分页列表不适用于具有多个模型的视图
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【中文标题】分页列表不适用于具有多个模型的视图【英文标题】:Paginated List not working with the View with multiple model 【发布时间】:2021-12-07 13:04:14 【问题描述】:我使用link 构建了 ASP.NET Core Web 应用程序来帮助搜索/排序/分页。我有链接中建议的 PaginatedList.cs 类来帮助分页,如
public class PaginatedList<T> : List<T>
public int PageIndex get; private set;
public int TotalPages get; private set;
public PaginatedList(List<T> items, int count, int pageIndex, int pageSize)
PageIndex = pageIndex;
TotalPages = (int)Math.Ceiling(count / (double)pageSize);
this.AddRange(items);
public bool HasPreviousPage
get
return (PageIndex > 1);
public bool HasNextPage
get
return (PageIndex < TotalPages);
public static async Task<PaginatedList<T>> CreateAsync(IQueryable<T> source, int pageIndex, int pageSize)
var count = await source.CountAsync();
var items = await source.Skip((pageIndex - 1) * pageSize).Take(pageSize).ToListAsync();
return new PaginatedList<T>(items, count, pageIndex, pageSize);
我有一个使用多个模型的视图,所以创建了一个如下所示的集合模型
public class CustomerInventoryCollectionDataModel
public Customer CustomerData get; set;
public List<Inventory> Inventorys get; set;
所以我想要索引视图上的库存表的分页。因此,正如链接中所建议的那样,我在视图上使用了 PaginatedList,例如
@model PaginatedList<JAXApp.Models.CustomerInventoryCollectionDataModel>
<div>
<h4>Customer</h4>
<hr />
<dl class="row">
<dt class="col-sm-2">
Customer Number
</dt>
<dd class="col-sm-10">
@html.DisplayFor(model => model.CustomerData.CustomerNumber)
</dd>
</d1>
<table class="table">
<thead>...</thead>
<tbody>
@foreach (var item in Model.Inventorys)
当我尝试在上面的视图中访问 CustomerData 和 Inventorys 时会引发错误
'PaginatedList<CustomerInventoryCollectionDataModel>' does not contain a definition for 'Inventorys' and no accessible extension method 'Inventorys' accepting a first argument of type 'PaginatedList<CustomerInventoryCollectionDataModel>' could be found (are you missing a using directive or an assembly reference?)
PaginatedList<CustomerInventoryCollectionDataModel>' does not contain a definition for 'CustomerData' and no accessible extension method 'CustomerData' accepting a first argument of type 'PaginatedList<CustomerInventoryCollectionDataModel>' could be found (are you missing a using directive or an assembly reference?)
如何按照链接中的建议对库存表进行分页
【问题讨论】:
您的模型是一个集合。 PaginatedList 没有属性 Inventorys。您的集合/模型中的项目确实具有该属性。循环遍历您的模型并使用 item.CustomerData.CustomerNumber @lordvlad30 我正在按照链接构建它,我对 Web 应用程序开发非常陌生。你能帮我建议是否需要更改 PaginatedList 类吗? 【参考方案1】:在您的 View 中,您将 PaginatedList
定义为您的 View 模型,并且它没有任何名称为 CustomerData
或 Inventorys
的属性。
您可以像这样更改代码:
public class CustomerInventoryCollectionDataModel
public Customer CustomerData get; set;
public PaginatedList<Inventory> Inventorys get; set;
和
@model JAXApp.Models.CustomerInventoryCollectionDataModel
<div>
<h4>Customer</h4>
<hr />
<dl class="row">
<dt class="col-sm-2">
Customer Number
</dt>
<dd class="col-sm-10">
@Html.DisplayFor(model => model.CustomerData.CustomerNumber)
</dd>
</d1>
<table class="table">
<thead>...</thead>
<tbody>
@foreach (var item in Model.Inventorys)
【讨论】:
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