DebuggerDisplayAttribute 在 VS 2017 中无效

DebuggerDisplayAttribute has no effect in VS 2017

似乎 DebuggerDisplayAttribute 在 Visual Studio 2017 (15.9.4) 与 Resharper 2018.2.3 中没有任何效果。

这是一个非常基本的控制台应用程序。尽管有属性,dt 变量在我的手表 window.
中显示为 {2/14/2019 10:35:38 AM}

[assembly: DebuggerDisplay("Foo", Target = typeof(DateTime))]

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            var dt = DateTime.Now;
            Debugger.Break();
        }
    }
}

如果我使用 ILSpy 反编译我的控制台应用程序,我可以看到应用了这些属性:

[assembly: Debuggable(
    DebuggableAttribute.DebuggingModes.Default | 
    DebuggableAttribute.DebuggingModes.DisableOptimizations | 
    DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints | 
    DebuggableAttribute.DebuggingModes.EnableEditAndContinue)]
[assembly: DebuggerDisplay("Foo", Target = typeof(DateTime))]

为什么属性没有做任何事情?我什至如何开始调试它?

编辑:按要求完成源文件。

ConsoleApp1.csproj

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="$(MSBuildExtensionsPath)$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)$(MSBuildToolsVersion)\Microsoft.Common.props')" />
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProjectGuid>{EBBA72C6-5087-4D8E-9F2C-B968ABD59EAA}</ProjectGuid>
    <OutputType>Exe</OutputType>
    <RootNamespace>ConsoleApp1</RootNamespace>
    <AssemblyName>ConsoleApp1</AssemblyName>
    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
    <FileAlignment>512</FileAlignment>
    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
    <Deterministic>true</Deterministic>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\Debug\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>bin\Release\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="System" />
    <Reference Include="System.Core" />
    <Reference Include="System.Xml.Linq" />
    <Reference Include="System.Data.DataSetExtensions" />
    <Reference Include="Microsoft.CSharp" />
    <Reference Include="System.Data" />
    <Reference Include="System.Net.Http" />
    <Reference Include="System.Xml" />
  </ItemGroup>
  <ItemGroup>
    <Compile Include="Program.cs" />
    <Compile Include="Properties\AssemblyInfo.cs" />
  </ItemGroup>
  <ItemGroup>
    <None Include="App.config" />
  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
</Project>

app.config:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
    </startup>
</configuration>

AssemblyInfo.cs:

using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
[assembly: AssemblyTitle("ConsoleApp1")]
[assembly: AssemblyDescription("")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("")]
[assembly: AssemblyProduct("ConsoleApp1")]
[assembly: AssemblyCopyright("Copyright ©  2019")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]
[assembly: ComVisible(false)]
[assembly: Guid("ebba72c6-5087-4d8e-9f2c-b968abd59eaa")]
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]

我已经根据您提供的资源构建了项目,但无法重现问题:

这意味着在 VS 2017 的全新安装中,该功能必须有效。所以你安装的 Visual Studio 肯定有问题。

在评论中调查后,我建议进行安装修复,应该可以解决问题。