Question

我跟随location的Pluralsight课程，这似乎是当dotnetcore还没有打到RC2的时候，所以新指令的指示稍微偏离。

基本上我的剃刀观点没有成功地给我帮助智能，虽然帮助者自己正在工作保存asp-validation-summary。

从预先构建的模板中，我可以看到识别出来的帮助者得到了自己的颜色：

但是在我从一个空项目开始并逐步完成的项目中，我得到以下内容：

正如您所看到的，我没有得到剃刀视图识别的帮助程序，尽管正确使用了帮助程序，如下所示：

<form>

    <label for="Name">Name</label>
    <input type="text" data-val="true" data-val-length="The field Name must be a string with a minimum length of 5 and a maximum length of 255." data-val-length-max="255" data-val-length-min="5" data-val-required="The Name field is required." id="Name" name="Name" value="" />
    <span class="field-validation-valid" data-valmsg-for="Name" data-valmsg-replace="true"></span>
    <label for="Email">Email</label>
    <input type="email" data-val="true" data-val-email="The Email field is not a valid e-mail address." data-val-required="The Email field is required." id="Email" name="Email" value="" />
    <span class="field-validation-valid" data-valmsg-for="Email" data-valmsg-replace="true"></span>
    <label for="Message">Message</label>
    <textarea cols="40" rows="4" data-val="true" data-val-length="The field Message must be a string with a minimum length of 5 and a maximum length of 1024." data-val-length-max="1024" data-val-length-min="5" data-val-required="The Message field is required." id="Message" name="Message">
</textarea>
    <span class="field-validation-valid" data-valmsg-for="Message" data-valmsg-replace="true"></span>
    <div>
        <input type="submit" />
    </div>
</form>

以上内容不包括我的屏幕截图中的一行：

<div asp-validation-summary="ValidationSummary.ModelOnly"></div>

因为只要我添加该行，页面就不会呈现。我收到500内部服务器错误。

以下是相关的一些内容，虽然可以让我的intellisense工作，但主要取自Github issue

Startup.cs

    public class Startup
    {
        // This method gets called by the runtime. Use this method to add services to the container.
        // For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app)
        {
            app.UseStaticFiles();

            app.UseMvc(config =>
            {
                config.MapRoute(
                    name: "Default",
                    template: "{controller}/{action}/{id?}",
                    defaults: new { controller = "App", action = "Index" }
                );
            });
        }
    }

Project.json

{
  "dependencies": {
    "Microsoft.NETCore.App": {
      "version": "1.0.0-rc2-3002702",
      "type": "platform"
    },
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0-rc2-final",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.0-rc2-final",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0-rc2-final",
    "Microsoft.AspNetCore.Mvc": "1.0.0-rc2-final",
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview1-final",
      "type": "build"
    },
    "Microsoft.VisualStudio.Web.CodeGenerators.Mvc": {
      "version": "1.0.0-preview1-final",
      "type": "build"
    }
  },

  "tools": {
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview1-final",
      "imports": "portable-net45+win8+dnxcore50"
    },
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": {
      "version": "1.0.0-preview1-final",
      "imports": "portable-net45+win8+dnxcore50"
    }
  },

  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "dotnet5.6",
        "dnxcore50",
        "portable-net45+win8"
      ]
    }
  },

  "buildOptions": {
    "emitEntryPoint": true,
    "preserveCompilationContext": true
  },

  "runtimeOptions": {
    "gcServer": true
  },

  "publishOptions": {
    "include": [
      "wwwroot",
      "web.config"
    ]
  },

  "scripts": {
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  }
}

_ViewImports.cshtml

@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

请注意，我已经看到问题here，但这与（看似）不同的命名空间和不同的RC有关。链接的问题是dotnet，我使用的是dotnetcore和RC2。

有什么想法吗？问题的基本摘要：除了asp-validation-summary（到目前为止）之外，没有标签助手intellisense，虽然助手（大多数情况下）工作。

Answer 1

这似乎是一个例子“你试过把它关掉再打开吗？”重新启动Visual Studio后，我的助手开始使用正确的颜色突出显示和智能感知。

此外，由于现在正确使用智能感知，我可以看到asp-validation-results的语法与早期版本的核心略有不同。

<div asp-validation-summary="ValidationSummary.ModelOnly"></div>

现在需要：

<div asp-validation-summary="ModelOnly"></div>

Answer 2

我设法通过从下面的链接重复相同的指令然后重新启动visual studio来解决问题。

https://github.com/aspnet/Tooling/issues/484#issuecomment-219807702

HTML帮助程序intellisense不工作dotnetcore RC2

2 个答案: