标签：分页控件 class blog c code java
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using
System;using
System.Collections.Generic;using
System.Linq;using
System.Web;namespace
MvcTest.Extends{ /// <summary> /// 分页元素位置 /// </summary> public
enum PagerElementPosition { Left, Right } public
class PagerConfig { /// <summary> /// 记录总条数 /// </summary> public
int TotalRecord { get; set; } /// <summary> /// 记录的单位，默认为“条” /// </summary> public
string RecordUnit { get; set; } /// <summary> /// 记录的名称，默认为“记录” /// </summary> public
string RecordName { get; set; } /// <summary> /// 当前页码的参数名 /// </summary> public
string CurrentPageKey { get; set; } /// <summary> /// 当前页码 只读 /// </summary> public
int CurrentPage { get { if
(HttpContext.Current.Request.Params[CurrentPageKey] == null) { return
1; } else { try { int
currentPage = Convert.ToInt32(HttpContext.Current.Request.Params[CurrentPageKey]); if
(currentPage < 1) { return
1; } else
if (currentPage > TotalPage) { return
TotalPage; } else { return
currentPage; } } catch { return
1; } } } } private
int _PageSize; /// <summary> /// 每页显示记录数 /// </summary> public
int PageSize { get { return
_PageSize; } set { if
(value < 1) { _PageSize = 1; } else { _PageSize = value; } } } /// <summary> /// 总页数 只读 /// </summary> public
int TotalPage { get { return
(int)Math.Ceiling(TotalRecord / (double)PageSize); } } /// <summary> /// 是否显示首页、尾页链接 /// </summary> public
bool ShowFirstLastPageLink { get; set; } /// <summary> /// 是否显示上一页、下一页链接 /// </summary> public
bool ShowPrevNextPageLink { get; set; } /// <summary> /// 是否显示数字按钮 /// </summary> public
bool ShowDigitalLink { get; set; } /// <summary> /// 数字按钮数量 /// </summary> public
int DigitalLinkCount { get; set; } /// <summary> /// 是否显示总记录数 /// </summary> public
bool ShowTotalRecord { get; set; } /// <summary> /// 总记录数出现位置 /// </summary> public
PagerElementPosition TotalRecordPosition { get; set; } /// <summary> /// 是否显示当前页数和总页数信息 /// </summary> public
bool ShowPageInfo { get; set; } /// <summary> /// 当前页和总页数信息显示位置 /// </summary> public
PagerElementPosition PageInfoPosition { get; set; } /// <summary> /// 是否显示GoTo输入区域 /// </summary> public
bool ShowGoTo { get; set; } /// <summary> /// 指定生成的元素对应的class的前缀字符 /// </summary> public
string CssClassPreWord { get; set; } /// <summary> /// 是否创建为ajax分页控件 /// </summary> public
bool UseAjax { get; set; } /// <summary> /// Ajax提交后更新的html元素id /// </summary> public
string AjaxUpdateTargetID { get; set; } /// <summary> /// Ajax提交后调用的js function名称 /// </summary> public
string AjaxSuccessFunctionName { get; set; } /// <summary> /// 是否自动生成Ajax提交后调用的js function /// </summary> public
bool AutoGenarateAjaxSuccessFunction { get; set; } /// <summary> /// 使用默认值初始化设置 /// </summary> public
PagerConfig() { PageSize = 4; RecordUnit = "条"; RecordName = "记录"; CurrentPageKey = "page"; CssClassPreWord = "pager"; ShowFirstLastPageLink = true; ShowPrevNextPageLink = true; ShowDigitalLink = true; DigitalLinkCount = 10; ShowTotalRecord = false; TotalRecordPosition = PagerElementPosition.Left; ShowPageInfo = false; PageInfoPosition = PagerElementPosition.Left; ShowGoTo = false; UseAjax = false; AjaxUpdateTargetID = ""; AjaxSuccessFunctionName = "OnPageChanged"; AutoGenarateAjaxSuccessFunction = true; } } /// <summary> /// 配合Pager扩展实现分页的帮助类 /// </summary> public
