PagedList.Mvc省略号按钮不起作用

有效的解决方案是隐藏省略号按钮。

解决方案

此解决方案涉及隐藏省略号按钮。为此，您需要确保DisplayEllipsesWhenNotShowingAllPageNumbersunder PagedListRenderOptionsclass的属性设置为false，因为默认情况下为true。它的此设置使寻呼机显示省略号按钮。

下面给出的代码段将进入您的View或PartialView html中，您将需要更改一些自定义参数，例如sortOrder和action name等。

取消分页器时隐藏省略号按钮

@Html.PagedListPager(Model,
 page => Url.Action("GetOrderDetails", new { page, sortOrder = ViewBag.CurrentSort,
 , command = "paging", PageSize = ViewBag.PageSize }), 
 PagedListRenderOptions.EnableUnobtrusiveAjaxReplacing( 
 new PagedListRenderOptions { DisplayEllipsesWhenNotShowingAllPageNumbers = false},
 new AjaxOptions() { HttpMethod = "POST", UpdateTargetId = "gridTable",
 OnBegin = "OnBegin", OnSuccess = "OnSuccess" }))

当分页器未ajaxized时，隐藏“省略号”按钮

@Html.PagedListPager(Model, page => Url.Action("Index", new { page, 
sortOrder = ViewBag.CurrentSort, command = "paging", PageSize = ViewBag.PageSize}),
new PagedListRenderOptions { DisplayEllipsesWhenNotShowingAllPageNumbers = false })

另一个解决方案

从GitHub的https://github.com/troygoode/PagedList下载源代码，然后在Visual Studio中打开解决方案。

在HtmlHelper.cs类中，添加以下2个方法。

private static TagBuilder PreviousEllipsis(IPagedList list, Func<int, string> generatePageUrl, PagedListRenderOptions options, int firstPageToDisplay)
    {
        var targetPageNumber = firstPageToDisplay - 1;//list.PageNumber - 1;
        var previous = new TagBuilder("a")
        {
            InnerHtml = string.Format(options.EllipsesFormat, targetPageNumber)
        };
        previous.Attributes["rel"] = "prev";

        if (!list.HasPreviousPage)
            return WrapInListItem(previous, options, "PagedList-skipToPrevious","disabled");

        previous.Attributes["href"] = generatePageUrl(targetPageNumber);
        return WrapInListItem(previous, options, "PagedList-skipToPrevious");
    }
    private static TagBuilder NextEllipsis(IPagedList list, Func<int, string> generatePageUrl, PagedListRenderOptions options, int lastPageToDisplay)
    {
        var targetPageNumber = lastPageToDisplay + 1;// list.PageNumber  +1;
        var next = new TagBuilder("a")
        {
            InnerHtml = string.Format(options.EllipsesFormat, targetPageNumber)
        };
        next.Attributes["rel"] = "next";

        if (!list.HasNextPage)
            return   WrapInListItem(next, options, "PagedList-skipToNext", "disabled");

        next.Attributes["href"] = generatePageUrl(targetPageNumber);
        return WrapInListItem(next, options, "PagedList-skipToNext");
    }

在同一HtmlHelper.cs中，PagedListPager用以下代码替换现有的方法。这段代码只有2处更改，而这是的注释行之前插入的2行//listItemLinks.Add(Ellipses(options));。该方法中有2个地方在原始代码中出现此行，这些地方已被注释并由对上面代码片段中定义的新方法的调用所代替。

    ///<summary>
    /// Displays a configurable paging control for instances of PagedList.
    ///</summary>
    ///<param name = "html">This method is meant to hook off HtmlHelper as an extension method.</param>
    ///<param name = "list">The PagedList to use as the data source.</param>
    ///<param name = "generatePageUrl">A function that takes the page number  of the desired page and returns a URL-string that will load that page.</param>
    ///<param name = "options">Formatting options.</param>
    ///<returns>Outputs the paging control HTML.</returns>
    public static MvcHtmlString PagedListPager(this System.Web.Mvc.HtmlHelper html,
                                               IPagedList list,
                                               Func<int, string> generatePageUrl,
                                               PagedListRenderOptions options)
    {
        if (options.Display == PagedListDisplayMode.Never || (options.Display == PagedListDisplayMode.IfNeeded && list.PageCount <= 1))
            return null;

        var listItemLinks = new List<TagBuilder>();

