C＃错误CS1056：Jenkins或MSbuild出现意外字符'$'

Question

I have a requirement to work with Jenkins for Continues integration, in my code I have written code like

throw new ArgumentNullException($"The {nameof(Id)} cannot be null");

If I build the application it is building successfully but if I build this same application using MsBuild(or) Jenkins,

I am getting error like

Web\WebSharedHelper.cs "C:\WINDOWS\TEMP\.NETFramework,Version=v4.5.2.AssemblyAttributes.cs"
Security\ApiUserToken.cs(46,32): error CS1056: Unexpected character '$' [C:\Program Files (x86)\Jenkins\workspace\OssiaCICD\common\trunk\Cota.Common.Core\Cota.Common.Core.csproj]
Security\ApiUserToken.cs(58,32): error CS1056: Unexpected character '$' [C:\Program Files (x86)\Jenkins\workspace\OssiaCICD\common\trunk\Cota.Common.Core\Cota.Common.Core.csproj]
Security\ApiUserToken.cs(62,26): error CS1056: Unexpected character '$' [C:\Program Files (x86)\Jenkins\workspace\OssiaCICD\common\trunk\Cota.Common.Core\Cota.Common.Core.csproj]
Done Building Project "C:\Program Files (x86)\Jenkins\workspace\OssiaCICD\common\trunk\Cota.Common.Core\Cota.Common.Core.csproj" (default targets) -- FAILED.

I am using v4.0.30319 FrameWork for MSBuild.

Answer 1

我通过在jenkins上使用C:\\Program Files (x86)\\MSBuild\\14.0\\Bin\\MSBuild.exe而不是C:\\Windows\\Microsoft.NET\\Framework64\\v4.0.30319\\MSBuild.exe解决了该问题。

Answer 2

The $ string interpolation symbol is only available in C# 6+. Make sure that you are compiling with C#6. C#6 is supported in MSBuild 14.0+.

Answer 3

If your Visual Studio version is older than 2015 then by default the IDE does not provide C#6 which you need to compile it.

Use Visual Studio 2015 or newer. It should resolve problem.

Answer 4

This problem can be resolved in a couple of ways. Please check my answer here for the first option:

1st https://stackoverflow.com/a/42931980/819153

2nd option - Try to install the visual studio on the tfs where you run the continuous integration, that will save you a lot of headaches

Answer 5

As suggested by a gentleman here, I used C:\\Program Files (x86)\\MSBuild\\14.0\\Bin\\MSBuild.exe instead of C:\\Windows\\Microsoft.NET\\Framework64\\v4.0.30319\\MSBuild.exe over the build agent. And it helped me.

I have MSBuild Version 14.0.25420.1 in the build agent.