class PagerHelper { /// <summary> /// 获取记录开始和结束编号，并返回实际的页码 /// </summary> /// <param name="allCount">记录总条数</param> /// <param name="pageSize">页大小</param> /// <param name="pageIndex">（输出）当前页码</param> /// <param name="startIndex">（输出）开始编号</param> /// <param name="endIndex">（输出）结束编号</param> /// <param name="currentPageKey">分页参数名称</param> /// <param name="pageIndexIs0Based">页码编号是否从0开始，默认为否</param> /// <param name="recordIndexIs0Based">记录编号是否从0开始，默认为否</param> public
static void GetStartAndEndIndex(int
allCount, int
pageSize, out
int pageIndex, out
int startIndex, out
int endIndex, string
currentPageKey = "page", bool
pageIndexIs0Based = false, bool
recordIndexIs0Based = false) { //计算pageIndex的实际值 pageIndex = GetRealPageIndex(allCount, pageSize, currentPageKey, pageIndexIs0Based); //计算过程是0based的 if
(!pageIndexIs0Based) { pageIndex--; //转成0based } //计算startIndex和endIndex startIndex = pageIndex * pageSize; endIndex = startIndex + pageSize - 1; if
(endIndex > allCount - 1) { endIndex = allCount - 1; } //0based计算完成，下面根据设置不同，输出不同 if
(!pageIndexIs0Based) { pageIndex++; } if
(!recordIndexIs0Based) { startIndex++; endIndex++; } } /// <summary> /// 返回实际页码 /// </summary> /// <param name="allCount">总记录数</param> /// <param name="pageSize">页面大小</param> /// <param name="currentPageKey">分页参数名称</param> /// <param name="pageIndexIs0Based">页码编号是否从0开始，默认为否</param> /// <returns>实际页码</returns> public
static int GetRealPageIndex(int
allCount, int
pageSize, string
currentPageKey = "page", bool
pageIndexIs0Based = false) { int
pageIndex; //整个计算过程都是0based的 if
(pageSize < 1) { pageSize = 1; //容错 } if
(HttpContext.Current.Request.Params[currentPageKey] == null) { pageIndex = 0; } else { try { int
_pageIndex = Convert.ToInt32(HttpContext.Current.Request.Params[currentPageKey]); //待判断的页码 if
(!pageIndexIs0Based) { _pageIndex--; //转成0based } if
(_pageIndex < 0) { pageIndex = 0; } else { int
totalPage = (int)Math.Ceiling(allCount / (double)pageSize); if
(_pageIndex >= totalPage) { pageIndex = totalPage - 1; } else { pageIndex = _pageIndex; } } } catch { pageIndex = 0; } } //0based计算完成，下面根据设置不同，输出不同 return
(pageIndexIs0Based) ? pageIndex : pageIndex + 1; } }} |
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using
MvcTest.Extends;using
System;using
System.Collections.Generic;using
System.Linq;using
System.Text;using
System.Web;using
System.Web.Mvc;using
System.Web.Routing;namespace
MvcTest.HTML{ public
static class PagerExtensions { //提取 返回a标签 方法 private
static string getLinkHtml(UrlHelper urlHelper, bool
useAjax, string
ajaxSuccessFunction, string
linkContent, string
actionName, string
controllerName, RouteValueDictionary routeValues) { string
link = ""; if
(useAjax) { link += "<a href=\"javascript:$.post(‘"
+ urlHelper.Action(actionName, controllerName) + "‘,{"; //将route放到post表单中 foreach
(var
route in
routeValues.Keys) { link += route + ":‘"
+ routeValues[route].ToString() + "‘,"; } if
(routeValues.Count > 0) { link = link.Remove(link.Length - 1); } link += "},"
+ ajaxSuccessFunction + ")\" >"; } else { link += "<a href=\""
+ urlHelper.Action(actionName, controllerName, routeValues) + "\">"; } link += linkContent; link += "</a>"; return
