编译C ++ / CLI DLL时发出警告

Question

I am developing a C++/CLI targeting .NET 4.0 that references my C# project with the Google Calendar API. The problem is, when I try to compile the C++ .DLL, it gives me the following warning:

The primary reference "GoogleCalendar.dll" could not be resolved because it has an indirect dependency on the framework assembly "System.Net.Http, Version=1.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" which could not be resolved in the currently targeted framework. ".NETFramework,Version=v4.0". To resolve this problem, either remove the reference "GoogleCalendar.dll" or retarget your application to a framework version which contains "System.Net.Http, Version=1.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"

I couldn't find any solutions to this problem, my app.config is already trying to redirect the System.Net.Http:

 <dependentAssembly>
     <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
     <bindingRedirect oldVersion="0.0.0.0-2.2.29.0" newVersion="2.2.29.0" />
 </dependentAssembly>

Any ideas?

Edit: Another problem (don't know if related or not), when I compile my C++ project that references the C#:

warning : Project must install nuget package Microsoft.Bcl, version=1.1.10. For more information, see http://go.microsoft.com/fwlink/?LinkID=317570 .

But won't let me install because it's not native C#.

Answer 1

The google .net client library supports .net framework 4.5+

While we try to support 4.0 not everything is going to work and I haven't tried it in quite sometime. I recommend trying to go back to an older version of the library something around 1.12 I think should support 4.0

start here https://www.nuget.org/packages/Google.Apis.Calendar.v3/1.12.0.472 and work your way up see if you can find the version where it stops working.