用于返回机器上 .NET Framework 版本的 PowerShell 脚本? [英] PowerShell script to return versions of .NET Framework on a machine?

问题描述

PowerShell 脚本是什么来返回机器上的 .NET Framework 版本?

What would a PowerShell script be to return versions of the .NET Framework on a machine?

我的第一个猜测是涉及 WMI.还有更好的吗?

My first guess is something involving WMI. Is there something better?

对于每次安装 .NET [在每行上]，只返回最新版本应该是一种单行方式.

It should be a one-liner to return only the latest version for each installation of .NET [on each line].

推荐答案

如果您要使用注册表，则必须递归才能获得 4.x 框架的完整版本.较早的答案都返回我系统上 .NET 3.0 的根编号(其中嵌套在 3.0 下的 WCF 和 WPF 编号更高——我无法解释)，并且无法为 4.0 返回任何内容..

If you're going to use the registry you have to recurse in order to get the full version for the 4.x Framework. The earlier answers both return the root number on my system for .NET 3.0 (where the WCF and WPF numbers, which are nested under 3.0, are higher -- I can't explain that), and fail to return anything for 4.0 ...

对于 .Net 4.5 及更高版本，这又略有变化，所以现在有一个很好的 此处的 MSDN 文章 解释了如何将 Release 值转换为 .Net 版本号，这完全是一场火车事故:-(

For .Net 4.5 and up, this changed slightly again, so there's now a nice MSDN article here explaining how to convert the Release value to a .Net version number, it's a total train wreck :-(

这在我看来是正确的(请注意，它在 3.0 上为 WCF 和 WPF 输出单独的版本号.我不知道那是什么意思).它还会在 4.0 上输出 Client 和 Full(如果您都安装了它们):

This looks right to me (note that it outputs separate version numbers for WCF & WPF on 3.0. I don't know what that's about). It also outputs both Client and Full on 4.0 (if you have them both installed):

Get-ChildItem 'HKLM:SOFTWAREMicrosoftNET Framework SetupNDP' -recurse |
Get-ItemProperty -name Version,Release -EA 0 |
Where { $_.PSChildName -match '^(?!S)p{L}'} |
Select PSChildName, Version, Release

根据 MSDN 文章，您可以构建一个查找表并返回 4.5 之后版本的营销产品版本号:

Based on the MSDN article, you could build a lookup table and return the marketing product version number for releases after 4.5:

$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-Object match 
# to PSChildName -eq "Full":
Get-ChildItem 'HKLM:SOFTWAREMicrosoftNET Framework SetupNDP' -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

事实上，由于我一直不得不更新这个答案，这里有一个脚本可以从该网页的降价源生成上面的脚本(有一点额外的).这可能会在某个时候中断，所以我保留上面的当前副本.

In fact, since I keep having to update this answer, here's a script to generate the script above (with a little extra) from the markdown source for that web page. This will probably break at some point, so I'm keeping the current copy above.

# Get the text from github
$url = "https://raw.githubusercontent.com/dotnet/docs/master/docs/framework/migration-guide/how-to-determine-which-versions-are-installed.md"
$md = Invoke-WebRequest $url -UseBasicParsing
$OFS = "`n"
# Replace the weird text in the tables, and the padding
# Then trim the | off the front and end of lines
$map = $md -split "`n" -replace " installed [^|]+" -replace "s+|" -replace "|$" |
    # Then we can build the table by looking for unique lines that start with ".NET Framework"
    Select-String "^.NET" | Select-Object -Unique |
    # And flip it so it's key = value
    # And convert ".NET FRAMEWORK 4.5.2" to  [version]4.5.2
    ForEach-Object { 
        [version]$v, [int]$k = $_ -replace ".NET Framework " -split "|"
        "    $k = [version]'$v'"
    }

# And output the whole script
@"
`$Lookup = @{
$map
}

# For extra effect we could get the Windows 10 OS version and build release id:
try {
    `$WinRelease, `$WinVer = Get-ItemPropertyValue "HKLM:SOFTWAREMicrosoftWindows NTCurrentVersion" ReleaseId, CurrentMajorVersionNumber, CurrentMinorVersionNumber, CurrentBuildNumber, UBR
    `$WindowsVersion = "`$(`$WinVer -join '.') (`$WinRelease)"
} catch {
    `$WindowsVersion = [System.Environment]::OSVersion.Version
}

Get-ChildItem 'HKLM:SOFTWAREMicrosoftNET Framework SetupNDP' -Recurse |
    Get-ItemProperty -name Version, Release -EA 0 |
    # For The One True framework (latest .NET 4x), change match to PSChildName -eq "Full":
    Where-Object { `$_.PSChildName -match '^(?!S)p{L}'} |
    Select-Object @{name = ".NET Framework"; expression = {`$_.PSChildName}}, 
                @{name = "Product"; expression = {`$Lookup[`$_.Release]}}, 
                Version, Release,
    # Some OPTIONAL extra output: PSComputerName and WindowsVersion
    # The Computer name, so output from local machines will match remote machines:
    @{ name = "PSComputerName"; expression = {`$Env:Computername}},
    # The Windows Version (works on Windows 10, at least):
    @{ name = "WindowsVersion"; expression = { `$WindowsVersion }}
"@

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