link; } #region 分页扩展 /// <summary> /// 返回用于分页的div元素 /// </summary> /// <param name="htmlHelper">HtmlHelper</param> /// <param name="pagerConfig">分页设置对象</param> /// <returns></returns> public
static MvcHtmlString Pager(this
HtmlHelper htmlHelper, PagerConfig pagerConfig) { return
Pager(htmlHelper, "", "", new
{ }, new
{ }, pagerConfig); } /// <summary> /// 返回用于分页的div元素 /// </summary> /// <param name="htmlHelper">HtmlHelper</param> /// <param name="htmlAttributes">html属性对象</param> /// <param name="pagerConfig">分页设置对象</param> /// <returns></returns> public
static MvcHtmlString Pager(this
HtmlHelper htmlHelper, object
htmlAttributes, PagerConfig pagerConfig) { return
Pager(htmlHelper, "", "", new
{ }, htmlAttributes, pagerConfig); } /// <summary> /// 返回用于分页的div元素 /// </summary> /// <param name="htmlHelper">HtmlHelper</param> /// <param name="actionName">方法</param> /// <param name="htmlAttributes">html属性对象</param> /// <param name="pagerConfig">分页设置对象</param> /// <returns></returns> public
static MvcHtmlString Pager(this
HtmlHelper htmlHelper, string
actionName, object
htmlAttributes, PagerConfig pagerConfig) { return
Pager(htmlHelper, actionName, "", new
{ }, htmlAttributes, pagerConfig); } /// <summary> /// 返回用于分页的div元素 /// </summary> /// <param name="htmlHelper">HtmlHelper</param> /// <param name="actionName">方法</param> /// <param name="controllerName">控制器</param> /// <param name="htmlAttributes">html属性对象</param> /// <param name="pagerConfig">分页设置对象</param> /// <returns></returns> public
static MvcHtmlString Pager(this
HtmlHelper htmlHelper, string
actionName, string
controllerName, object
htmlAttributes, PagerConfig pagerConfig) { return
Pager(htmlHelper, actionName, controllerName, new
{ }, htmlAttributes, pagerConfig); } /// <summary> /// 返回用于分页的div元素 /// </summary> /// <param name="htmlHelper">HtmlHelper</param> /// <param name="actionName">方法</param> /// <param name="controllerName">控制器</param> /// <param name="routeValues">路由参数</param> /// <param name="htmlAttributes">html属性对象</param> /// <param name="pagerConfig">分页设置对象</param> /// <returns></returns> public
static MvcHtmlString Pager(this
HtmlHelper htmlHelper, string
actionName, string
controllerName, object
routeValues, object
htmlAttributes, PagerConfig pagerConfig) { RouteValueDictionary RouteValues; if
(routeValues == null) { RouteValues = new
RouteValueDictionary(); } else { RouteValues = new
RouteValueDictionary(routeValues); } UrlHelper Url = new
UrlHelper(htmlHelper.ViewContext.RequestContext); AjaxHelper Ajax = new
AjaxHelper(htmlHelper.ViewContext, htmlHelper.ViewDataContainer); StringBuilder sbPager = new
StringBuilder(); sbPager.Append("<div"); //利用反射获取htmlAttributes的全部元素和值 if
(htmlAttributes != null) { System.Reflection.PropertyInfo[] htmlProperties = (System.Reflection.PropertyInfo[])htmlAttributes.GetType().GetProperties(); foreach
(var
property in
htmlProperties) { sbPager.Append(" "
+ property.Name + "=\""
+ property.GetValue(htmlAttributes).ToString() + "\""); } } sbPager.Append(">"); //左侧记录总数信息 if
(pagerConfig.ShowTotalRecord && pagerConfig.PageInfoPosition == PagerElementPosition.Left) { sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-count\">共"
+ pagerConfig.TotalRecord + pagerConfig.RecordUnit + pagerConfig.RecordName + "</span>"); } //左侧页码信息 if
