndex)
 87                 {
 88                     pageStr.Append("<li class="foo_ys"><span class="current">" + i + "</span></li>");
 89                 }
 90                 else
 91                 {
 92                     pageStr.Append("<li class="foo_ys"><a href="" + ReplaceStr(linkUrl, pageId, i.ToString()) + "">" + i + "</a></li>");
 93                 }
 94             }
 95             if (pageCount - pageIndex > centSize - ((centSize / 2)))
 96             {
 97                 pageStr.Append("<li class="foo_xyy"><span>...</span></li>");
 98             }
 99             pageStr.Append(lastStr + lastBtn);
100             return pageStr.ToString();
101         }
102         #endregion
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