如何检测安装了哪些 .NET Framework 版本和服务包?
此处提出了类似的问题,但是它特定于 .NET 3.5。 具体来说,我正在寻找以下内容:
- 确定安装了哪些 .NET Framework 版本和服务包的正确方法是什么?
- 是否有可以使用的注册表项列表?
- 框架版本之间是否存在依赖关系?
A similar question was asked here, but it was specific to .NET 3.5. Specifically, I'm looking for the following:
- What is the correct way to determine which .NET Framework versions and service packs are installed?
- Is there a list of registry keys that can be used?
- Are there any dependencies between Framework versions?
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注册表是 检测是否安装了特定版本的框架的官方方法。
根据您要查找的框架版本,需要更改哪些注册表项:
通常您要查找:
.NET 1.0 除外,其中值是字符串 (
REG_SZ
),而不是数字 (REG_DWORD
)。确定服务包级别遵循类似的模式:
如您所见,如果您在 Windows Media Center 或 Windows XP Tablet Edition 上运行,则确定 .NET 1.0 的 SP 级别会发生变化。 同样,.NET 1.0 使用字符串值,而所有其他值都使用 DWORD。
对于 .NET 1.0,这些键中任意一个的字符串值的格式为#,#,####,#。 最后一个 # 是 Service Pack 级别。
虽然我没有明确要求这一点,但如果您想知道框架的确切版本号,您可以使用这些注册表项:
同样,.NET 1.0 使用字符串值,而所有其他值都使用 DWORD。
附加说明
对于 .NET 1.0,这些键中任一键的字符串值的格式为
#,#,####,#
。 字符串的#,#,####
部分是框架版本。对于 .NET 1.1,我们使用注册表项本身的名称,它代表版本号。
对于
最后,如果您查看依赖项,会发现 .NET 3.0 向 .NET 2.0 添加了附加功能,因此 .NET 2.0 和 .NET 3.0 都必须评估为已安装,才能正确表明 .NET 3.0 已安装。 同样,.NET 3.5 向 .NET 2.0 和 .NET 3.0 添加了附加功能,因此 .NET 2.0、.NET 3.0 和 .NET 3. 都应评估为已安装,以正确表示已安装 .NET 3.5。
.NET 4.5 更新
如果安装了 .NET 4.5,则注册表中不会有
v4.5
项。 相反,您必须检查 HKLM\Software\Microsoft\NET Framework Setup\NDP\v4\Full 键是否包含名为Release
的值。 如果此值存在,则安装 .NET 4.5,否则不安装。 更多详细信息可以在此处和此处。The registry is the official way to detect if a specific version of the Framework is installed.
Which registry keys are needed change depending on the Framework version you are looking for:
Generally you are looking for:
except for .NET 1.0, where the value is a string (
REG_SZ
) rather than a number (REG_DWORD
).Determining the service pack level follows a similar pattern:
As you can see, determining the SP level for .NET 1.0 changes if you are running on Windows Media Center or Windows XP Tablet Edition. Again, .NET 1.0 uses a string value while all of the others use a DWORD.
For .NET 1.0 the string value at either of these keys has a format of #,#,####,#. The last # is the Service Pack level.
While I didn't explicitly ask for this, if you want to know the exact version number of the Framework you would use these registry keys:
Again, .NET 1.0 uses a string value while all of the others use a DWORD.
Additional Notes
for .NET 1.0 the string value at either of these keys has a format of
#,#,####,#
. The#,#,####
portion of the string is the Framework version.for .NET 1.1, we use the name of the registry key itself, which represents the version number.
Finally, if you look at dependencies, .NET 3.0 adds additional functionality to .NET 2.0 so both .NET 2.0 and .NET 3.0 must both evaulate as being installed to correctly say that .NET 3.0 is installed. Likewise, .NET 3.5 adds additional functionality to .NET 2.0 and .NET 3.0, so .NET 2.0, .NET 3.0, and .NET 3. should all evaluate to being installed to correctly say that .NET 3.5 is installed.
.NET 4.0 installs a new version of the CLR (CLR version 4.0) which can run side-by-side with CLR 2.0.
Update for .NET 4.5
There won't be a
v4.5
key in the registry if .NET 4.5 is installed. Instead you have to check if theHKLM\Software\Microsoft\NET Framework Setup\NDP\v4\Full
key contains a value calledRelease
. If this value is present, .NET 4.5 is installed, otherwise it is not. More details can be found here and here.以下知识库文章中有针对此问题的 Microsoft 官方答案:
文章 ID:318785 -最后一次审查:2008 年 11 月 7 日 - 修订版:20.1
如何确定安装了哪些版本的.NET Framework以及是否应用了服务包
不幸的是,它似乎不起作用,因为2.0目录中的mscorlib.dll版本有2.0版本,并且有即使安装了 3.5 SP1,3.0 或 3.5 目录中也没有 mscorlib.dll 版本...为什么 Microsoft 官方答案会如此误导?
