DebuggerDisplayAttribute在VS 2017中无效

似乎DebuggerDisplayAttribute在带有Resharper 2018.2.3的Visual Studio 2017（15.9.4）中没有任何作用。

• 将属性放在AssemblyInfo.cs或Program.cs中没有明显的作用。
• 我的目标是.Net Framework 4.7.2。更改框架版本也没有明显的效果。
• 我已经验证了在“工具”->“选项”->“调试”->“常规”中未选中“在变量窗口中显示对象的原始结构” 。为了确定，我什至检查了它，关闭了VS，重新打开了VS，然后取消了检查。没有效果。

• 将属性放在自定义类上确实有效果。看来该属性仅在装配级时才被忽略。
• 这在VS 2015（与Resharper的相同版本）中按预期工作。
• 以安全模式启动VS 2017（使用devenv.exe /safemode）无效。
• 更新VS 15.9.4-> 15.9.7无效。

这是一个非常基本的控制台应用程序。尽管具有属性，该dt变量仍显示{2/14/2019 10:35:38 AM}在我的监视窗口中。

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

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

如果使用ILSpy来反编译控制台应用程序，则可以看到以下属性：

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

为什么属性不做任何事情？我什至如何开始调试呢？

编辑：根据要求完成源文件。

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")]