(pagerConfig.ShowPageInfo && pagerConfig.PageInfoPosition == PagerElementPosition.Left) { sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-info\">第"
+ pagerConfig.CurrentPage + "页/共"
+ pagerConfig.TotalPage + "页</span>"); } //首页 if
(pagerConfig.ShowFirstLastPageLink) { if
(pagerConfig.CurrentPage > 1) { RouteValues[pagerConfig.CurrentPageKey] = 1; sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-btn\">"
+ getLinkHtml(Url, pagerConfig.UseAjax, pagerConfig.AjaxSuccessFunctionName, "首页", actionName, controllerName, RouteValues) + "</span>"); } else { sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-btn\">首页</span>"); } } //上一页 if
(pagerConfig.ShowPrevNextPageLink) { if
(pagerConfig.CurrentPage > 1) { RouteValues[pagerConfig.CurrentPageKey] = pagerConfig.CurrentPage - 1; sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-btn\">"
+ getLinkHtml(Url, pagerConfig.UseAjax, pagerConfig.AjaxSuccessFunctionName, "上一页", actionName, controllerName, RouteValues) + "</span>"); } else { sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-btn\">上一页</span>"); } } //数字导航开始 if
(pagerConfig.ShowDigitalLink) { int
shownStartPageIndex, shownEndPageIndex; //总页数少于要显示的页数，页码全部显示 if
(pagerConfig.DigitalLinkCount >= pagerConfig.TotalPage) { shownStartPageIndex = 1; shownEndPageIndex = pagerConfig.TotalPage; } else//显示指定数量的页码 { int
forward = (int)Math.Ceiling(pagerConfig.DigitalLinkCount / 2.0); if
(pagerConfig.CurrentPage > forward)//起始页码大于1 { shownEndPageIndex = pagerConfig.CurrentPage + pagerConfig.DigitalLinkCount - forward; if
(shownEndPageIndex > pagerConfig.TotalPage)//结束页码大于总页码结束页码为最后一页 { shownStartPageIndex = pagerConfig.TotalPage - pagerConfig.DigitalLinkCount + 1; shownEndPageIndex = pagerConfig.TotalPage; } else { shownStartPageIndex = pagerConfig.CurrentPage - forward + 1; } } else//起始页码从1开始 { shownStartPageIndex = 1; shownEndPageIndex = pagerConfig.DigitalLinkCount; } } //向上… if
(shownStartPageIndex > 1) { RouteValues[pagerConfig.CurrentPageKey] = shownStartPageIndex - 1; sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-number\">"
+ getLinkHtml(Url, pagerConfig.UseAjax, pagerConfig.AjaxSuccessFunctionName, "...", actionName, controllerName, RouteValues) + "</span>"); } //数字 for
(int
i = shownStartPageIndex; i <= shownEndPageIndex; i++) { if
(i != pagerConfig.CurrentPage) { RouteValues[pagerConfig.CurrentPageKey] = i; sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-number\">"
+ getLinkHtml(Url, pagerConfig.UseAjax, pagerConfig.AjaxSuccessFunctionName, i.ToString(), actionName, controllerName, RouteValues) + "</span>"); } else { sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-number "
+ pagerConfig.CssClassPreWord + "-currentnum\">"
+ i.ToString() + "</span>"); } } //向下… if
(shownEndPageIndex < pagerConfig.TotalPage) { RouteValues[pagerConfig.CurrentPageKey] = shownEndPageIndex + 1; sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-number\">"
+ getLinkHtml(Url, pagerConfig.UseAjax, pagerConfig.AjaxSuccessFunctionName, "...", actionName, controllerName, RouteValues) + "</span>"); } } ////数字导航结束 //下一页 if
(pagerConfig.ShowPrevNextPageLink) { if
(pagerConfig.CurrentPage < pagerConfig.TotalPage) { RouteValues[pagerConfig.CurrentPageKey] = pagerConfig.CurrentPage + 1; sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-btn\">"
