具有IEnumerable模型和输入标签帮助器的ASP.NET mvc视图 [英] ASP.NET mvc View with IEnumerable model and input tag helper

问题描述

在此官方ASP.NET Core教程，我可以使用输入代码帮助器，如下所示.但是由于 foreach循环中表单元素的已知模型绑定问题，我想改用for loop. 问题:如果我要在以下View中将@foreach (var item in Model)替换为@for (int i=0; i < Model.Count(); i++). <input asp-for="???" />中的asp-for是什么?由于某种原因，智能感知无法识别，例如Model [i] .BlogId或@Model [i] .BlogId

In this official ASP.NET Core tutorial, I can use an Input Tag Helper as shown below. But due to a known model binding issue of form elements in a foreach loop, I want to use for loop instead. Question: If I were to replace @foreach (var item in Model) with @for (int i=0; i < Model.Count(); i++) in the following View. What would be my asp-for in <input asp-for="???" /> ? For some reason, intellisense is not recognizing, e.g, Model[i].BlogId or @Model[i].BlogId

@model IEnumerable<EFGetStarted.AspNetCore.NewDb.Models.Blog>

@{
    ViewBag.Title = "Blogs";
}

<h2>Blogs</h2>

<p>
    <a asp-controller="Blogs" asp-action="Create">Create New</a>
</p>

<table class="table">
    <tr>
        <th>Id</th>
        <th>Url</th>
    </tr>

    @foreach (var item in Model)
    {
        <tr>
            <td>
                <input asp-for="@item.BlogId" />
            </td>
            <td>
                <input asp-for="@item.Url" />
            </td>
        </tr>
    }
</table>

推荐答案

我遇到了同样的问题，并通过以下方式解决了该问题:

I had the same problem and solved it this way:

@for (int i = 0; i < Model.Translations.Count; i++)
{
    @Html.HiddenFor(m => m.Translations[i].LanguageId)
    <form-group-text asp-for="@Model.Translations[i].Content"/>
}

重要的部分是使用for循环，并通过@Model访问asp-for.

The important part is using the for loop, and accessing the asp-for via @Model.

也就是说，如果您的模型本身应为IEnumerable，则应重新考虑.而是为其创建一个属性.另外，您还需要确保可以通过索引访问您的收藏集.您可以将属性设置为IList类型.为它分配IEnumerable时，可以先调用ToList.

That said, you should rethink, if your Model itself should be IEnumerable. Instead create a property for it. Also you need to make sure, your Collection is accessable via Index. You could make your property of type IList. When you assign an IEnumerable to it, you can call ToList before.

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