Passing variables to powershell from C# : Output file location variables

Question

I have recently began using C# to invoke powershell scripts, with some success :)

$spWeb = Get-SPWeb -Identity http://127.0.0.1 
$listTemplate = [Microsoft.SharePoint.SPListTemplateType]::DocumentLibrary 
$spWeb.Lists.Add($args, "", $listTemplate) > $myDirectory

$spWeb.Lists.Add returns a SharePoint GUID.

Question:

I simply wish to pass in the directory/filename in which the GUID will be written. How could that be done?

I have posted on the MSDN forums here: https://learn.microsoft.com/en-us/answers/ but have continued my search on stackoverflow due to a seemingly dead end thread. This post is a cumulative gathering of the information found through MSDN responses.

Angshuman Agarwal · Accepted Answer · 2012-06-13 08:50:54Z

1

You can try using the Set-Content cmdlet instead, like this. You need to pass the $myFile as a string and Set-Content will do the rest for you -

Inside your script i.e. MyScript.ps1 here, you will have this piece of code -

param([string]$parameter, [string]$myFile)
try
{
    $spWeb = Get-SPWeb -Identity http://127.0.0.1 
    $listTemplate = [Microsoft.SharePoint.SPListTemplateType]::DocumentLibrary 
    $guid = $spWeb.Lists.Add($parameter, "", $listTemplate)
    $guid | Set-Content $myFile
}
catch
{
    throw ("Failed. The error was: '{0}'." -f $_ )
}

How to Run: Open Powershell Prompt and type this

.\MyScript.ps1 "someparam1" "D:\Output.txt"

C# Bit -

private PowerShell _ps;
_ps = PowerShell.Create();

var parameter = new List<string>
                                {
                                    parameter,
                                    myFile
                                };

var sr = new StreamReader(@"C:\MyScript.ps1");
_ps.AddScript(sr.ReadToEnd()).AddParameters(parameter);
_ps.Invoke();

edited Jun 13, 2012 at 8:50

answered Jun 12, 2012 at 15:36

Angshuman Agarwal

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8 Comments

mherr Over a year ago

Thank you for your response. I am unfamiliar with powershell script, so perhaps you can tell me what I am doing wrong: $spWeb = Get-SPWeb -Identity 127.0.0.1 $listTemplate = [Microsoft.SharePoint.SPListTemplateType]::DocumentLibrary param([string]$args, [string]$myFile) try { MyFunction | %{$_ $spWeb.Lists.Add($args, "", $listTemplate)} | Set-Content $myFile } catch {throw ("Failed. The error was: '{0}'." -f $_ ) } the $spWeb.List.Add part is actually what returns a sharepoint GUID, The error message I get is: Unexpected token 'spWeb' in expression or statement.

mherr Over a year ago

Well, it turns out that comments to comments aren't very format friendly.

Angshuman Agarwal Over a year ago

The way you are using the Syntaxes and parameters of Powershell are entirely wrong I can see. What is _MyFunction_ doing ? Where is it defined ? Try running your code line by line. The way you are calling DocumentLibrary function is wrong. Sorry, its just not correct. The question what you have asked is about redirectoring the output from a function to a file and you want to pass that filename from C#. But, I do not see anything like that here ? Can you please explain what are you trying to achieve here ? Then only I will be in a position to help you

mherr Over a year ago

My apologies for such an incorrect comment. Allow me to back up.

$spWeb = Get-SPWeb -Identity http://127.0.0.1 $listTemplate = [Microsoft.SharePoint.SPListTemplateType]::DocumentLibrary $spWeb.Lists.Add($args, "", $listTemplate) > $myFile

mherr Over a year ago

My apologies for such an incorrect comment. Allow me to back up.

$spWeb = Get-SPWeb -Identity http://127.0.0.1 $listTemplate = [Microsoft.SharePoint.SPListTemplateType]::DocumentLibrary $spWeb.Lists.Add($args, "", $listTemplate) > $myDirectory

$spWeb.Lists.Add returns a SharePoint GUID. I simply wish to pass in the directory/filename in which the GUID will be written. In the original post, the way I am passing in the parameters works for $args, but not for $myDirectory. I am very new to powershell, so feel free to not respond if this is a waste of time, but thank you for your attempt.

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