[System.Diagnostics.FileVersionInfo]::GetVersionInfo("$Path").FileVersion not working (as expected).

[RokeJulianLockhart]

Per microsoft/winget-pkgs#112057 (comment)

$URI = 'https://github.com/Fleex255/PolicyPlus/releases/download/June2021/PolicyPlus.exe'
$OutFile = [System.IO.Path]::GetFileName("$URI")
Invoke-WebRequest -Uri "$URI" -OutFile "$OutFile"
[System.Diagnostics.FileVersionInfo]::GetVersionInfo("$OutFile").FileVersion # https://stackoverflow.com/a/30708/9731176

produces

PS /home/rokejulianlockhart/Downloads> $URI = 'https://github.com/Fleex255/PolicyPlus/releases/download/June2021/PolicyPlus.exe'
PS /home/rokejulianlockhart/Downloads> $OutFile = [System.IO.Path]::GetFileName("$URI")
PS /home/rokejulianlockhart/Downloads> Invoke-WebRequest -Uri "$URI" -OutFile "$OutFile"
PS /home/rokejulianlockhart/Downloads> [System.Diagnostics.FileVersionInfo]::GetVersionInfo("$OutFile").FileVersion     
MethodInvocationException: Exception calling "GetVersionInfo" with "1" argument(s): "/home/rokejulianlockhart/PolicyPlus.exe"

Am I using this incorrectly?

PS /home/rokejulianlockhart/Downloads> [System.Diagnostics.FileVersionInfo]::GetVersionInfo

OverloadDefinitions
-------------------
static System.Diagnostics.FileVersionInfo GetVersionInfo(string fileName)


PS /home/rokejulianlockhart/Downloads>

works, so it's not like the functionality isn't present...

[svick]

As far as I can tell, the problem is that PowerShell current directory (pwd) is not the same as .Net current directory ([System.IO.Directory]::GetCurrentDirectory()). And the .Net class FileVersionInfo expects the path relative to the .Net current directory, which is why it can't find the file.

One way that works for me is to use the absolute path of the file:

> [System.Diagnostics.FileVersionInfo]::GetVersionInfo((gci "$OutFile").FullName).FileVersion
1.0.0.0

Though I don't know PowerShell that well, so there may be a better way to do this.

[RokeJulianLockhart]

Yeah, @svick, you're right:

Set-Location
$PWD
[System.IO.Directory]::GetCurrentDirectory()

PS /home/rokejulianlockhart> $PWD                                    

Path
----
/home/rokejulianlockhart

PS /home/rokejulianlockhart> [System.IO.Directory]::GetCurrentDirectory()
/home/rokejulianlockhart

versus

Set-Location './Downloads'
$PWD
[System.IO.Directory]::GetCurrentDirectory()

PS /home/rokejulianlockhart> cd Downloads       
PS /home/rokejulianlockhart/Downloads> $PWD                                        

Path
----
/home/rokejulianlockhart/Downloads

PS /home/rokejulianlockhart/Downloads> [System.IO.Directory]::GetCurrentDirectory()
/home/rokejulianlockhart
PS /home/rokejulianlockhart/Downloads>

Would this be considered a bug? I'd consider it to be such.

---

$URI = 'https://github.com/Fleex255/PolicyPlus/releases/download/June2021/PolicyPlus.exe'
$OutFile = [System.IO.Path]::GetFileName("$URI")
Invoke-WebRequest -Uri "$URI" -OutFile "$OutFile"

# https://stackoverflow.com/a/30708/9731176
[System.Diagnostics.FileVersionInfo]::GetVersionInfo(`
    (Get-ChildItem "$OutFile").FullName`
    ).FileVersion

PS /home/rokejulianlockhart> cd Downloads
PS /home/rokejulianlockhart/Downloads> $URI = 'https://github.com/Fleex255/PolicyPlus/releases/download/June2021/PolicyPlus.exe'
PS /home/rokejulianlockhart/Downloads> $OutFile = [System.IO.Path]::GetFileName("$URI")
PS /home/rokejulianlockhart/Downloads> Invoke-WebRequest -Uri "$URI" -OutFile "$OutFile"
PS /home/rokejulianlockhart/Downloads>                                                                                  
PS /home/rokejulianlockhart/Downloads> # https://stackoverflow.com/a/30708/9731176
PS /home/rokejulianlockhart/Downloads> [System.Diagnostics.FileVersionInfo]::GetVersionInfo(`
>>     (Get-ChildItem "$OutFile").FullName`
>>     ).FileVersion
1.0.0.0
PS /home/rokejulianlockhart/Downloads>

[svick]

I don't know if it's a bug, but if it is, I think it would be in PowerShell.

[RokeJulianLockhart]

@svick, seems like it's actually already been debated – https://stackoverflow.com/a/11248149/9731176. Thanks.