PowerShell variables and C#

Question

I'm working on Office 365 plugin in C# and trying this PowerShell command:

$newLicense = New-MsolLicenseOptions -AccountSkuId example:ENTERPRISEPACK -DisabledPlans SHAREPOINTWAC,MCOSTANDARD,SHAREPOINTENTERPRISE
Set-MsolUserLicense -UserPrincipalName [email protected] -AddLicenses "example:ENTERPRISEPACK" -LicenseOptions $newLicense

In PS, this works well. In C#, I'm having trouble to run this command. Here is my C# code, from PowerShellInvoker class:

var iss = InitialSessionState.CreateDefault();
iss.ImportPSModule(new[] { MsOnline });
iss.ThrowOnRunspaceOpenError = true;
_runspace = RunspaceFactory.CreateRunspace(iss);
_runspace.Open();
_invoker = new RunspaceInvoke(_runspace);

I've tried many ways:

scriptText_ = "$newLicense = New-MsolLicenseOptions -AccountSkuId {1} -DisabledPlans SHAREPOINTWAC,MCOSTANDARD,SHAREPOINTENTERPRISE\n"+
"Set-MsolUserLicense -UserPrincipalName [email protected] -AddLicenses \"example:ENTERPRISEPACK\" -LicenseOptions $newLicense");

I use this following method to execute other commands which works perfectly:

_invoker.Invoke(scriptText_);

And also:

var pipeline = _runspace.CreatePipeline();
pipeline.Commands.AddScript(scriptText_);
return pipeline.Invoke(); // and getting back the variable

I also tried to add the variable in the Runspace object:

_runspace.SessionStateProxy.SetVariable ("newLicense", pipeline.Invoke());

But the command do not work, and returns no error. I don't really understand the PowerShell environment (I'm a beginner in this).

Thanks in advance for all the help you can provide.

Have you tried just writing the variables to the output of the PowerShell commands and then reading the output of the Invoke? (This should help you identify if the variables are getting into the script.) — Richard
– Richard, Commented Jan 21, 2013 at 14:42
To the output of the PS commands ? May you be clearer ? I've tried to get the PSObject from the command without variable and it works. I have my "LicenseOption" object. So I tried to add it as a parameter, directly, like that: var cmd = new Command("New-MsolLicenseOptions -AccountSkuId example:ENTERPRISEPACK -DisabledPlans SHAREPOINTWAC,MCOSTANDARD,SHAREPOINTENTERPRISE", true); cmd.Parameters.Add(variableName_, variableValue_); pipeline.Commands.Add(cmd); var result = pipeline.Invoke(); and it fails. I really don't understand how C# correctly deals with variables (and parameters btw). — Nate B.
– Nate B., Commented Jan 21, 2013 at 15:31
I mean just put $myVariable in the invoked command and check the right value comes back (ie. confirm that the SetVariable is working. Debugging: when stuck either your tools are limited or you're assuming something is working when it isn't and the latter is most likely. — Richard
– Richard, Commented Jan 21, 2013 at 19:09

Keith Hill · Accepted Answer · 2013-01-21 19:32:08Z

4

I suspect you are encountering an error that the PowerShell engine isn't showing you. Try this approach instead to observe non-terminating errors:

var ps = PowerShell.Create();
ps.AddScript(@"Get-ChildItem c:\xyzzy");
var results = ps.Invoke();
if (ps.HadErrors)
{
    foreach (var errorRecord in ps.Streams.Error)
    {
        Console.WriteLine(errorRecord);
    }
}
foreach (var result in results)
{
    Console.WriteLine(result);
}

answered Jan 21, 2013 at 19:32

Keith Hill

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