Found conflicts between different versions of "Microsoft.AspNetCore.Http.Abstractions"

[juniormayhe]

Issue Summary

Added Sendgrid to NET Standard project and Visual Studio shows

1>------ Rebuild All started: Project: MyProject, Configuration: Debug Any CPU ------
1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets(2041,5): warning MSB3277: Found conflicts between different versions of "Microsoft.AspNetCore.Http.Abstractions" that could not be resolved.  These reference conflicts are listed in the build log when log verbosity is set to detailed.
1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets(2041,5): warning MSB3277: Found conflicts between different versions of "Microsoft.AspNetCore.Http.Features" that could not be resolved.  These reference conflicts are listed in the build log when log verbosity is set to detailed.
1>MyProject -> c:\projects\MyProject\bin\Debug\netstandard2.0\MyProject.dll
1>Done building project "MyProject.csproj".
========== Rebuild All: 1 succeeded, 0 failed, 0 skipped ==========

Steps to Reproduce

1. Create a new NET Standard 2.0 project
2. Add a project with a static class and a extension method with these arguments

public static class MyServiceExtension
    {
        private static ILogger<EmailService> _logger;
        public static IServiceCollection AddEmailService(this IServiceCollection services,
            IHostingEnvironment hostingEnvironment,
            IConfiguration configuration)
            services.Configure<EmailSettings>(configuration.GetSection("MySettings"));//this comes from calle's appsettings.json
            //some dummy code
            ...

2. Add Nuget package for Microsoft.Extensions.Options.ConfigurationExtensions for services.Configure method

3. Add assembly Microsoft.AspNetCore.Hosting.Abstractions for IHostingEnvironment

4. Add assembly Microsoft.Extensions.Configuration.Abstractions for IConfiguration

5. Add assembly Microsoft.Extensions.Logging.Abstractions for ILogger

6. Add assembly Microsoft.Extensions.DependencyInjection.Abstractions for IServiceCollection

7. Build project and check build output or Error List tab

Two warnings appear:

warning MSB3277: Found conflicts between different versions of "Microsoft.AspNetCore.Http.Abstractions"
warning MSB3277: Found conflicts between different versions of "Microsoft.AspNetCore.Http.Features"

Technical details:

• sendgrid-csharp Version: 9.9.0
• Platform .NET Standard
• .NET Version: 2.0
• Visual Studio 2017 15.5.7
• Windows 10.0.16299.125

[thinkingserious]

Hello @juniormayhe,

Thanks for reporting this!

Does the project still build?

With Best Regards,

Elmer

[juniormayhe]

Yes it is building fine. Just worried about these warnings

[thinkingserious]

OK, thanks for the clarification. I've added this to our backlog for further investigation.

[RodDaSilva]

Has there been any update on this bug? I am getting it as well with version 9,10 of SendGrid librarty.

[jwisener]

Same here, we are getting this as well.

[nhustak]

Yeah I have 7 warnings that always come up like this still. Compiles fine but it clouds the water on looking for real warnings.

[childish-sambino]

I've been unable to recreate the issue locally, but I believe it was fixed by #754