Get file version and assembly version of DLL files in the current directory and all sub directories

Question

I would like to be able to get the file version and assembly version of all DLL files within a directory and all of its subdirectories. I'm new to programming, and I can't figure out how to make this loop work.

I have this PowerShell code to get the assembly version (taken from a forum):

$strPath = 'c:\ADMLibrary.dll' $Assembly = [Reflection.Assembly]::Loadfile($strPath)  $AssemblyName = $Assembly.GetName() $Assemblyversion = $AssemblyName.version 

And this as well:

$file = Get-ChildItem -recurse | %{ $_.VersionInfo } 

How can I make a loop out of this so that I can return the assembly version of all files within a directory?

Answer 1

Here is a pretty one liner:

Get-ChildItem -Filter *.dll -Recurse | Select-Object -ExpandProperty VersionInfo 

In short for PowerShell version 2:

ls -fi *.dll -r | % { $_.versioninfo } 

In short for PowerShell version 3 as suggested by tamasf:

ls *.dll -r | % versioninfo 

Answer 2

As an ugly one-liner:

Get-ChildItem -Filter *.dll -Recurse |     ForEach-Object {         try {             $_ | Add-Member NoteProperty FileVersion ($_.VersionInfo.FileVersion)             $_ | Add-Member NoteProperty AssemblyVersion (                 [Reflection.AssemblyName]::GetAssemblyName($_.FullName).Version             )         } catch {}         $_     } |     Select-Object Name,FileVersion,AssemblyVersion 

If you only want the current directory, then obviously leave out the -Recurse parameter. If you want all files instead of just DLLs, then remove the -Filter parameter and its argument. The code is (hopefully) pretty straightforward.

I'd suggest you spin off the nasty parts within the try block into separate functions since that will make error handling less awkward here.

Sample output:

Name                                    FileVersion     AssemblyVersion ----                                    -----------     --------------- Properties.Resources.Designer.cs.dll    0.0.0.0         0.0.0.0 My Project.Resources.Designer.vb.dll    0.0.0.0         0.0.0.0 WindowsFormsControlLibrary1.dll         1.0.0.0         1.0.0.0 WindowsFormsControlLibrary1.dll         1.0.0.0         1.0.0.0 WindowsFormsControlLibrary1.dll         1.0.0.0         1.0.0.0