Redirect stdout from loaded assembly console.writeline

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Steps to reproduce

Doubt if it’s a bug, limitation or a lack of enough knowledge: I’m loading arbitrary .NET assemblies (which I have no control of their source code) and invoke them. A lot of them are using console.writeline (or similar functions), and I want to capture it, means redirecting it to a Powershell variable or even to a file, but nothing seems to catch this - it’s just printing it to the console. Tried about million ways to overcome this unsuccessfully (> file.txt , out-string, out-variable, and so on…) here is the code:

$file = "path\to\my\compiled\assembly"
$bytes = [System.IO.File]::ReadAllBytes($file)
$assembly = [Reflection.Assembly]::Load($bytes)
$params = @(,[String[]]@("some params"))
$assembly.EntryPoint.invoke($null, $params)  # <-- I want to catch this output, into a variable or a file, but it keeps be printed to the screen.

Expected behavior

PS> $x = $assembly.EntryPoint.invoke($null, $params) | out-string
PS> $x
output

Actual behavior

PS> $x = $assembly.EntryPoint.invoke($null, $params) | out-string
PS> $x
nothing

Error details

No response

Environment data

Name                           Value                                                                                                                                                                                           
----                           -----                                                                                                                                                                                           
PSVersion                      5.1.19041.1682                                                                                                                                                                                  
PSEdition                      Desktop                                                                                                                                                                                         
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                                                                                                                                                                         
BuildVersion                   10.0.19041.1682                                                                                                                                                                                 
CLRVersion                     4.0.30319.42000                                                                                                                                                                                 
WSManStackVersion              3.0                                                                                                                                                                                             
PSRemotingProtocolVersion      2.3                                                                                                                                                                                             
SerializationVersion           1.1.0.1

Visuals

No response

[MartinGC94]

You can also set the console output to a stream like this:

$Writer = [System.IO.StreamWriter]::new("$HOME\DemoLog.txt")
$Writer.AutoFlush = $true
$OriginalOut = [System.Console]::Out
try
{
    [System.Console]::SetOut($Writer)
    [System.Console]::WriteLine("Hello")
}
finally
{
    [System.Console]::SetOut($OriginalOut)
}

[itaymigdal]

@MartinGC94 Seems like it’s working, great catch! Thank you so much 😃