问题

I want to find out which version of C# I\'m using. If I would be using python I would do something like python -V from the command line, or type:

import sys
print sys.version

In PHP I would do something like this: phpinfo(); in java: java -version

But I was not able to find how to achieve this in C#.

This question does not answer it, although the name suggests that it should.

I got that it depends on the .NET framework, but is there a programmatic way of figuring out my framework? I mean without going to the directory and checking the name of my .NET folders.

回答1:

To get version of framework - look at version of one of main Assemblies i.e.

 Console.Write(typeof(string).Assembly.ImageRuntimeVersion);

Getting version of C# compiler is somewhat harder, but you should be able to guess version by checking what framework version is used.

If you are using command line compiler (csc.exe) you can check help to see version (also you'd need to know Framework version anyway:

C:\Windows\Microsoft.NET\Framework\v4.0.30319>csc /?
Microsoft (R) Visual C# 2010 Compiler version 4.0.30319.1

回答2:

It depends upon the .NET Framework that you use. Check Jon Skeet's answer about Versions.

Here is short version of his answer.

C# 1.0 released with .NET 1.0

C# 1.2 (bizarrely enough); released with .NET 1.1

C# 2.0 released with .NET 2.0

C# 3.0 released with .NET 3.5

C# 4.0 released with .NET 4

C# 5.0 released with .NET 4.5

C# 6.0 released with .NET 4.6

C# 7.0 is released with .NET 4.6.2

C# 7.3 is released with .NET 4.7.2

回答3:

While this isn't answering your question directly, I'm putting this here as google brought this page up first in my searches when I was looking for this info.

If you're using Visual Studio, you can right click on your project, go to project properties and see the version your project is using by going to 'advanced' on the 'build' tab. This should list available versions as well as the one your proj is using.

回答4:

The C# version you are using totally depends upon the .Net version you are using.

if you are using visual studio for development, you get to choose the .net framework version the c# version associated with it comes accordingly

These are the versions of C# known:

C# 1.0 released with .NET 1.0 and VS2002 (January 2002)

C# 1.2 (bizarrely enough); released with .NET 1.1 and VS2003 (April 2003). First version to call Dispose on IEnumerators which implemented IDisposable. A few other small features.

C# 2.0 released with .NET 2.0 and VS2005 (November 2005). Major new features: generics, anonymous methods, nullable types, iterator blocks

C# 3.0 released with .NET 3.5 and VS2008 (November 2007). Major new features: lambda expressions, extension methods, expression trees, anonymous types, implicit typing (var), query expressions

C# 4.0 released with .NET 4 and VS2010 (April 2010). Major new features: late binding (dynamic), delegate and interface generic variance, more COM support, named arguments and optional parameters

C# 5.0 released with .NET 4.5 in August 2012.

Refrence Jon Skeet's C# Versions Answer

回答5:

.NET version through registry

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\ explore the children and look into each version. The one with key 'Full' is the version on the system.

https://support.microsoft.com/en-us/kb/318785 https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx

.NET version through Visual Studio

Help -> About Microsoft Visual Studio -> The .NET version is specified on the top right.

As I understand at this time the Visual studio uses .NET Framework from the OS.

The target .NET Framework version of a project in Visual Studio can be modified with Project Properties -> Application -> Target Framework

Through the dll

If you know the .NET Framework directory e.g. C:\Windows\Microsoft.NET\Framework64\v4.0.30319

Open System.dll, right click -> properties -> Details tab

C# version

Help -> About Microsoft Visual Studio

In the installed products lists there is Visual C#. In my case Visual C# 2015

Visual Studio (Microsoft) ships C# by name Visual C#.

https://msdn.microsoft.com/en-us/library/hh156499.aspx

C# 6, Visual Studio .NET 2015 Current version, see below

回答6:

By default following are corresponding version of C# compilers for Visual Studio:

Visual Studio 2015: C# 6.0
Visual Studio 2013: C# 5.0
Visual Studio 2012: C# 5.0
Visual Studio 2010: C# 4.0
Visual Studio 2008: C# 3.0
Visual Studio 2005: C# 2.0
Visual Studio.NET 2003: C# 1.2
Visual Studio.NET 2002: C# 1.0

You can also modify version please follow below steps.

