zoukankan      html  css  js  c++  java
  • ASP.NET MVC 扩展HtmlHelper类方法

    1、扩展HtmlHelper类方法ShowPageNavigate

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    public static HtmlString ShowPageNavigate(this HtmlHelper htmlHelper, int currentPage, int pageSize, int totalCount)
           {
               var redirectTo = htmlHelper.ViewContext.RequestContext.HttpContext.Request.Url.AbsolutePath;
               pageSize = pageSize == 0 ? 3 : pageSize;
               var totalPages = Math.Max((totalCount + pageSize - 1) / pageSize, 1); //总页数
               var output = new StringBuilder();
               if (totalPages > 1)
               {               
                       output.AppendFormat("<a class='pageLink' href='{0}?pageIndex=1&pageSize={1}'>首页</a> ", redirectTo, pageSize);               
                     if (currentPage > 1)
                     {//处理上一页的连接
                         output.AppendFormat("<a class='pageLink' href='{0}?pageIndex={1}&pageSize={2}'>上一页</a> ", redirectTo, currentPage - 1, pageSize);
                     }               
      
                     output.Append(" ");
                     int currint = 5;
                     for (int i = 0; i <= 10; i++)
                     {//一共最多显示10个页码,前面5个,后面5个
                         if ((currentPage + i - currint) >= 1 && (currentPage + i - currint) <= totalPages)
                         {
                             if (currint == i)
                             {//当前页处理                           
                                 output.AppendFormat("<a class='cpb' href='{0}?pageIndex={1}&pageSize={2}'>{3}</a> ", redirectTo, currentPage, pageSize, currentPage);
                             }
                             else
                             {//一般页处理
                                 output.AppendFormat("<a class='pageLink' href='{0}?pageIndex={1}&pageSize={2}'>{3}</a> ", redirectTo, currentPage + i - currint, pageSize, currentPage + i - currint);
                             }
                         }
                         output.Append(" ");
                     }
                     if (currentPage < totalPages)
                     {//处理下一页的链接
                         output.AppendFormat("<a class='pageLink' href='{0}?pageIndex={1}&pageSize={2}'>下一页</a> ", redirectTo, currentPage + 1, pageSize);
                     }
                      
                     output.Append(" ");
                     if (currentPage != totalPages)
                     {
                         output.AppendFormat("<a class='pageLink' href='{0}?pageIndex={1}&pageSize={2}'>末页</a> ", redirectTo, totalPages, pageSize);
                     }
                     output.Append(" ");
                 }
                 output.AppendFormat("<label>第{0}页 / 共{1}页</label>", currentPage, totalPages);//这个统计加不加都行
      
                 return new HtmlString(output.ToString());
             }

     2、添加公共类PagerInfo,PageQuery

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    public class PagerInfo
         {
             public int RecordCount { getset; }
      
             public int CurrentPageIndex { getset; }
      
             public int PageSize { getset; }
         }
     
     
    public class PagerQuery<TPager, TEntityList>
        {
            public PagerQuery(TPager pager, TEntityList entityList)
            {
                this.Pager = pager;
                this.EntityList = entityList;
            }
            public TPager Pager { getset; }
            public TEntityList EntityList { getset; }
        }

     3、然后在Controller里面添加Action

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    public ActionResult Index(int? pageSize,int? pageIndex)
             {
                 int pageIndex1 = pageIndex ?? 1;
                 int pageSize1 = pageSize ?? 5;
                 int count=0;
                 //从数据库在取得数据,并返回总记录数
                 var temp = newsSer.LoadPageEntities(c => true, c => c.id, false, pageSize1, pageIndex1, out count);
                 PagerInfo pager = new PagerInfo();
                 pager.CurrentPageIndex = pageIndex1;
                 pager.PageSize = pageSize1;
                 pager.RecordCount = count;
                 PagerQuery<PagerInfo,IQueryable<news>> query = new PagerQuery<PagerInfo,IQueryable<news>>(pager,temp);
                 return View(query);
             }

     4、View里的部分代码

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    <tbody>
                             @foreach (var item in Model.EntityList)
                             {
                                 <tr>
                                     <td class="checkBox">
                                         <input name="ids[]" type="checkbox" value="" />
                                     </td>
                                     <td>
                                         @item.author
                                     </td>
                                     <td>
                                         @item.title
                                     </td>
                                     <td>
                                         @item.ctime
                                     </td>
                                     <td>
                                         @Html.ActionLink("编辑", "Edit", new { id = item.id }) |
                                         @Html.ActionLink("删除", "Delete", new { id = item.id })
                                     </td>
                                 </tr>
                             }
                             @*分页*@
                             <tr class="">
                                 <td colspan="5" align="center" class="paginator">
                                     <span>
                                         @Html.ShowPageNavigate(Model.Pager.CurrentPageIndex, Model.Pager.PageSize, Model.Pager.RecordCount)
                                     </span>
                                 </td>
                             </tr>
                         </tbody>

     5、添加一些样式

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    .paginator
     {
         font: 12px Arial, Helvetica, sans-serif;
         padding: 10px 20px 10px 0;
         margin: 0px auto;
     }
      
     .paginator a
     {
         border: solid 1px #ccc;
         color: #0063dc;
         cursor: pointer;
         text-decoration: none;
     }
      
     .paginator a:visited
     {
         padding: 1px 6px;
         border: solid 1px #ddd;
         background: #fff;
         text-decoration: none;
     }
      
     .paginator .cpb
     {
         border: 1px solid #F50;
         font-weight: 700;
         color: #F50;
         
     }
      
     .paginator a:hover
     {
         border: solid 1px #F50;
         color: #f60;
         text-decoration: none;
     }
      
     .paginator a, .paginator a:visited, .paginator .cpb, .paginator a:hover
     {
         float: left;
         height: 16px;
         line-height: 16px;
         min- 10px;
         _ 10px;
         margin-right: 5px;
         text-align: center;
         white-space: nowrap;
         font-size: 12px;
         font-family: Arial,SimSun;
         padding: 0 3px;
     }
      
     .paginator label
     {
         display:block;   
         float:left;   
     }

     6、运行,得效果图

  • 相关阅读:
    hdu 1203 I NEED A OFFER!
    数据表示范围
    1936 哪一瓶是毒药?
    注册会计师带你用Python进行探索性风险分析(一)
    网络编程1 初识网络编程
    优秀技术网站汇总:
    DNS(域名系统)
    如何查看电脑网页的源码以及编码方式的位置?
    推荐一款播放器
    我的北大之路(贺舒婷)
  • 原文地址:https://www.cnblogs.com/louby/p/4791939.html
Copyright © 2011-2022 走看看