Powershell to display Regsvr32 result in console instead of dialog - powershell

Question

I've searched but did not find any answer.
The task is register one dll using Powershell ps1, followed by other lines of scripts. I don't want to be interrupted by the dialog, so added the /s parameter. But now the result information is ignored, no matter succeed or fail.
I want the result displayed in console. But how?

Answer 1

Launch regsvr32.exe /s with Start-Process -PassThru and inspect the ExitCode property:
$regsvrp = Start-Process regsvr32.exe -ArgumentList "/s C:\path\to\your.dll" -PassThru
$regsvrp.WaitForExit(5000) # Wait (up to) 5 seconds
if($regsvrp.ExitCode -ne 0)
{
Write-Warning "regsvr32 exited with error $($regsvrp.ExitCode)"
}

Answer 2

Here is a more complete full powershell cmdlet with pipeline support.
function Register-Dll
{
<#
.SYNOPSIS
A function that uses the utility regsvr32.exe utility to register a file
.PARAMETER Path
The file path
.PARAMETER Unregister
when specified, unregisters instead of registers
#>
[CmdletBinding()]
param (
[ValidateScript({ Test-Path -Path $_ -PathType 'Leaf' })]
[Parameter(Mandatory=$true,ValueFromPipeline=$true,ValueFromPipeLineByPropertyName=$true)]
[Alias("FullName")]
[string[]]$Path,
[Alias("u")]
[switch]$Unregister
)
begin {
if ($Unregister)
{
$regflag = "-u "
}
else
{
$regflag = ""
}
[int]$NumFailed=0
$RegExitCodes = #{
0="SUCCESS";
1="FAIL_ARGS - Invalid Argument";
2="FAIL_OLE - OleInitialize Failed";
3="FAIL_LOAD - LoadLibrary Failed";
4="FAIL_ENTRY - GetProcAddress failed";
5="FAIL_REG - DllRegisterServer or DllUnregisterServer failed.";
}
}
process {
foreach ($p in $path)
{
try
{
$regsvrp = Start-Process regsvr32.exe -ArgumentList "/s $regflag <code>$p</code>" -Wait -NoNewWindow -PassThru
if($regsvrp.ExitCode -ne 0)
{
$NumFailed++
Write-Error "regsvr32 $regflag for $p exited with error $($regsvrp.ExitCode) - $($RegExitCodes[$regsvrp.ExitCode])"
}
} catch {
$NumFailed++
Write-Error $_.Exception.Message
}
}
}
end {
if ($NumFailed -gt 0)
{
if ($Unregister)
{
$mode = "unregister"
}
else
{
$mode = "register"
}
Write-Error "Failed to $mode $NumFailed dll's, see previous errors for detail"
}
}
}
Usage:
function Register-MyAppDll
{
param(
[Parameter(Mandatory=$true,ParameterSetName="Both")]
[switch]$ReRegister,
[Parameter(Mandatory=$true,ParameterSetName="UnregisterOnly")]
[Alias("u")]
[switch]$UnRegister,
[Parameter(Mandatory=$true,ParameterSetName="RegisterOnly")]
[Alias("r")]
[switch]$Register
)
$RegOptions = #()
if ($UnRegister -or $ReRegister) { $RegOptions += #{Unregister=$true} }
if ($Register -or $ReRegister) { $RegOptions += #{} }
$dlltoregister = Get-ChildItem "C:\MyApp\bin" -Filter *.dll | where {$_ -notmatch '^interop'}
foreach ($RegOpt in $RegOptions)
{
$dlltoregister | Register-Dll #RegOpt
}
}
Register-MyAppDll -UnRegister
Register-MyAppDll -Register
Register-MyAppDll -ReRegister
Enjoy :)

Answer 3

Thank you Justin! I'm using this script and it works great.
There seems to be a typo in the following line of code:
$regsvrp = Start-Process regsvr32.exe -ArgumentList "/s $regflag <code>$p</code>" -Wait -NoNewWindow -PassThru
The code tag shoudn't be there. I changed it to the following with added escaped double quotes around path to support spaces in paths:
$regsvrp = Start-Process regsvr32.exe -ArgumentList "/s $regflag `"$p`"" -Wait -NoNewWindow -PassThru