Not writing to Seq with Net461 and Configuration installed

This goes in the thoroughly weird bucket and not really expecting any possible fix, but wanted to at least let other people know. If anything, this may be an issue with the Microsoft Configurations package. If all of the following are true;

• You are using the new csproj format in VS2017
• You are targeting net461
• You also install Microsoft.Extensions.Configurations

then the seq sink will silently fail to write to Seq. All the other bits of serilog works fine, just nothing gets sent to Seq. This may be related to https://github.com/serilog/serilog-sinks-seq/issues/56, though adding <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects> doesn’t seem to help.

Given this console app:

class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Hello World!");
        var logConfig = new LoggerConfiguration().WriteTo.Seq("https://myserver", apiKey: "XXX");
        Log.Logger = logConfig.CreateLogger();
        Log.Information("TEST");
        Log.CloseAndFlush();
    }
}

This .csproj does not work

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

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net461</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.Extensions.Configuration" Version="1.1.1" />
    <PackageReference Include="Serilog.Sinks.Seq" Version="3.2.0" />
  </ItemGroup>

</Project>

This .csproj works:

(removed Microsoft.Extensions.Configuration)

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

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net461</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Serilog.Sinks.Seq" Version="3.2.0" />
  </ItemGroup>

</Project>

This .csproj works:

(Targeting Net 4.5.1 instead of 4.6.1)

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

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net451</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.Extensions.Configuration" Version="1.1.1" />
    <PackageReference Include="Serilog.Sinks.Seq" Version="3.2.0" />
  </ItemGroup>

</Project>

[nblumhardt]

@flytzen I’ve had some succeess finding a way around this (I hope) - https://www.nuget.org/packages/Serilog.Sinks.Seq/3.3.0-dev-00110 should cover it, it’d be interesting to hear whether it works in your project. Cheers!

[flytzen]

Yep, that seems to have fixed it. Interestingly, I tried the same thing you did with adding a specific NET46 TFM but couldn’t get it to work. However, I didn’t touch the dependencies for netstandard1.x, so wonder if maybe that made a difference. Or maybe I just messed up my tests 😃

Thanks for resolving this!