Start-Process给出了错误

Question

Here's the code

$tool =  "E:\Experiments\Popup\latest\xperf.exe"
$toolOutput =  "XPerfOutput.log"
$toolError = "XPerfError.log"
$command = "-stop"


$x = Start-Process -FilePath $tool -ArgumentList $command -RedirectStandardOutput $toolOutput -RedirectStandardError $toolError -WindowStyle Hidden -PassThru -Wait  

And Here's there error:

Start-Process : Parameter set cannot be resolved using the specified named parameters. At E:\Experiments\Popup\asd.ps1:9 char:1
+ Start-Process -FilePath $tool -ArgumentList $command -RedirectStandardOutput $toolOutput RedirectStandardError $toolError -WindowStyle Hidden
-PassThru -Wait
+ ~~~~~~~~~~~~~
+ CategoryInfo          : InvalidArgument: (:) [Start-Process], ParameterBindingException
+ FullyQualifiedErrorId : AmbiguousParameterSet,Microsoft.PowerShell.Commands.StartProcessCommand

I want to run the process in a hidden window, wait for it to return and get the error, output and exit code.

Answer 1

According to the documentation for Start-Process , the combination of the redirection parameters (RedirectStandardOutput and RedirectStandardError) and the WindowStyle parameter is invalid since they exist in separate parameter sets .

This means that they cannot be used together. This is why you're receiving that particular error.