[THRIFT-5143] Can not use .NET std Thrift.dll in .NET Framework due to missing dependency

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 0.13.0
• Component/s: netstd - Library
• Assignee: Unassigned
• Reporter: Mario Emmenlauer
• Created: 19/Mar/20 10:53
• Updated: 07/Apr/20 17:06

Description

I could build Thrift .NET Std quite easily with dotnet on MSVC and Linux. However when trying to use it in a .NET Framework project, I can not get past the following error:

src\gen-netstd\MyThriftAPI.cs(54,23): error CS0012: The type 'ValueTask<>' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Threading.Tasks.Extensions, Version=4.2.0.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. [C:\data\Debug\WPFGui\WPFGui_w0ude4yv_wpftmp.csproj]

I've spent by now almost a full day to try different variations of workarounds. What I could find on the web was:

• Switch to a newer .NET Framework. But 4.7.2 did not help.
• Remove the reference to "System.Threading.Tasks.Extensions" from Thrift. This causes an alternative transitive reference to "System.Threading.Tasks.Extensions, Version=4.2.0.0" (last digit zero instead of one) instead, but does not help
• Build Thrift with netstandard2.1 instead of netstandard2.0. This causes further undefined references of netstandard2.0.
• Install "System.Threading.Tasks.Extensions" 4.5.3 from NuGet. This did not make any difference

 I'm at the end of my wit here. Did other people experience this problem, and/or who can use Thrift for .NET Std in a WPF application? Any tips or tricks? Help would be greatly appreciated!