CODEWITHSUNDEEP
powershellpowershell-5.0
Sam
Sam

Reputation: 1834

Unable to call dotnet methods from powershell

I'm trying to call the Start method of a System.Diagnostics.Process. I've seen many other examples on the internet doing that exact same however when I run my code:

$process = new-object System.Diagnostics.Process

$config.variables.properties | foreach {
  $process.StartInfo.EnvironmentVariables.Set_Item($_.name, $_.value)
}

$process.StartInfo.UseShellExecute = false;
$process.StartInfo.FileName = "C:\Program Files\IIS Express\iisexpress.exe"
$process.StartInfo.Arguments = "/config:$configPath\${name}ApplicationHost.config \site:$name"

$process.Start()

I get this meaningless error:

Exception calling "Start" with "0" argument(s): "The parameter is incorrect"
At C:\Users\critc\Source\run-iisexpress.ps1:67 char:1
+ $started = $process.Start() | Out-Null
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : Win32Exception

This method has a 0 parameter overload. Infact if I drop the parentheses from the call powershell in it's infinite wisdom tells me theres a zero parameter overload

OverloadDefinitions
-------------------
bool Start()

Powershell is trolling me! Originally I was creating a ProcessStartInfo instance and trying to pass it to the static Process.Start method and I was getting the same error (except it said with "1" argument(s))

UPDATE

Heres my updated code that works.

$process = new-object System.Diagnostics.Process

Get-Member -inputObject $config.variables -memberType Properties | foreach {
  $value = $config.variables | select -exp $_.name
  $process.StartInfo.EnvironmentVariables.Set_Item($_.name, $value)
}

$process.StartInfo.UseShellExecute = $false
$process.StartInfo.FileName = "C:\Program Files\IIS Express\iisexpress.exe"
$process.StartInfo.Arguments = "/config:`"$configPath\${name}ApplicationHost.config`" /site:$name"

$started = $process.Start()
if ($started) {
  $process.WaitForExit()
}

Upvotes: 1

Views: 550

Answers (1)

Kory Gill
Kory Gill

Reputation: 7153

Something tells me your parameters are incorrect, and you have a space in $configPath. But that is just a hunch... It would be better if you supplied values of $configPath and $name in your question.

What happens if you use:

$process.StartInfo.Arguments = "/config:`"$configPath\${name}ApplicationHost.config`" /site:`"$name`""

Upvotes: 1

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