循环IPagedList对象引用异常

Question

我在许多操作中都在项目中使用PagedList，但一切都很好，但我还是束手无策。获取数据列表后有46个项目，在操作和查看时一切正常。当启动5个项目中的foreach列表或4索引引发对象引用。App_Web_fwr4tzo0.dll中发生了'System.NullReferenceException'类型的异常，但未在用户代码中处理。] 2] 3] {{3} }

其他信息：对象引用未设置为对象的实例。

List<DocumentsViewModel> dsListDocumentsPublish = null;
        this._ducumentsService.DocumentSearcher.SearchDocuments(out dsListDocumentsPublish);
        var Documents = from n in dsListDocumentsPublish
                        select n;

        int pageSize = Convert.ToInt32(ConfigurationManager.AppSettings["pagesModal"]);

        int pageNumber = (page ?? 1);

        ViewBag.SearchModel = null;


        return PartialView("_AssociatedDocumentsPartial",Documents.ToPagedList(pageNumber,5));



    @model PagedList.IPagedList<LawyerPortalPlovdiv.Models.Admin.DocumentsViewModel>
@{
    ViewBag.Title = "";
    ViewBag.RightSideTitle = "";
    var pagenation = "Страница";

    var action = ViewContext.Controller.ValueProvider.GetValue("action").RawValue.ToString();
    var searchModel = ViewBag.SearchModel as DocumentsSearchModel;
}

<div class="modal fade p-0 " id="AllDocs" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true" data-backdrop="static" data-keyboard="false" style="top:150px;">
    <div class="modal-dialog" role="document">
        <div class="modal-content" id="allDocsContent">
            @if (User.IsInRole("ManageAdministration") && Model != null)
            {
                <div class="row ">
                    <div class="col-md-8">
                        <div id="ducumentTable" class="table-responsive-md">
                            <table class="table table-hover" style="overflow-y: scroll; overflow-x: hidden">
                                <thead class="col-md-12" style="background-color: darkred; font-family: Arial; font-size: 10px;color:white">
                                    <tr style="border-top: none">
                                        <th class="col-md-2">ДАТА</th>
                                        <th class="col-md-4">ДОКУМЕНТ</th>
                                        <th class="col-md-6">ИМЕ НА ФАЙЛ</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    @foreach (var prot in Model)
                                    {
                                        <tr class="persons text-center">
                                            <td class="p-0 col-md-2"><span class="date2">@prot.Date.ToShortDateString()</span></td>
                                            <td class="col-md-4">@prot.Title</td>
                                            <td class=" col-md-6" >@prot.FileName</td>
                                        </tr>
                                    }