There is an official Microsoft answer to this question at the following knowledge base article:
Article ID: 318785 - Last Review: November 7, 2008 - Revision: 20.1
How to determine which versions of the .NET Framework are installed and whether service packs have been applied
Unfortunately, it doesn't appear to work, because the mscorlib.dll version in the 2.0 directory has a 2.0 version, and there is no mscorlib.dll version in either the 3.0 or 3.5 directories even though 3.5 SP1 is installed ... why would the official Microsoft answer be so misinformed?
Framework 4 beta 安装到不同的注册表项。
The Framework 4 beta installs to a differing registry key.
我想检测我的系统上是否安装了 .NET 版本 4.5.2,但我没有找到比 ASoft 更好的解决方案.NET 版本检测器。
显示不同 .NET 版本的此工具的快照:
I wanted to detect for the presence of .NET version 4.5.2 installed on my system, and I found no better solution than ASoft .NET Version Detector.
Snapshot of this tool showing different .NET versions:
枚举
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP
的子项。 每个子项都是 .NET 版本。 如果它存在于计算机上,它应该具有Install=1
值、显示服务包的 SP 值和MSI=1
值(如果它是使用 MSI 安装的)。 (例如,Windows Vista 上的 .NET 2.0 没有最后一个,因为它是操作系统的一部分。)Enumerate the subkeys of
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP
. Each subkey is a .NET version. It should haveInstall=1
value if it's present on the machine, an SP value that shows the service pack and anMSI=1
value if it was installed using an MSI. (.NET 2.0 on Windows Vista doesn't have the last one for example, as it is part of the OS.)对于 64 位操作系统,路径为:
For a 64-bit OS, the path would be:
.NET 4.5.1 更新
现在 .NET 4.5.1 已可用,需要检查注册表中名为 Release 的项的实际值,而不仅仅是其是否存在。 值 378758 表示已安装 .NET Framework 4.5.1。 但是,正如此处所述,该值为 378675在 Windows 8.1 上。
Update for .NET 4.5.1
Now that .NET 4.5.1 is available the actual value of the key named Release in the registry needs to be checked, not just its existence. A value of 378758 means that .NET Framework 4.5.1 is installed. However, as described here this value is 378675 on Windows 8.1.
有一个可用的 GUI 工具,ASoft .NET 版本检测器,它一直被证明是高度可靠的。 它可以通过在命令行上指定 XML 输出的文件名来创建 XML 文件。
您可以将其用于自动化。 它是一个小程序,用非 .NET 相关语言编写,不需要安装。
There is a GUI tool available, ASoft .NET Version Detector, which has always proven highly reliable. It can create XML files by specifying the file name of the XML output on the command line.
You could use this for automation. It is a tiny program, written in a non-.NET dependent language and does not require installation.
我需要找出我的计算机上安装的 .NET Framework 版本,我所做的就是转到控制面板并选择“卸载程序”选项。 之后,我按名称对程序进行排序,找到了 Microsoft .NET Framework 4 Client Profile。
I was needing to find out just which version of .NET framework I had on my computer, and all I did was go to the control panel and select the "Uninstall a Program" option. After that, I sorted the programs by name, and found Microsoft .NET Framework 4 Client Profile.
这是一个用于获取已安装的.NET框架版本的PowerShell脚本
,它是基于如何:确定安装了哪些 .NET Framework 版本。 请使用 Get-FrameworkVersion() 函数获取有关已安装的 .NET Framework 版本的信息。
Here is a PowerShell script to obtain installed .NET framework versions
It was written based on How to: Determine Which .NET Framework Versions Are Installed. Please use THE Get-FrameworkVersion() function to get information about installed .NET framework versions.
使用 Signum.Utilities 库="http://www.signumframework.com" rel="nofollow noreferrer">SignumFramework(您可以独立使用),您可以很好地获取它,而无需自己处理注册表:
Using the Signum.Utilities library from SignumFramework (which you can use stand-alone), you can get it nicely and without dealing with the registry by yourself:
请参阅如何:确定安装了哪些 .NET Framework 版本 (MSDN)。
MSDN 提出了一个函数示例,似乎可以完成版本 1-4 的工作。 根据该文章,该方法的输出为:
请注意,对于“4.5 及更高版本”,还有另一个函数。
See How to: Determine Which .NET Framework Versions Are Installed (MSDN).
MSDN proposes one function example that seems to do the job for version 1-4. According to the article, the method output is:
Note that for "versions 4.5 and later" there is another function.
在 Windows 7 中(它也应该适用于 Windows 8,但我还没有测试过):
转到命令提示符
转到命令提示符的步骤:
在 cmd 中,键入此命令
这将提供安装的 NET Framework 的最新版本。
也可以尝试 Raymond.cc 实用程序 同样如此。
In Windows 7 (it should work for Windows 8 also, but I haven't tested it):
Go to a command prompt
Steps to go to a command prompt:
In cmd, type this command
This gives the latest version of NET Framework installed.
One can also try Raymond.cc Utilties for the same.