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实战MvcPager(PagerOptions自定义样式&同、异步)
ASP.NET MVC下的分页控件MvcPager用起来简直太嗨呸了,两句代码实现一个分页,而且需要改变样式的时候直接构造PagerOptions类
实战无需多说,拿来用之即可。个人觉得对性能影响不大的东西,如果不是感受其编码思想,只需了解使用功能,无需深入,就和人的生命本来就有限,取舍也因人而异
一、首先是简单拼接字符串的分页CssPager,直接改八改八样式和字符串就能用了
封装好的Html扩展方法:
/// <summary> /// 分页 /// </summary> /// <param name="htmlhelper"></param> /// <param name="pageSize"></param> /// <param name="currentPage"></param> /// <param name="totalCount"></param> /// <param name="href"></param> /// <returns></returns> public static string GetPager(this HtmlHelper htmlhelper, int pageSize, int currentPage, int totalCount, string href) { pageSize = pageSize == 0 ? 3 : pageSize; var totalPages = Math.Max((totalCount + pageSize - 1) / pageSize, 1); //总页数 var output = new StringBuilder(); if (totalPages > 1) { if (currentPage != 1) {//处理首页连接 output.AppendFormat("<li><a class=‘news_next3‘ href=http://www.mamicode.com/‘{0}pageIndex=1&pageSize={1}‘>首页", href, pageSize); } else { output.Append("<li><a class=‘news_next3‘ style=‘cursor:default;background-color:#C4C4C4;‘ href=‘javascript:void(0)‘>首页</a></li> "); } if (currentPage > 1) {//处理上一页的连接 output.AppendFormat("<li><a class=‘news_next3‘ href=http://www.mamicode.com/‘{0}pageIndex={1}&pageSize={2}‘> ? ", href, currentPage - 1, pageSize); } else { output.Append("<li><a class=‘news_next3‘ style=‘cursor:default;background-color:#C4C4C4;‘ href=‘javascript:void(0)‘> ? </a></li> "); } output.Append(" "); int start = 0, end = 0, tmpStart = 0, tmpEnd = 0; if (currentPage >= 1 && currentPage - 2 >= 1) { start = currentPage - 2; } else if (currentPage >= 1 && currentPage - 2 < 1) { start = 1; tmpEnd = 2 - currentPage + 1; } if (totalPages >= currentPage && currentPage + 2 <= totalPages) { end = currentPage + 2; } else if (totalPages >= currentPage && currentPage + 2 > totalPages) { end = totalPages; tmpStart = (currentPage + 2) - totalPages; } start = start - tmpStart < 1 ? 1 : start - tmpStart; end = end + tmpEnd > totalPages ? totalPages : end + tmpEnd; for (int i = start; i <= end; i++) { if (currentPage != i) { output.AppendFormat("<li><a class=‘news_next3‘ href=http://www.mamicode.com/‘{0}pageIndex={1}&pageSize={2}‘>{3}", href, i, pageSize, i); } else { output.AppendFormat("<li><a class=‘news_next2‘ href=http://www.mamicode.com/‘{0}pageIndex={1}&pageSize={2}‘>{3}", href, i, pageSize, i); } } if (currentPage < totalPages) {//处理下一页的链接 output.AppendFormat("<li><a class=‘news_next3‘ href=http://www.mamicode.com/‘{0}pageIndex={1}&pageSize={2}‘> ? ", href, currentPage + 1, pageSize); } else { output.Append("<li><a class=‘news_next3‘ style=‘cursor:default;background-color:#C4C4C4;‘ href=‘javascript:void(0)‘> ? </a></li> "); } output.Append(" "); if (currentPage != totalPages) { output.AppendFormat("<li><a class=‘news_next3‘ href=http://www.mamicode.com/‘{0}pageIndex={1}&pageSize={2}‘>末页", href, totalPages, pageSize); } else { output.Append("<li><a class=‘news_next3‘ style=‘cursor:default;background-color:#C4C4C4;‘ href=‘javascript:void(0)‘>末页</a></li> "); } output.Append(" "); } //output.AppendFormat("<p>共{0}条记录 {1}/{2} 页</p>", totalCount, currentPage, totalPages); return output.ToString(); }
View中调用,样式包就不贴了,源码里有
@Html.Raw(Html.GetPager(3, Model.CurrentPageIndex, Model.TotalItemCount, string.Format("?cid={0}&nid={1}&", 1, 2)))
二、MvcPager两句代码搞定:Action中new PagedList(2.0版本直接调用IEnumerable<T>的ToPagedList扩展方法),view中调用MvcPager封装的Html.Pager扩展方法
Action:
public ActionResult Index(int pageIndex = 1, int pageSize = 3) { List<People> list = new List<People>() { new People(){ ID=1,Name="lily",Age=16}, ...... }; var data = http://www.mamicode.com/list.Skip((pageIndex - 1) * pageSize).Take(pageSize);"_AjaxIndex", pl); } return View(pl); }
1、默认显示的样式
@Html.Pager(Model, new PagerOptions() { PageIndexParameterName = "pageIndex", ShowPageIndexBox = true, PageIndexBoxType = PageIndexBoxType.DropDownList, ShowGoButton = true, PageIndexBoxWrapperFormatString = "跳转到第{0}页" })
2、添加大部分样式都可以通过构造PagerOptions给属性赋值就能搞定,但是要给原生生成的A标签添加样式就需要修改源码了
@Html.Pager(Model, new PagerOptions() { //分页外侧标签,默认为div ContainerTagName = "ul", //上、下一页 // "<span class=\"news_next3\"> ? </span>" HTML会被渲染 PrevPageText = " ? ", NextPageText = " ? ", //默认 //FirstPageText = "首页", //LastPageText = "尾页", //AlwaysShowFirstLastPageNumber = false, //ShowPrevNext = true, PageIndexParameterName = "pageIndex", //显示下拉页 //ShowPageIndexBox = true, //PageIndexBoxType = PageIndexBoxType.DropDownList, //ShowGoButton = true, //GoButtonText = "Go", //PageIndexBoxWrapperFormatString = "跳转到第{0}页", ////首、末、上、下、页码 的a标签,a标签外侧全部嵌套span //PagerItemWrapperFormatString = "<span class=\"news_next3\">{0}</span>", //当前页码(不包含首、末、上、下) 嵌套span标签 CurrentPagerItemWrapperFormatString = "<li><span class=\"news_next2\">{0}</span></li>", //其他页码(不包含首、末、上、下) 嵌套span标签 NumericPagerItemWrapperFormatString = "<li><span class=\"news_next3\">{0}</span></li>", //首、末、上、下(不包含页码) 嵌套span标签,与上相反 NavigationPagerItemWrapperFormatString = "<li><span class=\"news_next3\">{0}</span></li>", //pageIndex超出范围,一般直接修改url和删除掉最后一页数据时候发生 InvalidPageIndexErrorMessage = "页索引无效", PageIndexOutOfRangeErrorMessage = "页索引超出范围" })
3、图片右侧为AJAX分页,调用Ajax.Pager和Html.AjaxPager都是可以的,唯一需要注意的是把分页控件放到UpdateTargetId里面
@Ajax.Pager(Model, new PagerOptions() { PageIndexParameterName = "pageIndex", ShowPageIndexBox = true, PageIndexBoxType = PageIndexBoxType.DropDownList, ShowGoButton = true, PageIndexBoxWrapperFormatString = "跳转到第{0}页" }, new AjaxOptions() { UpdateTargetId = "upID" })
源码:http://files.cnblogs.com/NotAnEmpty/MvcPager.rar
实战MvcPager(PagerOptions自定义样式&同、异步)
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