CODEWITHSUNDEEP
c#windowsformswinformspowershell
alex
alex

Reputation: 65

Run Powershellscript in C#

I am trying to run a PowerShell script via C# in a Windows Form.

The problem is that I have two enums, and I can't get them in the code right:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Collections.ObjectModel;
using System.Management.Automation;
using System.Management.Automation.Runspaces;

namespace WindowsFormsApp6
{
    static class Program
    {
        /// <summary>
        /// Der Haupteinstiegspunkt für die Anwendung.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }   *here
}

Just so I understand, do I have to add the following under the static void? (at *here):

 using (PowerShell PowerShellInstance = PowerShell.Create())
 {
 }

Then, do I copy paste it in there?

But of course it's not that easy; I Google'd it, but I don't understand what I have to do to get it working...

Enum RandomFood
{#Add Food here:
Pizza
Quesedias
Lasagne
Pasta
Ravioli
}

Enum Meat
{#Add Food here:
Steak
Beaf
Chicken
Cordonbleu
}

function Food {

Clear-Host
  $Foods =  [Enum]::GetValues([RandomFood]) | Get-Random -Count 6
  $Foods += [Enum]::GetValues([Meat]) | Get-Random -Count 1

$foodsOfWeek = $Foods | Get-Random -Count 7
Write-Host `n "Here is you'r List of Meals for this week :D" `n
foreach ($day in [Enum]::GetValues([DayOfWeek])) {
    ([string]$day).Substring(0, 3) + ': ' + $foodsOfWeek[[DayOfWeek]::$day]
}
}

In the end, I would like to be able to just press on a button on the form, and then have it run the script which outputs it to a textbox.

Is that even possible?

Thanks for any help!

Upvotes: 3

Views: 746

Answers (1)

srbrills
srbrills

Reputation: 1557

You could place your PowerShell script into a separate file and call it on a bound event.

// When a button is clicked...
private void Button_Click(object sender, EventArgs e)
{
    // Create a PS instance...
    using (PowerShell instance = PowerShell.Create())
    {
        // And using information about my script...
        var scriptPath = "C:\\myScriptFile.ps1";
        var myScript = System.IO.File.ReadAllText(scriptPath);
        instance.AddScript(myScript);
        instance.AddParameter("param1", "The value for param1, which in this case is a string.");

        // Run the script.
        var output = instance.Invoke();

        // If there are any errors, throw them and stop.
        if (instance.Streams.Error.Count > 0)
        {
            throw new System.Exception($"There was an error running the script: {instance.Streams.Error[0]}");
        }

        // Parse the output (which is usually a collection of PSObject items).
        foreach (var item in output)
        {
            Console.WriteLine(item.ToString());
        }
    }
}

In this example, you would probably make better use of the passed in event arguments, and perform some better error handling and output logging, but this should get you down the right path.

Note that running your current script as-is will only declare your Food function, but won't actually run it. Make sure there is a function invocation in your script or C# code.

Upvotes: 2

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