C#分页

 1   public class PageString
 2     {
 3           /// <summary>
 4           /// 
 5           /// </summary>
 6           /// <param name="pageSize">一页多少条</param>
 7           /// <param name="currentPage">当前页</param>
 8           /// <param name="totalCount">总条数</param>
 9           /// <returns></returns>
10          public static string ShowPageNavigate(int pageSize, int currentPage, int totalCount)
11          {
12              string redirectTo = "";
13              pageSize = pageSize == 0 ? 3 : pageSize;
14              var totalPages = Math.Max((totalCount + pageSize - 1) / pageSize, 1); //总页数
15              var output = new StringBuilder();
16              if (totalPages > 1)
17              {
18                  if (currentPage != 1)
19                  {//处理首页连接
20                      output.AppendFormat("<a class='pageLink' href='{0}?pageIndex=1&pageSize={1}'>首页</a> ", redirectTo, pageSize);
21                  }
22                  if (currentPage > 1)
23                  {//处理上一页的连接
24                      output.AppendFormat("<a class='pageLink' href='{0}?pageIndex={1}&pageSize={2}'>上一页</a> ", redirectTo, currentPage - 1, pageSize);
25                  }
26                  else
27                  {
28                      // output.Append("<span class='pageLink'>上一页</span>");
29                  }
30 
31                  output.Append(" ");
32                  int currint = 5;
33                  for (int i = 0; i <= 10; i++)
34                  {//一共最多显示10个页码，前面5个，后面5个
35                      if ((currentPage + i - currint) >= 1 && (currentPage + i - currint) <= totalPages)
36                      {
37                          if (currint == i)
38                          {//当前页处理
39                              //output.Append(string.Format("[{0}]", currentPage));
40                              output.AppendFormat("<a class='cpb' href='{0}?pageIndex={1}&pageSize={2}'>{3}</a> ", redirectTo, currentPage, pageSize, currentPage);
41                          }
42                          else
43                          {//一般页处理
44                              output.AppendFormat("<a class='pageLink' href='{0}?pageIndex={1}&pageSize={2}'>{3}</a> ", redirectTo, currentPage + i - currint, pageSize, currentPage + i - currint);
45                          }
46                      }
47                      output.Append(" ");
48                  }
49                  if (currentPage < totalPages)
50                  {//处理下一页的链接
51                      output.AppendFormat("<a class='pageLink' href='{0}?pageIndex={1}&pageSize={2}'>下一页</a> ", redirectTo, currentPage + 1, pageSize);
52                  }
53                  else
54                  {
55                      //output.Append("<span class='pageLink'>下一页</span>");
56                  }
57                  output.Append(" ");
58                  if (currentPage != totalPages)
59                  {
60                      output.AppendFormat("<a class='pageLink' href='{0}?pageIndex={1}&pageSize={2}'>末页</a> ", redirectTo, totalPages, pageSize);
61                  }
62                  output.Append(" ");
63              }
64              output.AppendFormat("第{0}页 / 共{1}页", currentPage, totalPages);//这个统计加不加都行
65              return output.ToString();
66          }
67 
68     }