        //calculate start and end of range of page numbers
        var firstPageToDisplay = 1;
        var lastPageToDisplay = list.PageCount;
        var pageNumbersToDisplay = lastPageToDisplay;
        if (options.MaximumPageNumbersToDisplay.HasValue && list.PageCount > options.MaximumPageNumbersToDisplay)
        {
            // cannot fit all pages into pager
            var maxPageNumbersToDisplay = options.MaximumPageNumbersToDisplay.Value;
            firstPageToDisplay = list.PageNumber - maxPageNumbersToDisplay / 2;
            if (firstPageToDisplay < 1)
                firstPageToDisplay = 1;
            pageNumbersToDisplay = maxPageNumbersToDisplay;
            lastPageToDisplay = firstPageToDisplay + pageNumbersToDisplay - 1;
            if (lastPageToDisplay > list.PageCount)
                firstPageToDisplay = list.PageCount - maxPageNumbersToDisplay + 1;
        }


        //first
        if (options.DisplayLinkToFirstPage == PagedListDisplayMode.Always || (options.DisplayLinkToFirstPage == PagedListDisplayMode.IfNeeded && firstPageToDisplay > 1))
            listItemLinks.Add(First(list, generatePageUrl, options));

        //previous
        if (options.DisplayLinkToPreviousPage == PagedListDisplayMode.Always || (options.DisplayLinkToPreviousPage == PagedListDisplayMode.IfNeeded && !list.IsFirstPage))
            listItemLinks.Add(Previous(list, generatePageUrl, options));

        //text
        if (options.DisplayPageCountAndCurrentLocation)
            listItemLinks.Add(PageCountAndLocationText(list, options));

        //text
        if (options.DisplayItemSliceAndTotal)
            listItemLinks.Add(ItemSliceAndTotalText(list, options));

        //page
        if (options.DisplayLinkToIndividualPages)
        {
            //if there are previous page numbers not displayed, show an ellipsis
            if (options.DisplayEllipsesWhenNotShowingAllPageNumbers && firstPageToDisplay > 1)
                listItemLinks.Add(PreviousEllipsis(list, generatePageUrl, options, firstPageToDisplay));
                //listItemLinks.Add(Ellipses(options));

            foreach (var i in Enumerable.Range(firstPageToDisplay, pageNumbersToDisplay))
            {
                //show delimiter between page numbers
                if (i > firstPageToDisplay && !string.IsNullOrWhiteSpace(options.DelimiterBetweenPageNumbers))
                    listItemLinks.Add(WrapInListItem(options.DelimiterBetweenPageNumbers));

                //show page number link
                listItemLinks.Add(Page(i, list, generatePageUrl, options));
            }

            //if there are subsequent page numbers not displayed, show an ellipsis
            if (options.DisplayEllipsesWhenNotShowingAllPageNumbers && (firstPageToDisplay + pageNumbersToDisplay - 1) < list.PageCount)
                listItemLinks.Add(NextEllipsis(list, generatePageUrl, options, lastPageToDisplay));
                //listItemLinks.Add(Ellipses(options));
        }

        //next
        if (options.DisplayLinkToNextPage == PagedListDisplayMode.Always || (options.DisplayLinkToNextPage == PagedListDisplayMode.IfNeeded && !list.IsLastPage))
            listItemLinks.Add(Next(list, generatePageUrl, options));

        //last
        if (options.DisplayLinkToLastPage == PagedListDisplayMode.Always || (options.DisplayLinkToLastPage == PagedListDisplayMode.IfNeeded && lastPageToDisplay < list.PageCount))
            listItemLinks.Add(Last(list, generatePageUrl, options));

        if(listItemLinks.Any())
        {
            //append class to first item in list?
            if (!string.IsNullOrWhiteSpace(options.ClassToApplyToFirstListItemInPager))
                listItemLinks.First().AddCssClass(options.ClassToApplyToFirstListItemInPager);

            //append class to last item in list?
            if (!string.IsNullOrWhiteSpace(options.ClassToApplyToLastListItemInPager))
                listItemLinks.Last().AddCssClass(options.ClassToApplyToLastListItemInPager);

            //append classes to all list item links
            foreach (var li in listItemLinks)
                foreach (var c in options.LiElementClasses ?? Enumerable.Empty<string>())
                    li.AddCssClass(c);
        }

        //collapse all of the list items into one big string
        var listItemLinksString = listItemLinks.Aggregate(
            new StringBuilder(),
            (sb, listItem) => sb.Append(listItem.ToString()),
            sb=> sb.ToString()
            );

        var ul = new TagBuilder("ul")
                    {
                        InnerHtml = listItemLinksString
                    };
        foreach (var c in options.UlElementClasses ?? Enumerable.Empty<string>())
            ul.AddCssClass(c);

        var outerDiv = new TagBuilder("div");
        foreach(var c in options.ContainerDivClasses ?? Enumerable.Empty<string>())
            outerDiv.AddCssClass(c);
        outerDiv.InnerHtml = ul.ToString();

        return new MvcHtmlString(outerDiv.ToString());
    }

然后，重建代码并将dll复制到您的bin文件夹中。此后，您将发现省略号按钮已启用，并将您带到当前页码集的第一页之前的页面，或此当前集号之后的页面。我对此进行了测试，并成功了。