CSC version at computer

Question

I making fast changes in my code via Visual Studio Code. As you know it doesn't have build-in compiler so I using CSC via CMD.

It's working good only for ( code <= C# 4.6 & code <= .NET 4.5 ) because that version of CSC I have.

And there is problem because I writing in new C# 6.0 and .NET 4.6 and can't compile via CSC. I have installed VS 2015 with .NET 4.6 and compilie via VS 2015 working good.

I can't find CSC in version witch support CSC in version .NET 4.6 in my computer. I have .NET 4.6 in Windows Registry(regedit).

I'll randomly guess you are using the wrong csc.exe, there are lots of them. You can see the one VS2015 uses when you change the build verbosity to Normal. Tools > Options > Projects and Solutions > Build and Run. It runs C:\Program Files (x86)\MSBuild\14.0\bin\csc.exe — Hans Passant, Jul 29 '15 at 11:13
@HansPassant Yeah, but that's only there when you have VS2015 installed. It's a shame the compiler is no longer a part of .NET Framework itself... — Luaan, Jul 29 '15 at 11:15
Hmya, not everybody likes open source I suppose: "what, I have to *compile* it?" Yes. — Hans Passant, Jul 29 '15 at 11:30

Pavel Krymets · Accepted Answer · 2015-07-29T11:07:20.437

6

csc.exe compiler used by Visual Studio 2015 is located at c:\Program Files (x86)\MSBuild\14.0\bin\csc2.exe

edited Jul 29 '15 at 11:07

answered Jul 29 '15 at 11:04

Pavel Krymets

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csc.exe in this folder v. 4.6.81.0 and it is .NET 4.5 – Nerf Jul 29 '15 at 11:06
@Nerf, Sorry, checked again, its at `c:\Program Files (x86)\MSBuild\14.0\bin\csc2.exe` – Pavel Krymets Jul 29 '15 at 11:07
Hard to guess where that came from. I suspect most users, like me, can only find csc.exe back in that directory. Watch out for VS2015 or Roslyn beta versions, I guess. – Hans Passant Jul 29 '15 at 12:16
In my case same directory, but file name is back to csc.exe. Compiles C# 6.0 properly. – Sebastian K May 29 '16 at 18:28

score 4 · Answer 2 · answered Jul 29 '15 at 11:09

CSC is no longer used for compilation of C# 6+. The new standard compiler is Roslyn now.

In fact, csc itself tells you this:

This compiler is provided as part of the Microsoft (R) .NET Framework, but only supports language versions up to C# 5, which is no longer the latest version. For compilers that support newer versions of the C# programming language, see http://go.microsoft.com/fwlink/?LinkID=533240

You need to download Roslyn (either using the link above and compiling it for yourself using MSBuild, or via NuGet at http://www.nuget.org/packages/Microsoft.CodeAnalysis.CSharp/) and use it to compile your programs from now on.

CSC version at computer

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