代码改变世界

简单分页的实现-硬编码

2011-03-28 17:48  撞破南墙  阅读(544)  评论(0)  编辑  收藏  举报

 

 

最终效果

image

1控制器中代码


public ActionResult List(int id) {                                                                                                                      if (id < 1  ) {
                id = 1;
            }

            //##3.1.3分页示例--后台代码
            STOA.RichModel.STOADBContainer stoadbc = new RichModel.STOADBContainer();
            IQueryable<STOA.RichModel.Role> roles =
                stoadbc.Role;
            int count = roles.Count();
            ViewData["recordCount"] = count;
            roles = roles.OrderBy(_ => _.RoleID)
                 .Skip((id - 1) * Base.Global.PageSize)//跳过的页数
                 .Take(Base.Global.PageSize);
            ViewData["msg"] = roles;//
            ViewData["currentPageIndex"] = id;
            ViewData["pageSize"] = Base.Global.PageSize;
            ViewData["pageCount"] = count / Base.Global.PageSize;//这里有问题暂时不理
            return View(roles);
        }

 

2 辅助类中的代码 

namespace System.Web.Mvc {
    public static class PagerHelper {

        /// <summary>
        /// 3.1.3分页示例--辅助类代码
        /// </summary>
        /// <param name="currentPageIndex"></param>
        /// <param name="pageSize"></param>
        /// <param name="recordCount"></param>
        /// <param name="pageCount"></param>
        /// <param name="modelname"></param>
        /// <returns></returns>
        public static string GetPager2(int currentPageIndex, int pageSize, int recordCount, int pageCount, string modelname)//(pagermode mode,string  PageModel)
        {
            StringBuilder pagerQuery = new StringBuilder();
            if (recordCount == 0) {
                return "没有符合条件的信息";
            }
            #region =============公共分页和执行操作====================
            pagerQuery.Append(" 共有<font style=\"color:blue\">" + recordCount + "</font>项");// <p>// <font style="color:#F00">
            pagerQuery.Append(" 共有 " + pageCount + "页");
            pagerQuery.Append(" 当前在第" + currentPageIndex + "页");
            if (currentPageIndex != 1)
                 pagerQuery.Append("<span id='First' ><a href='" + modelname + "" + 1 + "'>首页</span></a> ");
            if ((currentPageIndex - 1) > 0)//上页为0
                pagerQuery.Append("<span id='Pre' ><a href='" + modelname + "" + (currentPageIndex - 1) + "'>上一页</span></a>  ");
            if (currentPageIndex < pageCount)//下页 满出了
                pagerQuery.Append("<span id='Next' ><a href='" + modelname + "" + (currentPageIndex + 1) + "'>下一页</span></a>  ");
            if (currentPageIndex < pageCount)
                pagerQuery.Append("<span id='Last' ><a href='" + modelname + "" + pageCount + "'>末页</span></a>  ");
            pagerQuery.Append("   页次 <font style=\"color:red\">" + currentPageIndex + "</font>/" + pageCount + "页  " + pageSize + "项/页  ");
            if (pageCount != 0) {
                pagerQuery.Append(
                    " 转到<select id=\"PageIndex\"  onchange=\"location.href = this.options[this.selectedIndex].value;\">");
                pagerQuery.Append("<option>页面跳转</option>");
                for (int i = 1; i <= pageCount; i++) { pagerQuery.Append("<option value=\"" + modelname + i + "\">第" + i + "页</option>"); }
                pagerQuery.Append("</select>");
            }
            #endregion
            return pagerQuery.ToString();

}} 

3 页面中的代码

 
 <%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage<IEnumerable<STOA.RichModel.Role>>" %>

<!DOCTYPE html>
<html>
<head runat="server">
    <title>list</title>
</head>
<body>
    <p>
        <%: Html.ActionLink("Create New", "Create") %>
    </p>
    <%  IEnumerable<STOA.RichModel.Role> roles = ViewData["msg"] as IEnumerable<STOA.RichModel.Role>;%>
    <table>
        <tr>
            <th>
            </th>
            <th>
                Name
            </th>
            <th>
                Description
            </th>
            <th>
                CreateTime
            </th>
            <th>
                State
            </th>
        </tr>
        <% foreach (var item in roles) { %>
        <tr>
            <td>
                <%--  <%: Html.ActionLink("Edit", "Edit", new { id=item.RoleID }) %>--%>
                <a href="/Security/Role/Edit/<%=item.RoleID %>">编辑角色</a> <a href="/Security/Permission/Edit/<%=item.RoleID %>">
                    编辑权限组</a> |
                <%: Html.ActionLink("Delete", "Delete", new { id=item.RoleID }) %>
            </td>
            <td>
                <%: item.Name %>
            </td>
            <td>
                <%: item.Description %>
            </td>
            <td>
                <%: String.Format("{0:g}", item.CreateTime) %>
            </td>
            <td>
                <%: item.State %>
            </td>
        </tr>
        <% }  /* //##3.1.3分页示例--前台代码
               * (int currentPageIndex, int pageSize, int recordCount, int pageCount, string AJaxQuest,
    string PageModel) */%>
    </table>
   
    <%=( PagerHelper.GetPager2( 
 (int)ViewData["currentPageIndex"],(int)  ViewData["pageSize"],
                          (int)ViewData["recordCount"], (int)ViewData["pageCount"], "/security/role/list/"))
 
    %>
  
</body>
</html>
 
 
 
 
 
 
        }