How to fix missing compiler member error Microsoft.CSharp.RuntimeBinder.CSharpArgumentInfo.Create

Question

_{Friday, April 6, 2018 5:55 PM | 3 votes}

I'm using Visual Studio Community 2017. I'm trying to learn how to use C# with Xamarin to write apps. So I followed the tutorial that Microsoft directs you to use with a link within Visual Studio.

So I installed everything and followed the instructions (for the weather app tutorial) up to the point where it says to run a build to make sure there are no errors. But I keep getting the following error.

Error CS0656 Missing compiler required member 'Microsoft.CSharp.RuntimeBinder.CSharpArgumentInfo.Create'

In Core.cs code, the error involves the following bit of code. I get a red underline on the word "results" in the second line.

dynamic results = await DataService.getDataFromService(queryString).ConfigureAwait(false);

if (results ["weather"] != null)

I was wondering how to eliminate this error. I redid the tutorial from scratch, reloading and updating everything, including Visual Studio, but this error still pops up. Thanks.

dwigley

All replies (10)

_{Saturday, April 7, 2018 3:27 AM ✅Answered | 5 votes}

Then add Reference by

Project-->Add Reference-->Browse Tab-->Browse-->Select dll file in dialog-->Check dll-->OK

_{Saturday, April 7, 2018 9:30 AM ✅Answered | 7 votes}

Looks there are different flavours of weatherapp around
https://docs.microsoft.com/en-us/visualstudio/cross-platform/build-apps-with-native-ui-using-xamarin-in-visual-studio
https://github.com/MicrosoftDocs/visualstudio-docs/blob/master/docs/cross-platform/learn-app-building-basics-with-xamarin-forms-in-visual-studio.md
They have in common that one may add NuGet package Microsoft.CSharp:
"... install the Microsoft.CSharp package in the .NET Standard project. This library is necessary to use the C# dynamic data type in a .NET Standard library. ..."

With kind regards

_{Friday, April 6, 2018 6:07 PM | 13 votes}

May This Help you

Add the reference to Microsoft.CSharp as

Project->add reference-->Framework-->Microsoft.CSharp

_{Saturday, April 7, 2018 2:08 AM | 1 vote}

May This Help you

Add the reference to Microsoft.CSharp as

Project->add reference-->Framework-->Microsoft.CSharp

I have Project > Add Reference > Assemblies > Framework

But there is nothing there. It says, "No Framework assemblies were found on the machine."

But I found that I have a Microsoft.CSharp.dll under C:\Windows\WinSxS\...

Thanks.

dwigley

_{Sunday, April 8, 2018 12:48 AM}

Thank you for the help.

dwigley

_{Friday, June 8, 2018 6:31 AM}

Hello dwigley.

"Select dll file in dialog" refers to wich one file ? A lot of dll files appears when the "Browse" dialog is open, so which one I have to choose ?

_{Sunday, December 9, 2018 5:46 PM | 1 vote}



Location of the <g class="gr_ gr_10 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling" data-gr-id="10" id="10">dll</g> would be C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\NETFramework\v4.6\Microsoft.CSharp.dll

Hope this would resolve the problem!

_{Wednesday, February 20, 2019 5:23 PM}

Instead of searching for the right path you can edit your .csproj file adding this:

<PackageReference Include="Microsoft.CSharp" Version="4.5.0" />

I hope it helps :)

_{Tuesday, April 9, 2019 8:33 AM | 4 votes}

Simply download the Microsoft.CSharp Nuget package and rebuild, it worked for me ;)

[Ref. https://stackoverflow.com/questions/49637389/missing-compiler-required-member-microsoft-csharp-runtimebinder-binder-convert ]

I'm using VS2017.

_{Tuesday, July 23, 2019 6:33 PM}

Thanks .. its quick and best way to resolve such issue.

Amarjeet Verma