如何找到 .NET 版本？

Question

How do I find out which version of .NET is installed?

I'm looking for something as simple as java -version that I can type at the command prompt and that tells me the current version(s) installed.

I better add that Visual Studio may not be installed - this is typically something that I want to know about a client machine.

Answer 1

There is an easier way to get the exact version .NET version installed on your machine from a cmd prompt. Just follow the following instructions;

1. Open the command prompt (ie Windows + R → type "cmd").
2. Type the following command, all on one line:

reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP"

(This will list all the .NET versions.)

3. If you want to check the latest .NET 4 version.
4. Type following instruction, on a single line:

reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\full" /v version

Please find the attached image below to see how it is shown.

Answer 2

Just type any one of the below commands to give you the latest version in the first line.

1. CSC
2. GACUTIL /l ?
3. CLRVER

You can only run these from the Visual Studio Command prompt if you have Visual Studio installed, or else if you have the .NET framework SDK, then the SDK Command prompt.

4. wmic product get description | findstr /C:".NET Framework"
5. dir /b /ad /o-n %systemroot%\Microsoft.NET\Framework\v?.*

The last command (5) will list out all the versions (except 4.5) of .NET installed, latest first .
You need to run the 4th command to see if .NET 4.5 is installed.

Another three options from the PowerShell command prompt is given below.

6.   [environment]::Version
7.   $PSVersionTable.CLRVersion
8.   gci 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP' -recurse | gp -name Version,Release -EA 0 |
     where { $_.PSChildName -match '^(?!S)\p{L}'} | select PSChildName, Version, Release

The last command (8) will give you all versions, including .NET 4.5.

Answer 3

This answer is applicable to .NET Core only!

Typing dotnet --version in your terminal of choice will print out the version of the .NET Core SDK in use.

Learn more about the dotnet command here .

Answer 4

Before going to a command prompt, please follow these steps...

Go to "C:/Windows/Microsoft.NET/Framework" → Inside this folder, there will be folder(s) like (all or any):

• v1.0.3705
• v2.0.50727
• v3.5
• v4.0.30319

Your latest .NET version would be in the highest v number folder, so if "v4.0.30319" is available that would hold your latest .NET framework. However, the "v4.0.30319" does not mean that you have the .NET framework version 4.0. The "v4.0.30319" is your Visual C# compiler version, therefore, in order to find the .NET framework version do the following.

Go to a command prompt and follow this path:

C:\Windows\Microsoft.NET\Framework\v4.0.30319 (or whatever the highest v number folder)

C:\Windows\Microsoft.NET\Framework\v4.0.30319 > csc.exe

Output:

Microsoft (R) Visual C# Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5 Copyright (C) Microsoft Corporation. All rights reserved.

Example below:

Answer 5

.NET 版本检测器是一个 GUI 实用程序，它显示安装了框架的六个（！）版本中的哪一个。

Answer 6

For the version of the framework that is installed, it varies depending on which service packs and hotfixes you have installed. Take a look at this MSDN page for more details. It suggests looking in %systemroot%\Microsoft.NET\Framework to get the version.

Environment.Version will programmatically give you the version of the CLR.

Note that this is the version of the CLR, and not necessarily the same as the latest version of the framework you have installed (.NET 3.0 and 3.5 both use v2 of the CLR).

Answer 7

MSDN details it here very nicely on how to check it from registry:

To find .NET Framework versions by viewing the registry (.NET Framework 1-4)

1. On the Start menu, choose Run.
2. In the Open box, enter regedit.exe.You must have administrative credentials to run regedit.exe.

3. In the Registry Editor, open the following subkey:

   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP

The installed versions are listed under the NDP subkey. The version number is stored in the Version entry. For the .NET Framework 4 the Version entry is under the Client or Full subkey (under NDP), or under both subkeys.

To find .NET Framework versions by viewing the registry (.NET Framework 4.5 and later)

1. On the Start menu, choose Run.
2. In the Open box, enter regedit.exe. You must have administrative credentials to run regedit.exe.

3. In the Registry Editor, open the following subkey:

   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full

Note that the path to the Full subkey includes the subkey Net Framework rather than .NET Framework

Check for a DWORD value named Release . The existence of the Release DWORD indicates that the .NET Framework 4.5 or newer has been installed on that computer.

Note : The last row in the above snapshot which got clipped reads On all other OS versions: 461310 . I tried my level best to avoid the information getting clipped while taking the screenshot but the table was way too big.

Answer 8

Just type the following in the command line:

dir /b /ad /o-n %systemroot%\Microsoft.NET\Framework\v?.*

Your dotnet version will be shown as the highest number.