+ getLinkHtml(Url, pagerConfig.UseAjax, pagerConfig.AjaxSuccessFunctionName, "下一页", actionName, controllerName, RouteValues) + "</span>"); } else { sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-btn\">下一页</span>"); } } //尾页 if
(pagerConfig.ShowFirstLastPageLink) { if
(pagerConfig.CurrentPage < pagerConfig.TotalPage) { RouteValues[pagerConfig.CurrentPageKey] = pagerConfig.TotalPage; sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-btn\">"
+ getLinkHtml(Url, pagerConfig.UseAjax, pagerConfig.AjaxSuccessFunctionName, "尾页", actionName, controllerName, RouteValues) + "</span>"); } else { sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-btn\">尾页</span>"); } } //右侧记录总数信息 if
(pagerConfig.ShowTotalRecord && pagerConfig.PageInfoPosition == PagerElementPosition.Right) { sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-count\">共"
+ pagerConfig.TotalRecord + pagerConfig.RecordUnit + pagerConfig.RecordName + "</span>"); } //右侧页码信息 if
(pagerConfig.ShowPageInfo && pagerConfig.PageInfoPosition == PagerElementPosition.Right) { sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-info\">第"
+ pagerConfig.CurrentPage + "页/共"
+ pagerConfig.TotalPage + "页</span>"); } //页码输入框 if
(pagerConfig.ShowGoTo) { RouteValues[pagerConfig.CurrentPageKey] = "--pageRouteValue--"; sbPager.Append("<span class=\""
+ pagerConfig.CssClassPreWord + "-goto\">转到第<input class=\""
+ pagerConfig.CssClassPreWord + "-goto-input\" type=\"text\" url=\""
+ Url.Action(actionName, controllerName, RouteValues) + "\" />页"); if
(pagerConfig.UseAjax) { sbPager.Append("<input class=\""
+ pagerConfig.CssClassPreWord + "-goto-submit\" type=\"button\" value=\"GO\" onclick=\"$.post( $(this).prev().attr(‘url‘).replace(‘--pageRouteValue--‘,$(this).prev().val()),"
+ pagerConfig.AjaxSuccessFunctionName + ")\" /></span>"); } else { sbPager.Append("<input class=\""
+ pagerConfig.CssClassPreWord + "-goto-submit\" type=\"button\" value=\"GO\" onclick=\"window.location = $(this).prev().attr(‘url‘).replace(‘--pageRouteValue--‘,$(this).prev().val());\" /></span>"); } } //ajax分页回调函数 if
(pagerConfig.UseAjax) { if
(pagerConfig.AutoGenarateAjaxSuccessFunction) { sbPager.Append("<script type=\"text/javascript\">function "
+ pagerConfig.AjaxSuccessFunctionName + "(data){$(‘#"
+ pagerConfig.AjaxUpdateTargetID + "‘).html(data);}</script>"); } } sbPager.Append("</div>"); return
MvcHtmlString.Create(sbPager.ToString()); } #endregion }} |
调用
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public
ActionResult Index() { int
pageSize = 4; int
allCount = db.Movies.Count(); ViewBag.Num = allCount; ViewBag.PageSize = pageSize; int
pageIndex, startIndex, endIndex; //获取开始和结束的记录序号 PagerHelper.GetStartAndEndIndex(allCount, pageSize, out
pageIndex, out
startIndex, out
endIndex); //调用存储过程返回指定序号范围的数据 // return View(db.SelectUserList(startIndex, endIndex)); var
sear = (from
m in
db.Movies where
m.ID >= startIndex && m.ID <= endIndex select
m).ToList(); return
View(sear); //return View(db.Movies.ToList()); } |
@Html.Pager("Index", "Movies", new { }, new PagerConfig { TotalRecord = ViewBag.Num, PageSize = ViewBag.PageSize })
标签：分页控件 class blog c code java
原文地址：http://www.cnblogs.com/MarchThree/p/3751053.html
