链接标记帮助程序在ASP.NET Core 2.2中不起作用 [英] Link tag helper not working in asp.net core 2.2

问题描述

迁移到asp.net core 2.2后，我的链接标记助手不再正常工作。

My link tag helpers are no longer working properly after migrating to asp.net core 2.2.

 <a class="btn btn-outline-primary" asp-controller="MyController" asp-action="MyAction" asp-route-id="@Id">Link</a>

当我将兼容性版本设置为2.1时此方法很好，但当设置为兼容性时会生成一个空的href版本2.2。

This works fine when I set the compatibility version to 2.1, but produces an empty href when set to compatibility version 2.2.

<a class="btn btn-outline-primary" href="">Link</a>

我遵循了从ASP.NET Core 2.1迁移到2.2

 .SetCompatibilityVersion(CompatibilityVersion.Version_2_1);  --> Works

 .SetCompatibilityVersion(CompatibilityVersion.Version_2_2);  --> Doesn't work

项目文件无效：

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp2.2</TargetFramework>
    <TypeScriptToolsVersion>2.8</TypeScriptToolsVersion>
    <LangVersion>7.2</LangVersion>
    <AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.App" />
    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.2.2" />
    <PackageReference Include="Microsoft.Windows.Compatibility" Version="2.0.1" />
    <PackageReference Include="Sendgrid" Version="9.10.0" />
    <PackageReference Include="Stripe.net" Version="22.8.1" />
    <PackageReference Include="UAParser" Version="3.1.36" />
  </ItemGroup>

  <ItemGroup>
    <Folder Include="Data\Migrations\" />
  </ItemGroup>

</Project>

推荐答案

我今天在新的AspNet Core上遇到了同样的问题2.2使用内置的MVC模板创建的项目。标记不是在HTML中生成的。

I had the same issue today on a new AspNet Core 2.2 Project created using the built in MVC Template. The tags were not generated in the HTML.

更改以下

服务。 AddMvc（）。SetCompatibilityVersion（CompatibilityVersion.Version_2_2）;

至

services.AddMvc（）。SetCompatibilityVersion（CompatibilityVersion.Version_2_1）;

Works，这些标记现在在HTML中呈现，我进行了一些挖掘，看来这是 AspNetCore 2.2 中的一个问题。他们提到它已在 AspNetCore 3.0.0-preview3 中修复。

Works and the tags are now rendered in the HTML, I done some digging and it looks as though this has been raised as an issue in AspNetCore 2.2. They mention it has been fixed in AspNetCore 3.0.0-preview3.

如此处所述： https://github.com/aspnet/AspNetCore/issues/5055 和此处 https://github.com/aspnet/AspNetCore/issues/6471

如果需要使用AspNetCore 2.2，则可以采用临时解决方法，如果可行的话，请按照提出的问题在 Startup.cs 中修改以下内容。

If you need to use AspNetCore 2.2 then a temporary workaround, if viable is to ammend the following in your Startup.cs as mentioned on the issue raised.

services.AddMvc（options => options.EnableEndpointRouting = false）

这篇关于链接标记帮助程序在ASP.NET Core 2.2中不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！