Answer 9

If you open a command prompt and type the following two commands, all framework versions that are installed on the current machine will be listed (each one is stored in a separate directory within this directory).

cd %systemroot%\Microsoft.NET\Framework

dir /A:D

Answer 10

If you do this fairly frequently (as I tend to do) you can create a shortcut on your desktop as follows:

1. Right click on the desktop and select New → Shortcut .
2. In the location field, paste this string: powershell.exe -noexit -command "gci 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP' -recurse | gp -name Version,Release -EA 0 | where { $_.PSChildName -match '^(?!S)\p{L}'} | select PSChildName, Version, Release" (this is from Binoj Antony's post ).
3. Hit Next . Give the shortcut a name and Finish .

(NOTE: I am not sure if this works for 4.5, but I can confirm that it does work for 4.6, and versions prior to 4.5.)

Answer 11

My god, so much mess to find version of installed .net framework?

Windows > Search > Visual Studio Installer > for installed version of VS, tap on More > Modify > Individual Components and see it there:

Answer 12

To just get the installed version(s) at the command line, I recommend using net-version .

• It's just a single binary .
• It uses the guidelines provided my Microsoft to get version information.
• It doesn't require the SDK to be installed.
• Or the Visual Studio command prompt.
• It doesn't require you to use regedit and hunt down registry keys yourself. You can even pipe the output in a command line tool if you need to.

Source code is available on github.com

Full disclosure: I created this tool myself out of frustration.

Answer 13

Here is the Power Shell script which I used by taking the reference of:

https://stackoverflow.com/a/3495491/148657

$Lookup = @{
    378389 = [version]'4.5'
    378675 = [version]'4.5.1'
    378758 = [version]'4.5.1'
    379893 = [version]'4.5.2'
    393295 = [version]'4.6'
    393297 = [version]'4.6'
    394254 = [version]'4.6.1'
    394271 = [version]'4.6.1'
    394802 = [version]'4.6.2'
    394806 = [version]'4.6.2'
    460798 = [version]'4.7'
    460805 = [version]'4.7'
    461308 = [version]'4.7.1'
    461310 = [version]'4.7.1'
    461808 = [version]'4.7.2'
    461814 = [version]'4.7.2'
    528040 = [version]'4.8'
    528049 = [version]'4.8'
}

# For One True framework (latest .NET 4x), change the Where-Oject match 
# to PSChildName -eq "Full":
Get-ChildItem 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP' -Recurse |
  Get-ItemProperty -name Version, Release -EA 0 |
  Where-Object { $_.PSChildName -match '^(?!S)\p{L}'} |
  Select-Object @{name = ".NET Framework"; expression = {$_.PSChildName}}, 
@{name = "Product"; expression = {$Lookup[$_.Release]}}, 
Version, Release

The above script makes use of the registry and gives us the Windows update number along with .Net Framework installed on a machine.

Reference: https://docs.microsoft.com/en-us/dotnet/framework/migration-guide/how-to-determine-which-versions-are-installed#to-find-net-framework-versions-by-querying-the-registry-in-code-net-framework-45-and-later

Here are the results for the same when running that script on two different machines

1. Where .NET 4.7.2 was already installed:

2. Where .NET 4.7.2 was not installed:

Answer 14

打开 cmd 提示符类型：

dotnet --info

Answer 15

试试 Scott Hanselman 的.NET Checker 。

Answer 16

It is exactly like java. Open up the terminal and execute following command

dotnet --version

Answer 17

clrver is an excellent one. Just execute it in the .NET prompt and it will list all available framework versions.

Answer 18

If you'r developing some .Net app (for ex. web app), you can make 1 line of error code (like invoke wrong function name) and reload your page, the .Net version will be show

Answer 19

For anyone running Windows 10 1607 and looking for .net 4.7 . Disregard all of the above.

It's not in the Registry , C:\Windows\Microsoft.NET folder or the Installed Programs list or the WMIC display of that same list.

Look for "installed updates" KB3186568.

Answer 20

Per Microsoft in powershell:

Get-ChildItem "hklm:SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\" | Get-ItemPropertyValue -Name Release | % { $_ -ge 394802 }

See the table at this link to get the DWORD value to search for specific versions:

https://docs.microsoft.com/en-us/dotnet/framework/migration-guide/how-to-determine-which-versions-are-installed#ps_a

Answer 21

If you have installed visual studio on your machine,

Just go to Help > About Microsoft Visual Studio

You will see info about .NET version that IDE is using.

Answer 22

Open cmd on your pc

After just text this command;

"dotnet --version"

Answer 23

Run the following command on CMD:

• do.net --list-sdks

It will display all installed versions of .net, as seen in image above. You can also run the following command below to see the .net version that is in use:

• do.net --version

Answer 24

There is an easier way to get the exact version .NET version installed on your machine from a cmd prompt. Just follow the following instructions;

Open the command prompt (ie Windows + R → type “cmd”) and type the following command, all on one line: %windir%\\Microsoft.NET\\FrameWork, and then navigating to the directory with the latest version number.

Refer to http://dotnettec.com/check-dot-net-framework-version/