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C# - Utilize Quest active directory cmdlets for Powershell by calling PS script

C# code (Source):
private string RunScript(string scriptText)
{
// create Powershell runspace
Runspace runspace = RunspaceFactory.CreateRunspace();
// open it
runspace.Open();
// create a pipeline and feed it the script text
Pipeline pipeline = runspace.CreatePipeline();
pipeline.Commands.AddScript(scriptText);
// add an extra command to transform the script
// output objects into nicely formatted strings
// remove this line to get the actual objects
// that the script returns. For example, the script
// "Get-Process" returns a collection
// of System.Diagnostics.Process instances.
pipeline.Commands.Add("Out-String");
// execute the script
Collection<psobject /> results = pipeline.Invoke();
// close the runspace
runspace.Close();
// convert the script result into a single string
StringBuilder stringBuilder = new StringBuilder();
foreach (PSObject obj in results)
{
stringBuilder.AppendLine(obj.ToString());
}
return stringBuilder.ToString();
}
Powershell code
#Dummy code for example purpose
ASNP Quest*
#Example of cmdlet I want to use
$Users = Get-QADGroupMember -Identity $Group -Enabled
return $Users.count
As you can see, my goal is to call the script utilizing RunScript above in a Button_Click event in my WPF app. I've been able to correctly call the script but the call to Quest cmdlets clearly doesn't go trough as wanted since I would receive 0 in the above example.
TL;DR
Script is running correctly but calls to Quest cmdlets don't work since it return nothing (or 0 in the above example). Is there something I'm missing ?
EDIT
Important to note that the exact same script ran in Powershell returns the correct values. Calling it from C# don't.

Run Powershell from C#

I need to start a powershell script from C# and get the PSSSecurityException on pipeline.Invoke()
AuthorizationManager check failed.
My code:
RunspaceConfiguration runspaceConfiguration = RunspaceConfiguration.Create();
using (Runspace runspace = RunspaceFactory.CreateRunspace(runspaceConfiguration))
{
runspace.Open();
Pipeline pipeline = runspace.CreatePipeline();
Command scriptCommand = new Command(scriptfile);
pipeline.Commands.Add(scriptCommand);
pipeline.Invoke();
}
Questions
I suspect that I need to set PSCredential. But I can not promt for it, so I have to handle this in code. Can this be done in a secure way? (This was not the case)

Check out this SuperUser post: https://superuser.com/questions/106360/how-to-enable-execution-of-powershell-scripts
You probably just need to allow unsigned scripts to run. In the PS console, type the following:
set-executionpolicy remotesigned
Another resource echoes this: http://tgnp.me/2011/09/powershell-authorizationmanager-check-failed-resolution/
Give that a try and let me know what happens.
To capture the output from the script, try this:
Collection output = pipeline.Invoke();
foreach (PSObject psObject in output)
{
<here you can ToString the psObject for the output and write it line by line to your log>
}

The problem was that the script was placed on a share. To run scripts on this share I needed to add the share to Trusted Sites.

Adding a Batch/Powershell file to a compilation (Build) C# Powershell

I'm working on a c# project where i'm trying to run powershell scripts, output them to a CSV and read the CSV and output it to a Checked list box.
I've added a powershell file as a resource with Build Action 'Compile' and Copy to output directory 'Do Not Copy'.
The basic content of the file is :
Get-CimInstance -Query "SELECT * from Win32_Service where name LIKE 'sql%'" | select Name, State , StartMode | convertto-csv > proctest.csv
i try to access this file using this string
string ps_path = System.IO.Path.GetDirectoryName(System.Windows.Forms.Application.ExecutablePath) + "\\GetSvc.ps1";
The PS code i use is
RunspaceConfiguration runspaceconfiguration = RunspaceConfiguration.Create();
Runspace runspace = RunspaceFactory.CreateRunspace(runspaceconfiguration);
runspace.Open();
RunspaceInvoke scriptInvoker = new RunspaceInvoke(runspace);
Pipeline pipeline = runspace.CreatePipeline();
Command mycommand = new Command(ps_path);
pipeline.Commands.Add(mycommand);
pipeline.Invoke();
runspace.Close();
This works fine during compilation but when i build an exe and try to run it, i get an error saying the GetSvc.ps1 file is not found.
How do i make the file a part of the build ?!

Make the build action for the script be Embedded Resource. Then take a look at lines 149-155 on how to extract the script inside the C# exe. In this example, I had zipped the script to compact it. If you skip that step then you can remove line 152 and in line 153 use stream instead of gZipStream.

Powershell command through C# code

I want to add through C# code Powershell command or script (what is correct?) variable declaration with default value stored in C# variable.
For example, in Powershell I typing following line
$user = 'Admin'
I want to add this line in C# code.
powershell.AddScript(String.Format("$user = \"{0}\"", userName));
or
powershell.AddCommand(String.Format("$user = \"{0}\"", userName));
I try with AddCommand() but it throws exception. I use PS 2.0.

According to this article How to run PowerShell scripts from C#, you will need something like this:
// create Powershell runspace
Runspace runspace = RunspaceFactory.CreateRunspace();
// open it
runspace.Open();
Pipeline pipeline = runspace.CreatePipeline();
pipeline.Commands.AddScript(String.Format("$user = \"{0}\"", userName));
pipeline.Commands.AddScript("#your main script");
// execute the script
Collection<psobject> results = pipeline.Invoke();
// close the runspace
runspace.Close();
Also see Run Powershell-Script from C# Application question here on Stackoverflow.

Cannot invoke this function because the current host does not implement it c#

i know this is on this board, but im new, and nothing has really halped me, so i am hoping someone can provide some insight. i get the following error:
Cannot invoke this function because the current host does not implement it
here is my code
public static void runPowershellScript(string scriptName)
{
RunspaceConfiguration runspaceConfiguration = RunspaceConfiguration.Create();
Runspace runspace = RunspaceFactory.CreateRunspace(runspaceConfiguration);
runspace.Open();
RunspaceInvoke scriptInvoker = new RunspaceInvoke(runspace);
scriptInvoker.Invoke("Set-ExecutionPolicy Unrestricted");
Pipeline pipeline = runspace.CreatePipeline();
pipeline.Commands.Add(scriptName);
pipeline.Invoke();
}
the variable i pass through is my script name, it doesnt have a problem.

You're probably using some functions which are host-specific, meaning that any process which hosts the PowerShell engine (e.g. the powershell.exe, powershell_ise.exe, your c# app) has to provide implementations for them.
In general, these would include the *-host functions (write-host, out-host, read-host), the transcript functions (start-transcript, stop-transcript), and some others.