克利弗就是个很好的例子。只要在. net提示符中执行它，它就会列出所有可用的框架版本。

试试Scott Hanselman的. net Checker。

. net Version Detector是一个GUI实用程序，用于显示框架的六个(!)版本中哪个被安装了。

对于所安装的框架版本，它取决于您安装的服务包和修复程序。更多细节请查看MSDN页面。建议在%systemroot%\Microsoft中查找。NET\Framework获取版本。

环境。Version将以编程方式为您提供CLR的版本。

请注意，这是CLR的版本，不一定与您安装的框架的最新版本相同(。NET 3.0和3.5都使用CLR的v2版本)。

这个答案只适用于。net Core !

在您选择的终端中输入dotnet——version将打印出所使用的. net Core SDK的版本。

在这里了解更多关于dotnet命令的信息。

MSDN详细介绍了如何从注册表中检查它:

To find .NET Framework versions by viewing the registry (.NET Framework 1-4) On the Start menu, choose Run. In the Open box, enter regedit.exe.You must have administrative credentials to run regedit.exe. 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) On the Start menu, choose Run. In the Open box, enter regedit.exe. You must have administrative credentials to run regedit.exe. 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.

注意:上面快照中被剪切的最后一行在所有其他操作系统版本上为:461310。我尽我最大的努力避免在截屏时信息被剪切，但表格太大了。