无法让 Tag Helpers 在 .NET Core 2.1 中工作

Can't get Tag Helpers to work in .NET Core 2.1

我一直在努力按照 https://docs.microsoft.com/en-us/aspnet/core/mvc/views/tag-helpers/authoring?view=aspnetcore-2.1 让标签助手工作,但无论我做什么,它们都无法在智能感知中识别,在生成 [=24= 的代码中没有遇到断点] 并且元素未转换。

这是我的EmailTagHelper.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Razor.TagHelpers;

namespace eHealthy.TagHelpers
{
    public class EmailTagHelper : TagHelper
    {
        public override void Process(TagHelperContext context, TagHelperOutput output)
        {
            output.TagName = "a";    // Replaces <email> with <a> tag
        }
    }
}

这是我的_ViewImports.cshtml

@using Microsoft.AspNetCore.Identity
@using eHealthy.Models
@using eHealthy.Models.AccountViewModels
@using eHealthy.Models.ManageViewModels
@using eHealthy.Helpers;
@using eHealthy.TagHelpers;


@addTagHelper "*, Microsoft.AspNetCore.Mvc.TagHelpers"
@addTagHelper "*, eHealthy.TagHelpers"

这是我尝试调用助手的页面

@model EditViewModel

@{
    ViewBag.Title = "title";
    Layout = "_Layout";
}

@*<h2>title</h2>*@

<form method="post">
    <email>
        potato
    </email>
</form>


<input type="hidden"/>

取消引用您添加的标签助手。删除 eHealthy.TagHelpers 助手,您甚至不需要创建它。

@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers