.NET Core F＃項目不會寫入TraceSource

我無法讓我的F＃項目寫入TraceSource。.NET Core F＃項目不會寫入TraceSource

這裏是我的F＃代碼：

use logFileStream = new FileStream("log.txt", FileMode.Append, FileAccess.Write) 
(
    use logFileListener = new TextWriterTraceListener(logFileStream) 
    (
     let traceSource = TraceSource("Test", SourceLevels.All) 
     traceSource.Listeners.Add(logFileListener) |> ignore 
     traceSource.TraceEvent(TraceEventType.Verbose, 1, "This is a test.") 
    ) 
)

這裏是我的F＃項目：

<Project Sdk="FSharp.NET.Sdk;Microsoft.NET.Sdk"> 
    <PropertyGroup> 
    <OutputType>Exe</OutputType> 
    <TargetFramework>netcoreapp1.1</TargetFramework> 
    </PropertyGroup> 
    <ItemGroup> 
    <Compile Include="Program.fs" /> 
    </ItemGroup> 
    <ItemGroup> 
    <PackageReference Include="FSharp.Core" Version="4.1.*" /> 
    <PackageReference Include="FSharp.NET.Sdk" Version="1.0.*" PrivateAssets="All" /> 
    <PackageReference Include="System.Diagnostics.TextWriterTraceListener" Version="4.3.0" /> 
    <PackageReference Include="System.Diagnostics.Tracing" Version="4.3.0" /> 
    </ItemGroup> 
</Project>

爲什麼log.txt的空？

來源

2017-08-12 Wally

我需要將<DefineConstants>TRACE</DefineConstants>添加到我的項目文件中的PropertyGroup。

<PropertyGroup> 
    <OutputType>Exe</OutputType> 
    <TargetFramework>netcoreapp1.1</TargetFramework> 
    <DefineConstants>TRACE</DefineConstants> 
</PropertyGroup>

來源

2017-08-12 18:05:32 Wally

.NET Core F＃項目不會寫入TraceSource

回答

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