Execute PowerShell Script from C with Commandline Arguments

Question

I need to execute a PowerShell script from within C   The script needs commandline arguments   This is what I have done so far   RunspaceConfiguration runspaceConfiguration   RunspaceConfiguration Create     Runspace runspace   RunspaceFactory CreateRunspace runspaceConfiguration   runspace Open     RunspaceInvoke scriptInvoker   new RunspaceInvoke runspace    Pipeline pipeline   runspace CreatePipeline    pipeline Commands Add scriptFile       Execute PowerShell script results   pipeline Invoke      scriptFile contains something like  C  Program Files MyProgram Whatever ps1     The script uses a commandline argument such as  -key Value  whereas Value can be something like a path that also might contain spaces   I don t get this to work  Does anyone know how to pass commandline arguments to a PowerShell script from within C  and make sure that spaces are no problem

User · Answer

Mine is a bit more smaller and simpler        lt summary gt      Runs a PowerShell script taking it s path and parameters       lt  summary gt       lt param name  scriptFullPath  gt The full file path for the  ps1 file  lt  param gt       lt param name  parameters  gt The parameters for the script  can be null  lt  param gt       lt returns gt The output from the PowerShell execution  lt  returns gt  public static ICollection lt PSObject gt  RunScript string scriptFullPath  ICollection lt CommandParameter gt  parameters   null        var runspace   RunspaceFactory CreateRunspace        runspace Open        var pipeline   runspace CreatePipeline        var cmd   new Command scriptFullPath       if  parameters    null                foreach  var p in parameters                        cmd Parameters Add p                       pipeline Commands Add cmd       var results   pipeline Invoke        pipeline Dispose        runspace Dispose        return results

User · Answer

I have another solution  I just want to test if executing a PowerShell script succeeds  because perhaps somebody might change the policy  As the argument  I just specify the path of the script to be executed   ProcessStartInfo startInfo   new ProcessStartInfo    startInfo FileName     powershell exe   startInfo Arguments      amp   c  Scripts test ps1    startInfo RedirectStandardOutput   true  startInfo RedirectStandardError   true  startInfo UseShellExecute   false  startInfo CreateNoWindow   true  Process process   new Process    process StartInfo   startInfo  process Start     string output   process StandardOutput ReadToEnd    Assert IsTrue output Contains  StringToBeVerifiedInAUnitTest      string errors   process StandardError ReadToEnd    Assert IsTrue string IsNullOrEmpty errors      With the contents of the script being    someVariable    StringToBeVerifiedInAUnitTest   someVariable

User · Answer

Try creating scriptfile as a separate command  Command myCommand   new Command scriptfile    then you can add parameters with CommandParameter testParam   new CommandParameter  quot key quot   quot value quot    myCommand Parameters Add testParam    and finally pipeline Commands Add myCommand     Here is the complete  edited code  RunspaceConfiguration runspaceConfiguration   RunspaceConfiguration Create     Runspace runspace   RunspaceFactory CreateRunspace runspaceConfiguration   runspace Open     Pipeline pipeline   runspace CreatePipeline       Here s how you add a new script with arguments Command myCommand   new Command scriptfile   CommandParameter testParam   new CommandParameter  quot key quot   quot value quot    myCommand Parameters Add testParam    pipeline Commands Add myCommand       Execute PowerShell script results   pipeline Invoke

User · Answer

Here is a way to add Parameters to the script if you used   pipeline Commands AddScript Script     This is with using an HashMap as paramaters the key being the name of the variable in the script and the value is the value of the variable   pipeline Commands AddScript script    FillVariables pipeline  scriptParameter   Collection lt PSObject gt  results   pipeline Invoke      And the fill variable method is   private static void FillVariables Pipeline pipeline  Hashtable scriptParameters         Add additional variables to PowerShell   if  scriptParameters    null          foreach  DictionaryEntry entry in scriptParameters              CommandParameter Param   new CommandParameter entry Key as String  entry Value         pipeline Commands 0  Parameters Add Param                 this way you can easily add multiple parameters to a script  I ve also noticed that if you want to get a value from a variable in you script like so   Object resultcollection   runspace SessionStateProxy GetVariable  results        results being the name of the v  you ll have to do it the way I showed because for some reason if you do it the way Kosi2801 suggests the script variables list doesn t get filled with your own variables

User · Answer

You can also just use the pipeline with the AddScript Method   string cmdArg      script ps1 -foo bar              Collection lt PSObject gt  psresults  using  Pipeline pipeline    runspace CreatePipeline                                  pipeline Commands AddScript cmdArg                   pipeline Commands 0  MergeMyResults PipelineResultTypes Error  PipelineResultTypes Output                   psresults   pipeline Invoke                  return psresults    It will take a string  and whatever parameters you pass it

User · Answer

I had trouble passing parameters to the Commands AddScript method   C  Foo1 PS1 Hello World Hunger C  Foo2 PS1 Hello World  scriptFile    C  Foo1 PS1   parameters    parm1 parm2 parm3      variable length of params   I Resolved this by passing null as the name and the param as value into a collection of CommandParameters  Here is my function   private static void RunPowershellScript string scriptFile  string scriptParameters        RunspaceConfiguration runspaceConfiguration   RunspaceConfiguration Create        Runspace runspace   RunspaceFactory CreateRunspace runspaceConfiguration       runspace Open        RunspaceInvoke scriptInvoker   new RunspaceInvoke runspace       Pipeline pipeline   runspace CreatePipeline        Command scriptCommand   new Command scriptFile       Collection lt CommandParameter gt  commandParameters   new Collection lt CommandParameter gt         foreach  string scriptParameter in scriptParameters Split                     CommandParameter commandParm   new CommandParameter null  scriptParameter           commandParameters Add commandParm           scriptCommand Parameters Add commandParm             pipeline Commands Add scriptCommand       Collection lt PSObject gt  psObjects      psObjects   pipeline Invoke

User · Answer

For me  the most flexible way to run PowerShell script from C  was using PowerShell Create   AddScript    The snippet of the code is  string scriptDirectory   Path GetDirectoryName      ConfigurationManager AppSettings  PathToTechOpsTooling      var script            Set-Location     scriptDirectory   Environment NewLine        Import-Module    script psd1    Environment NewLine         data   Import-Csv -Path     tempCsvFile     -Encoding UTF8             Environment NewLine        New-Registration -server     dbServer     -DBName     dbName             -Username       user Username         -Users  userData     powershell   PowerShell Create   AddScript script    powershell Invoke lt User gt     foreach  var errorRecord in  powershell Streams Error      Console WriteLine errorRecord     You can check if there s any error by checking Streams Error  It was really handy to check the collection  User is the type of object the PowerShell script returns

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