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C# Interactive: The type 'ValueTuple' exists in both 'mscorlib' and 'System.ValueTuple' #21156

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mazhou-msft opened this issue Jul 26, 2017 · 4 comments · Fixed by #21851
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C# Interactive: The type 'ValueTuple' exists in both 'mscorlib' and 'System.ValueTuple' #21156

mazhou-msft opened this issue Jul 26, 2017 · 4 comments · Fixed by #21851
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@tmat @jcouv
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4 - In Review A fix for the issue is submitted for review. Area-Interactive New Language Feature - Tuples Tuples
Milestone
15.5

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@mazhou-msft
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Version Used:
VS 2017.3 Preview 4+ (26723.0 d15rel)
OS 10.0.16251.0 (rs_prerelease)
Steps to Reproduce:

  1. Open VS
  2. View -> Other Windows -> C# Interactive to open C# Interactive Window
  3. Type: ValueTuple.Create() and wait for the error to report

Expected Behavior:
There should be no live errors and the code executes after pressing ENTER.

Actual Behavior:
There is a live compilation error even the above code can be successfully committed and executed.

Error message: The type 'System.ValueTuple' exists in both assembly 'System.ValueTuple, v4.0.1.0' and 'mscorlib, v4.0.0.0'.

Looks like the System.ValueTuple.dll is by default imported even with .NET Framework 4.7 on Windows 10 (it should not be referenced by default if on Windows 10 with net47.)
@jcouv jcouv mentioned this issue Jul 29, 2017
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@jinujoseph jinujoseph added this to the 15.5 milestone Jul 31, 2017
@jcouv jcouv assigned tmat and jcouv and unassigned tmat Jul 31, 2017
@pdelvo
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pdelvo commented Aug 13, 2017

As far as I know this should be fixed: dotnet/announcements#25

@jcouv jcouv mentioned this issue Aug 30, 2017
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@jcouv
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jcouv commented Aug 31, 2017

image

@jcouv jcouv mentioned this issue Aug 31, 2017
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@jcouv jcouv added the 4 - In Review A fix for the issue is submitted for review. label Aug 31, 2017
@jcouv
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jcouv commented Aug 31, 2017

Fixed by #21851 as part of 15.5

@mazhou-msft
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Confirm it is now working good.

@vsfeedback vsfeedback mentioned this issue Mar 6, 2018
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@AMGMNPLK AMGMNPLK mentioned this issue May 5, 2020
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4 - In Review A fix for the issue is submitted for review. Area-Interactive New Language Feature - Tuples Tuples
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Milestone
15.5
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Interactive window to prefer tuple types from mscorlib jcouv/roslyn
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@tmat @Pilchie @pdelvo @jinujoseph @jcouv @mazhou-msft