Open the project properties window:

step 1. Right click on the Project Name
step 2. Select "Properties" (last option in menu)
step 3. Select "Build" from left hand side options and scroll till down
step 4. click on "Advance" button.
step 5. It will open a popup and there you will get "Language Version" dropdown
step 6. Select desired version of C# and Click "OK"

回答7:

If you are using VS2015 then follow below steps to find out the same:

Right click on the project.
Click on the Properties tab.
From properties window select Build option.
In that click on the Advance button.
There you will find out the language version.

Below images show the steps for the same:

Step 1:

Step 2:

回答8:

In order to see the installed compiler version of VC#:

Open Visual Studio command prompt and just type csc then press Enter.

You will see something like following:

Microsoft (R) Visual C# Compiler version 4.0.30319.34209

for Microsoft (R) .NET Framework 4.5

Copyright (C) Microsoft Corporation. All rights reserved.

P.S.: "CSC" stand for "C Sharp Compiler". Actually using this command you run csc.exe which is an executable file which is located in "c:\Windows\Microsoft.NET\Framework\vX.X.XXX". For more information about CSC visit http://www.file.net/process/csc.exe.html

回答9:

For Windows, you run dev at the command/ search program line and select Developer Command Prompt for VS. Then you are going to just run

csc

Now you get information similar to

Microsoft (R) Visual C# Compiler version 2.6.0.62329 (5429b35d)
Copyright (C) Microsoft Corporation. All rights reserved.

For Windows and if you start with cmd terminal

cd C:\Windows\Microsoft.NET\Framework\
dir

Now you see all directories and files in .NET\Framework\ Please, select v... latest and go there, for example,

cd v4.0.30319

Run

csc

You will see information about version of C# compiler, that can be something similar to

Microsoft (R) Visual C# Compiler version 4.7.2556.0
for C# 5
Copyright (C) Microsoft Corporation. All rights reserved.

回答10:

From developer command prompt type

csc -langversion:?

That will display all C# versions supported including the default:

1
2
3
4
5
6
7.0 (default)
7.1
7.2
7.3 (latest)

回答11:

Thanks to @fortesl and this answer

I'm using VS 2019 and it doesn't easily tell you the C# version you are using. I'm working with .Net Core 3.0, and VS 2019 using C# 8 in that environment. But "csc -langversion:?" makes this clear:

D:\>csc -langversion:?
Supported language versions:
default
1
2
3
4
5
6
7.0
7.1
7.2
7.3
8.0 (default)
latestmajor
preview
latest

Not sure what csc -version is identifying:

D:\>csc --version
Microsoft (R) Visual C# Compiler version 3.4.0-beta1-19462-14 (2f21c63b)
Copyright (C) Microsoft Corporation. All rights reserved.

回答12:

Here is an overview of how the .NET framework and compiler versions are related, set and modified. Each project has a target .NET framework version(s), for example version 3.x or 2.x . The .NET framework contains the run time types and components.

The Visual Studio version installation and the .NET framework version determine the compatible c# language version and compiler options that can be used. The default c# version and options used in a Visual Studio project is the latest language version installed that is compatible with the .NET framework version being used.

To view or update the Framework or C# language within a project within Visual Studio 2011:

right click the project within Solution Explorer and select Properties
select 'Application' in the left navigation pane. Under Target framework: is the .NET framework version. Select the down arrow to see all available framework versions.
select 'Build' in the left navigation pane. In the 'General' section of the pane next to 'Language Version:' is the c# compiler language version being used, for example 'default' or c# 5.0
select the down arrow in the 'Language Version:" dropdown to see all available language versions. If 'default' is the c# version being used, the latest compatible c# language version will be used.

To see the exact compiler language version for 'default', enter the following in the developer command prompt for your installed Visual Studio version. For example, from the Windows Start icon select icon: "Developer Command Prompt for VS2011' and enter:

csc -langversion:Default

Microsoft (R) Visual C# Compiler version 4.7.3062.0 for c# 5

来源：https://stackoverflow.com/questions/19532942/which-version-of-c-sharp-am-i-using

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Which version of C# am I using

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